Re: Message in my Linux guest
Is your email signature supposed to be (missing an r?): [EMAIL PROTECTED] Regards, Kevin -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Martin, Terry R. (CMS/CTR) (CTR) Sent: Monday, July 28, 2008 6:52 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: Message in my Linux guest Thanks! Thank You, Terry Martin Lockheed Martin - Information Technology z/OS z/VM Systems - Performance and Tuning Cell - 443 632-4191 Work - 410 786-0386 [EMAIL PROTECTED] -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Shawn Wells Sent: Monday, July 28, 2008 5:31 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: Message in my Linux guest Martin, Terry R. (CMS/CTR) (CTR) wrote: Hi From the output out of my Linux guest can does this look like a MEMORY problem or not enough SWAP problem? I highlighted in RED two of the statements. Since I am rather new at all of this I am not sure what to make of this. Hi Terry, My guess is out of memory. Details: Jul 27 23:32:57 e49l021v kernel: oom-killer: gfp_mask=0x1d2 It is the job of the linux 'oom killer' to sacrifice one or more processes in order to free up memory for the system when all else fails. It will also kill any process sharing the same mm_struct as the selected process, for obvious reasons. Any particular process leader may be immunized against the oom killer if the value of it's /proc/pid/oomadj is set to the constant OOM_DISABLE. Reference http://linux-mm.org/OOM_Killer, it shows you both the process and sections of code. Without seeing the output of top or vmstat, my guess is that you have an application that is sucking up ALL resources on your system. The kernel is essentially protecting itself by killing that process, and issuing the error messages. This is backed up by messages in your output: Jul 27 23:33:00 e49l021v kernel: Normal: empty Jul 27 23:33:00 e49l021v kernel: HighMem: empty Jul 27 23:33:00 e49l021v kernel: Swap cache: add 184153, delete 184157 ,find 56852/73080, race 0+5 Jul 27 23:33:00 e49l021v kernel: Free swap:0kB fdbk=9 msgid=APSM011E stext=License file will expire in 9 day(s), 08-06-2008 HALT . Also, looks like you guys might want to look into licensing whatever this is ;) -- Shawn D. Wells Global Solutions Architect Lead, Linux on System z -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
NFS server and mapping UID/GID from z/OS USS
Hi there is there an easy way to map USS UID/GID from z/OS USS to Linux accross an NFS mount point ? In older versions of NFS there was a map_static=map.file parameter where you could build your own static mapping table, but in NFSv4 it seems to have gone. We dont have a common LDAP or NIIS server for both systems at this point. Any help greatly appreciated. John Randles email: [EMAIL PROTECTED] American Express made the following annotations on Tue Jul 29 2008 09:15:18 -- This message and any attachments are solely for the intended recipient and may contain confidential or privileged information. If you are not the intended recipient, any disclosure, copying, use, or distribution of the information included in this message and any attachments is prohibited. If you have received this communication in error, please notify us by reply e-mail and immediately and permanently delete this message and any attachments. Thank you. American Express a ajouté le commentaire suivant le Tue Jul 29 2008 09:15:18 Ce courrier et toute pièce jointe qu'il contient sont réservés au seul destinataire indiqué et peuvent renfermer des renseignements confidentiels et privilégiés. Si vous n'êtes pas le destinataire prévu, toute divulgation, duplication, utilisation ou distribution du courrier ou de toute pièce jointe est interdite. Si vous avez reçu cette communication par erreur, veuillez nous en aviser par courrier et détruire immédiatement le courrier et les pièces jointes. Merci. ** --- -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
How to increase swap V-disk sizes
I have a SLES10 server that is running a java app using tomcat5 and is hitting out of memory conditions. I bumped up the virtual storage in the VM directory and found the out of memory problem went away. Now I want to bump the virtual storage back down but instead increase the size of the V-disks being used for SWAP. I saw that this server had 4 V-DISK MDISK statements. I increased each of the 4 minidisks from 20 blks to 60 blks: MDISK 0293 FB-512 V-DISK 60 MR LINUX SWAPAREA DASDDA MDISK 050D FB-512 V-DISK 60 MR LINUX SWAPAREA DASDDA MDISK 050C FB-512 V-DISK 60 MR LINUX SWAPAREA DASDDA MDISK 050B FB-512 V-DISK 60 MR LINUX SWAPAREA DASDDA I also found the swap disks get formatted in the PROFILE EXEC: For example: queue '1' queue 'LXSWAP' 'FORMAT 293 E ( BLK 512 ' if rc 0 then exit rc I rebooted the server (test server that I can reboot as needed). cat /proc/dasd/devices does show the size increase For example: 0.0.050b(FBA ) at ( 94: 228) is dasdbf : active at blocksize: 512, 60 blocks, 292 MB What do I need to do on the SLES10 server to get it to use the V-DISK's for swap and is there a command to query swap in use? Ann Smith Mainframe Systems Support -zVM and zLinux Support Integrated Technology Delivery IBM Global Service Integrated Operations At The Hartford Work phone: 860-547-6110 Pager: 800-204-6367 Email: mailto:[EMAIL PROTECTED] * This communication, including attachments, is for the exclusive use of addressee and may contain proprietary, confidential and/or privileged information. If you are not the intended recipient, any use, copying, disclosure, dissemination or distribution is strictly prohibited. If you are not the intended recipient, please notify the sender immediately by return e-mail, delete this communication and destroy all copies. * -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: How to increase swap V-disk sizes
What about free -m -- does it show swapped being used? I've only used swapon -s to see what devices are there and their priority... So I'm not sure of the accuracy of that 'Used' number -- would just want to compare with free -m results... Scott On Tue, Jul 29, 2008 at 3:47 PM, Smith, Ann (ISD, IT) [EMAIL PROTECTED] wrote: Response from swapon -s swapon -s FilenameTypeSizeUsed Priority /dev/dasdb1 partition 297492 0 42 /dev/dasdbh1partition 297492 0 42 /dev/dasdbg1partition 297492 0 42 /dev/dasdbf1partition 297492 0 42 I'm a bit concerned that Used shows 0. The size looks good. Bottom line is I increased the swap disks substantially so that I could decrease the virtual storage (from 512M down to 128M). But according to the tomcat logs the out of memory problem is back. -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Scott Rohling Sent: Tuesday, July 29, 2008 5:36 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: How to increase swap V-disk sizes Then there's nothing you should need to do but restart the server.. see my previous post if you're trying to do it dynamically without restarting.. Do the swapon -s to determine what swap disks are being used.. Scott On Tue, Jul 29, 2008 at 3:33 PM, Smith, Ann (ISD, IT) [EMAIL PROTECTED] wrote: Yes. I think the server had swap disks. I just want to increase the size of the V-disks. I increased them as far as VM is concerned. -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Scott Rohling Sent: Tuesday, July 29, 2008 5:28 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: How to increase swap V-disk sizes A little confused because you seem to be indicating the swap disks are used, but are asking how to get Linux to use them? Anyway -- your swap disks are probably defined in /etc/fstab - so check there to ensure they are all mounted as swap. If you've added any disks, add the appropriate line to the fstab. To see what's in use: swapon -s Hope that helps.. Scott Rohling On Tue, Jul 29, 2008 at 3:19 PM, Smith, Ann (ISD, IT) [EMAIL PROTECTED] wrote: I have a SLES10 server that is running a java app using tomcat5 and is hitting out of memory conditions. I bumped up the virtual storage in the VM directory and found the out of memory problem went away. Now I want to bump the virtual storage back down but instead increase the size of the V-disks being used for SWAP. I saw that this server had 4 V-DISK MDISK statements. I increased each of the 4 minidisks from 20 blks to 60 blks: MDISK 0293 FB-512 V-DISK 60 MR LINUX SWAPAREA DASDDA MDISK 050D FB-512 V-DISK 60 MR LINUX SWAPAREA DASDDA MDISK 050C FB-512 V-DISK 60 MR LINUX SWAPAREA DASDDA MDISK 050B FB-512 V-DISK 60 MR LINUX SWAPAREA DASDDA I also found the swap disks get formatted in the PROFILE EXEC: For example: queue '1' queue 'LXSWAP' 'FORMAT 293 E ( BLK 512 ' if rc 0 then exit rc I rebooted the server (test server that I can reboot as needed). cat /proc/dasd/devices does show the size increase For example: 0.0.050b(FBA ) at ( 94: 228) is dasdbf : active at blocksize: 512, 60 blocks, 292 MB What do I need to do on the SLES10 server to get it to use the V-DISK's for swap and is there a command to query swap in use? Ann Smith Mainframe Systems Support -zVM and zLinux Support Integrated Technology Delivery IBM Global Service Integrated Operations At The Hartford Work phone: 860-547-6110 Pager: 800-204-6367 Email: mailto:[EMAIL PROTECTED] ** *** This communication, including attachments, is for the exclusive use of addressee and may contain proprietary, confidential and/or privileged information. If you are not the intended recipient, any use, copying, disclosure, dissemination or distribution is strictly prohibited. If you are not the intended recipient, please notify the sender immediately by return e-mail, delete this communication and destroy all copies. ** *** -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the
Re: How to increase swap V-disk sizes
free -m total used free sharedbuffers cached Mem: 493486 6 0 30 83 -/+ buffers/cache:373119 Swap: 1162 0 1162 So 'free -m' seems to show the size increase took effect. But again 0 used. -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Scott Rohling Sent: Tuesday, July 29, 2008 5:55 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: How to increase swap V-disk sizes What about free -m -- does it show swapped being used? I've only used swapon -s to see what devices are there and their priority... So I'm not sure of the accuracy of that 'Used' number -- would just want to compare with free -m results... Scott On Tue, Jul 29, 2008 at 3:47 PM, Smith, Ann (ISD, IT) [EMAIL PROTECTED] wrote: Response from swapon -s swapon -s FilenameTypeSizeUsed Priority /dev/dasdb1 partition 297492 0 42 /dev/dasdbh1partition 297492 0 42 /dev/dasdbg1partition 297492 0 42 /dev/dasdbf1partition 297492 0 42 I'm a bit concerned that Used shows 0. The size looks good. Bottom line is I increased the swap disks substantially so that I could decrease the virtual storage (from 512M down to 128M). But according to the tomcat logs the out of memory problem is back. -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Scott Rohling Sent: Tuesday, July 29, 2008 5:36 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: How to increase swap V-disk sizes Then there's nothing you should need to do but restart the server.. see my previous post if you're trying to do it dynamically without restarting.. Do the swapon -s to determine what swap disks are being used.. Scott On Tue, Jul 29, 2008 at 3:33 PM, Smith, Ann (ISD, IT) [EMAIL PROTECTED] wrote: Yes. I think the server had swap disks. I just want to increase the size of the V-disks. I increased them as far as VM is concerned. -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Scott Rohling Sent: Tuesday, July 29, 2008 5:28 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: How to increase swap V-disk sizes A little confused because you seem to be indicating the swap disks are used, but are asking how to get Linux to use them? Anyway -- your swap disks are probably defined in /etc/fstab - so check there to ensure they are all mounted as swap. If you've added any disks, add the appropriate line to the fstab. To see what's in use: swapon -s Hope that helps.. Scott Rohling On Tue, Jul 29, 2008 at 3:19 PM, Smith, Ann (ISD, IT) [EMAIL PROTECTED] wrote: I have a SLES10 server that is running a java app using tomcat5 and is hitting out of memory conditions. I bumped up the virtual storage in the VM directory and found the out of memory problem went away. Now I want to bump the virtual storage back down but instead increase the size of the V-disks being used for SWAP. I saw that this server had 4 V-DISK MDISK statements. I increased each of the 4 minidisks from 20 blks to 60 blks: MDISK 0293 FB-512 V-DISK 60 MR LINUX SWAPAREA DASDDA MDISK 050D FB-512 V-DISK 60 MR LINUX SWAPAREA DASDDA MDISK 050C FB-512 V-DISK 60 MR LINUX SWAPAREA DASDDA MDISK 050B FB-512 V-DISK 60 MR LINUX SWAPAREA DASDDA I also found the swap disks get formatted in the PROFILE EXEC: For example: queue '1' queue 'LXSWAP' 'FORMAT 293 E ( BLK 512 ' if rc 0 then exit rc I rebooted the server (test server that I can reboot as needed). cat /proc/dasd/devices does show the size increase For example: 0.0.050b(FBA ) at ( 94: 228) is dasdbf : active at blocksize: 512, 60 blocks, 292 MB What do I need to do on the SLES10 server to get it to use the V-DISK's for swap and is there a command to query swap in use? Ann Smith Mainframe Systems Support -zVM and zLinux Support Integrated Technology Delivery IBM Global Service Integrated Operations At The Hartford Work phone: 860-547-6110 Pager: 800-204-6367 Email: mailto:[EMAIL PROTECTED] ** ** ** *** This communication, including attachments, is for the exclusive use of addressee and may contain proprietary, confidential and/or privileged information. If you are not the intended recipient, any use, copying, disclosure, dissemination or distribution is strictly prohibited. If you are not the intended recipient, please notify the sender immediately by return e-mail, delete this communication and destroy all
Re: How to increase swap V-disk sizes
hmm.. I just tried this on my Linux workstation and the numbers are pretty close between free -m and swapon -s. Could it be that something is attempting to load into memory that can't be swapped out and really needs more than 128M?Maybe try 256M and see how it goes? Others here probably have more knowledge of Linux memory management and what conditions are going to result in an out of memory w/o hitting swap... Scott On Tue, Jul 29, 2008 at 3:54 PM, Scott Rohling [EMAIL PROTECTED]wrote: What about free -m -- does it show swapped being used? I've only used swapon -s to see what devices are there and their priority... So I'm not sure of the accuracy of that 'Used' number -- would just want to compare with free -m results... Scott On Tue, Jul 29, 2008 at 3:47 PM, Smith, Ann (ISD, IT) [EMAIL PROTECTED] wrote: Response from swapon -s swapon -s FilenameTypeSizeUsed Priority /dev/dasdb1 partition 297492 0 42 /dev/dasdbh1partition 297492 0 42 /dev/dasdbg1partition 297492 0 42 /dev/dasdbf1partition 297492 0 42 I'm a bit concerned that Used shows 0. The size looks good. Bottom line is I increased the swap disks substantially so that I could decrease the virtual storage (from 512M down to 128M). But according to the tomcat logs the out of memory problem is back. -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Scott Rohling Sent: Tuesday, July 29, 2008 5:36 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: How to increase swap V-disk sizes Then there's nothing you should need to do but restart the server.. see my previous post if you're trying to do it dynamically without restarting.. Do the swapon -s to determine what swap disks are being used.. Scott On Tue, Jul 29, 2008 at 3:33 PM, Smith, Ann (ISD, IT) [EMAIL PROTECTED] wrote: Yes. I think the server had swap disks. I just want to increase the size of the V-disks. I increased them as far as VM is concerned. -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Scott Rohling Sent: Tuesday, July 29, 2008 5:28 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: How to increase swap V-disk sizes A little confused because you seem to be indicating the swap disks are used, but are asking how to get Linux to use them? Anyway -- your swap disks are probably defined in /etc/fstab - so check there to ensure they are all mounted as swap. If you've added any disks, add the appropriate line to the fstab. To see what's in use: swapon -s Hope that helps.. Scott Rohling On Tue, Jul 29, 2008 at 3:19 PM, Smith, Ann (ISD, IT) [EMAIL PROTECTED] wrote: I have a SLES10 server that is running a java app using tomcat5 and is hitting out of memory conditions. I bumped up the virtual storage in the VM directory and found the out of memory problem went away. Now I want to bump the virtual storage back down but instead increase the size of the V-disks being used for SWAP. I saw that this server had 4 V-DISK MDISK statements. I increased each of the 4 minidisks from 20 blks to 60 blks: MDISK 0293 FB-512 V-DISK 60 MR LINUX SWAPAREA DASDDA MDISK 050D FB-512 V-DISK 60 MR LINUX SWAPAREA DASDDA MDISK 050C FB-512 V-DISK 60 MR LINUX SWAPAREA DASDDA MDISK 050B FB-512 V-DISK 60 MR LINUX SWAPAREA DASDDA I also found the swap disks get formatted in the PROFILE EXEC: For example: queue '1' queue 'LXSWAP' 'FORMAT 293 E ( BLK 512 ' if rc 0 then exit rc I rebooted the server (test server that I can reboot as needed). cat /proc/dasd/devices does show the size increase For example: 0.0.050b(FBA ) at ( 94: 228) is dasdbf : active at blocksize: 512, 60 blocks, 292 MB What do I need to do on the SLES10 server to get it to use the V-DISK's for swap and is there a command to query swap in use? Ann Smith Mainframe Systems Support -zVM and zLinux Support Integrated Technology Delivery IBM Global Service Integrated Operations At The Hartford Work phone: 860-547-6110 Pager: 800-204-6367 Email: mailto:[EMAIL PROTECTED] ** *** This communication, including attachments, is for the exclusive use of addressee and may contain proprietary, confidential and/or privileged information. If you are not the intended recipient, any use, copying, disclosure, dissemination or distribution is strictly prohibited. If you are not the intended recipient, please notify the sender immediately by return e-mail, delete this communication and destroy all copies.
Re: How to increase swap V-disk sizes
I am going to bump it's storage back up before I go home. Interestingly enough - although I see swap being used on other servers I do not see it used on the servers running this particular application. But I was using vmstat while the customer created the problem and I swear I saw swapping. I'll try again tomorrow. At least the problem is easily created. The problem occurs when a customer tries to convert a large report over on the zOS side to an EXCEL spreadsheet which gets saved on their PC. The vendor product runs on zOS and the thin client is running on linux. Smaller reports can be converted to EXCEL successfully and saved to the PC. When successful they receive a Windows prompt to save the file to disk or open it. The good news is with SLES10 and tomcat5 the customer whose download fails no longer hangs up tomcat. Thank you for your help. This is driving me crazy. A short trip :) -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Scott Rohling Sent: Tuesday, July 29, 2008 6:01 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: How to increase swap V-disk sizes hmm.. I just tried this on my Linux workstation and the numbers are pretty close between free -m and swapon -s. Could it be that something is attempting to load into memory that can't be swapped out and really needs more than 128M?Maybe try 256M and see how it goes? Others here probably have more knowledge of Linux memory management and what conditions are going to result in an out of memory w/o hitting swap... Scott On Tue, Jul 29, 2008 at 3:54 PM, Scott Rohling [EMAIL PROTECTED]wrote: What about free -m -- does it show swapped being used? I've only used swapon -s to see what devices are there and their priority... So I'm not sure of the accuracy of that 'Used' number -- would just want to compare with free -m results... Scott On Tue, Jul 29, 2008 at 3:47 PM, Smith, Ann (ISD, IT) [EMAIL PROTECTED] wrote: Response from swapon -s swapon -s FilenameTypeSizeUsed Priority /dev/dasdb1 partition 297492 0 42 /dev/dasdbh1partition 297492 0 42 /dev/dasdbg1partition 297492 0 42 /dev/dasdbf1partition 297492 0 42 I'm a bit concerned that Used shows 0. The size looks good. Bottom line is I increased the swap disks substantially so that I could decrease the virtual storage (from 512M down to 128M). But according to the tomcat logs the out of memory problem is back. -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Scott Rohling Sent: Tuesday, July 29, 2008 5:36 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: How to increase swap V-disk sizes Then there's nothing you should need to do but restart the server.. see my previous post if you're trying to do it dynamically without restarting.. Do the swapon -s to determine what swap disks are being used.. Scott On Tue, Jul 29, 2008 at 3:33 PM, Smith, Ann (ISD, IT) [EMAIL PROTECTED] wrote: Yes. I think the server had swap disks. I just want to increase the size of the V-disks. I increased them as far as VM is concerned. -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Scott Rohling Sent: Tuesday, July 29, 2008 5:28 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: How to increase swap V-disk sizes A little confused because you seem to be indicating the swap disks are used, but are asking how to get Linux to use them? Anyway -- your swap disks are probably defined in /etc/fstab - so check there to ensure they are all mounted as swap. If you've added any disks, add the appropriate line to the fstab. To see what's in use: swapon -s Hope that helps.. Scott Rohling On Tue, Jul 29, 2008 at 3:19 PM, Smith, Ann (ISD, IT) [EMAIL PROTECTED] wrote: I have a SLES10 server that is running a java app using tomcat5 and is hitting out of memory conditions. I bumped up the virtual storage in the VM directory and found the out of memory problem went away. Now I want to bump the virtual storage back down but instead increase the size of the V-disks being used for SWAP. I saw that this server had 4 V-DISK MDISK statements. I increased each of the 4 minidisks from 20 blks to 60 blks: MDISK 0293 FB-512 V-DISK 60 MR LINUX SWAPAREA DASDDA MDISK 050D FB-512 V-DISK 60 MR LINUX SWAPAREA DASDDA MDISK 050C FB-512 V-DISK 60 MR LINUX SWAPAREA DASDDA MDISK 050B FB-512 V-DISK 60 MR LINUX SWAPAREA DASDDA I also found the swap disks get formatted in the PROFILE EXEC: For example: queue '1' queue 'LXSWAP' 'FORMAT 293 E ( BLK 512 ' if rc 0 then exit rc I rebooted the server (test server that I can reboot as
Re: Message in my Linux guest
Whoops yes it should be R. Thanks, Terry -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Evans, Kevin R Sent: Tuesday, July 29, 2008 6:13 AM To: LINUX-390@VM.MARIST.EDU Subject: Re: Message in my Linux guest Is your email signature supposed to be (missing an r?): [EMAIL PROTECTED] Regards, Kevin -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Martin, Terry R. (CMS/CTR) (CTR) Sent: Monday, July 28, 2008 6:52 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: Message in my Linux guest Thanks! Thank You, Terry Martin Lockheed Martin - Information Technology z/OS z/VM Systems - Performance and Tuning Cell - 443 632-4191 Work - 410 786-0386 [EMAIL PROTECTED] -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Shawn Wells Sent: Monday, July 28, 2008 5:31 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: Message in my Linux guest Martin, Terry R. (CMS/CTR) (CTR) wrote: Hi From the output out of my Linux guest can does this look like a MEMORY problem or not enough SWAP problem? I highlighted in RED two of the statements. Since I am rather new at all of this I am not sure what to make of this. Hi Terry, My guess is out of memory. Details: Jul 27 23:32:57 e49l021v kernel: oom-killer: gfp_mask=0x1d2 It is the job of the linux 'oom killer' to sacrifice one or more processes in order to free up memory for the system when all else fails. It will also kill any process sharing the same mm_struct as the selected process, for obvious reasons. Any particular process leader may be immunized against the oom killer if the value of it's /proc/pid/oomadj is set to the constant OOM_DISABLE. Reference http://linux-mm.org/OOM_Killer, it shows you both the process and sections of code. Without seeing the output of top or vmstat, my guess is that you have an application that is sucking up ALL resources on your system. The kernel is essentially protecting itself by killing that process, and issuing the error messages. This is backed up by messages in your output: Jul 27 23:33:00 e49l021v kernel: Normal: empty Jul 27 23:33:00 e49l021v kernel: HighMem: empty Jul 27 23:33:00 e49l021v kernel: Swap cache: add 184153, delete 184157 ,find 56852/73080, race 0+5 Jul 27 23:33:00 e49l021v kernel: Free swap:0kB fdbk=9 msgid=APSM011E stext=License file will expire in 9 day(s), 08-06-2008 HALT . Also, looks like you guys might want to look into licensing whatever this is ;) -- Shawn D. Wells Global Solutions Architect Lead, Linux on System z -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: How to increase swap V-disk sizes
in your original email i saw you formatted the V-DISK using using the CMS FORMAT command I do not see on your linux side where you create a swap partiition on these devices. i.e. mkswap /dev/dasdb and so on the CMS Format does not write a SWAP signature onto the V-DISK. we use the swapgen util to prep them at the CMS level so you don't have to modify the init processing on the linux side to bring them online you might want to look for where your doing the mkswap on linux or use swapgen on vm William 'Doug' Carroll Mainframe Systems Eng Sr I Global Technology Infrastructure ECS Virtualization Technology Office: (614) 213-4954 Pager: 8773282157 Cell: (614) 209-0649 Fax: (614) 244-9897 Home Fax: (866) 543-9156 http://www.jpmchase.com Smith, Ann (ISD, IT) [EMAIL PROTECTED] To tford.comLINUX-390@VM.MARIST.EDU Sent by: Linux on cc 390 Port [EMAIL PROTECTED] Subject IST.EDU Re: How to increase swap V-disk sizes 07/29/2008 06:25 PM Please respond to Linux on 390 Port [EMAIL PROTECTED] IST.EDU I am going to bump it's storage back up before I go home. Interestingly enough - although I see swap being used on other servers I do not see it used on the servers running this particular application. But I was using vmstat while the customer created the problem and I swear I saw swapping. I'll try again tomorrow. At least the problem is easily created. The problem occurs when a customer tries to convert a large report over on the zOS side to an EXCEL spreadsheet which gets saved on their PC. The vendor product runs on zOS and the thin client is running on linux. Smaller reports can be converted to EXCEL successfully and saved to the PC. When successful they receive a Windows prompt to save the file to disk or open it. The good news is with SLES10 and tomcat5 the customer whose download fails no longer hangs up tomcat. Thank you for your help. This is driving me crazy. A short trip :) -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Scott Rohling Sent: Tuesday, July 29, 2008 6:01 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: How to increase swap V-disk sizes hmm.. I just tried this on my Linux workstation and the numbers are pretty close between free -m and swapon -s. Could it be that something is attempting to load into memory that can't be swapped out and really needs more than 128M?Maybe try 256M and see how it goes? Others here probably have more knowledge of Linux memory management and what conditions are going to result in an out of memory w/o hitting swap... Scott On Tue, Jul 29, 2008 at 3:54 PM, Scott Rohling [EMAIL PROTECTED]wrote: What about free -m -- does it show swapped being used? I've only used swapon -s to see what devices are there and their priority... So I'm not sure of the accuracy of that 'Used' number -- would just want to compare with free -m results... Scott On Tue, Jul 29, 2008 at 3:47 PM, Smith, Ann (ISD, IT) [EMAIL PROTECTED] wrote: Response from swapon -s swapon -s FilenameTypeSizeUsed Priority /dev/dasdb1 partition 297492 0 42 /dev/dasdbh1partition 297492 0 42 /dev/dasdbg1partition 297492 0 42 /dev/dasdbf1partition 297492 0 42 I'm a bit concerned that Used shows 0. The size looks good. Bottom line is I increased the swap disks substantially so that I could decrease the virtual storage (from 512M down to 128M). But according to the tomcat logs the out of memory problem is back. -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Scott Rohling Sent: Tuesday, July 29, 2008 5:36 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: How to increase swap V-disk sizes Then there's nothing you should need to do but restart the server.. see my previous post if you're trying to do it dynamically without restarting.. Do the swapon -s to determine what swap disks are being used.. Scott On Tue, Jul 29, 2008 at 3:33 PM, Smith, Ann (ISD, IT) [EMAIL PROTECTED] wrote: Yes. I think the server had swap disks. I just want to increase the size of the V-disks. I increased them as far as VM is concerned. -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Scott Rohling Sent: Tuesday, July 29, 2008 5:28 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: How to increase swap V-disk sizes A little confused because you seem to be indicating the swap
Re: RHEL 4.7 now available
RHEL4 is still a fully support product from Redhat and as such still recieves new features and such RHEL4 will be going into Production 2 status here soon (around 1st of the year i think) at that time it will go into maintenance only or Production 2 support status and will no long receive new features but will continue receiving bug fixes etc.. So from Redhat POV, this is completely normal to see these releases William 'Doug' Carroll Mainframe Systems Eng Sr I Global Technology Infrastructure ECS Virtualization Technology Office: (614) 213-4954 Pager: 8773282157 Cell: (614) 209-0649 Fax: (614) 244-9897 Home Fax: (866) 543-9156 http://www.jpmchase.com Chase, John [EMAIL PROTECTED] To Sent by: Linux on LINUX-390@VM.MARIST.EDU 390 Port cc [EMAIL PROTECTED] IST.EDU Subject Re: RHEL 4.7 now available 07/25/2008 08:42 AM Please respond to Linux on 390 Port [EMAIL PROTECTED] IST.EDU -Original Message- From: Linux on 390 Port On Behalf Of Brad Hinson Copy/paste from announcement today. Summary of System z relevant changes below: -- Red Hat is pleased to announce the availability of 4.7 (kernel-2.6.9-78.EL) for the Red Hat Enterprise Linux 4 family of products. Seems unusual for a _release_ upgrade to be announced for a prior version (relatively) long after a newer _version_ has been generally available (how long has RHEL 5.x been out?). -jc- -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 - This communication is for informational purposes only. It is not intended as an offer or solicitation for the purchase or sale of any financial instrument or as an official confirmation of any transaction. All market prices, data and other information are not warranted as to completeness or accuracy and are subject to change without notice. Any comments or statements made herein do not necessarily reflect those of JPMorgan Chase Co., its subsidiaries and affiliates. This transmission may contain information that is privileged, confidential, legally privileged, and/or exempt from disclosure under applicable law. If you are not the intended recipient, you are hereby notified that any disclosure, copying, distribution, or use of the information contained herein (including any reliance thereon) is STRICTLY PROHIBITED. Although this transmission and any attachments are believed to be free of any virus or other defect that might affect any computer system into which it is received and opened, it is the responsibility of the recipient to ensure that it is virus free and no responsibility is accepted by JPMorgan Chase Co., its subsidiaries and affiliates, as applicable, for any loss or damage arising in any way from its use. If you received this transmission in error, please immediately contact the sender and destroy the material in its entirety, whether in electronic or hard copy format. Thank you. Please refer to http://www.jpmorgan.com/pages/disclosures for disclosures relating to UK legal entities. -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: How to increase swap V-disk sizes
On Tue, Jul 29, 2008 at 5:47 PM, in message [EMAIL PROTECTED], Smith, Ann (ISD, IT) [EMAIL PROTECTED] wrote: -snip- Bottom line is I increased the swap disks substantially so that I could decrease the virtual storage (from 512M down to 128M). But according to the tomcat logs the out of memory problem is back. Seeing the messages from the error log might be helpful. As well as if there is any indication in /var/log/messages or in the output of the dmesg command that the kernel out-of-memory killer is kicking in at any point. The total absence of any pages being used on your swap device leads me to believe it's not a Linux/kernel memory problem, but rather something in the Tomcat server itself. On a totally unrelated note, the method you're using to format your VDISKs is not terribly optimal. You would be better off using the SWAPGEN EXEC from Sine Nomine Associate's web site. Mark Post -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
Re: How to increase swap V-disk sizes
On Tue, Jul 29, 2008 at 8:12 PM, in message [EMAIL PROTECTED], Doug Carroll [EMAIL PROTECTED] wrote: in your original email i saw you formatted the V-DISK using using the CMS FORMAT command I do not see on your linux side where you create a swap partiition on these devices. i.e. mkswap /dev/dasdb and so on the CMS Format does not write a SWAP signature onto the V-DISK. The fact that swapon -s shows them as being active paging devices shows that at some point, a valid swap signature is being written on them. I would guess that one of the init scripts has been used to do that. That was fairly common before SWAPGEN came along. Mark Post -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
