Re: FW: zLinux and MySql

2007-07-03 Thread Calzaretta Henry - hcalza
Anton, The folks here that evaluated Open Source database systems seemed to find PostgreSQL to be a much more robust solution. They've been using it here in production for at least 3 years on zLinux. The database is small ( 100GB) but is quite active. The application is written in Perl and it

WAS6.0-SLES9-64bit-Native Memory Leak

2007-03-15 Thread Calzaretta Henry - hcalza
We've been running a WebSphere application for a few years on 4-WAS V5.0 app servers on separate zLinux-SLE8-31bit z/VM guests. The virtual memory size of each guest was 1GB and the maximum heap size in the JVM was set to 768MB. These systems do little or no swapping and can run for days and

Re: WAS6.0-SLES9-64bit-Native Memory Leak

2007-03-15 Thread Calzaretta Henry - hcalza
, in message [EMAIL PROTECTED], Calzaretta Henry - hcalza [EMAIL PROTECTED] wrote: -snip- We upgraded one of the 4 servers to WAS V6.0.2.17 and zLinux- SLES9- SP3- 64bit. After running for 1 day we saw the virtual memory used by WAS increase to over 1.5GB and the system began swapping heavily. Hank

Re: NFS over TCP

2006-09-22 Thread Calzaretta Henry - hcalza
- Our /etc/fstab entry for the NFS mounts include the proto=tcp option. 192.168.47.68:/xs2files/ExternalMenu /xs2files/ExternalMenu nfs ro,proto=tcp - A 'netstat -apno' command issued on the client side will show 'tcp' in the 'Proto' column for each of the mounts (Those with Port 2049 in the

NFS hangs

2006-02-14 Thread Calzaretta Henry - hcalza
Hello, We have a filesystem which is shared by 4 Linux guests via NFS. We have been using this setup for quite some time. Recently we've seen 2 cases where access to the NFS file on 1 or more of the non-owning guests began to slow down. A df command on the effected system would stop before

Re: NFS hangs

2006-02-14 Thread Calzaretta Henry - hcalza
Neale, - No changes have been made to z/VM. - These are 1G WebSphere guests, each with 768MB java heap size. - All other commands work fine on all 4 servers. Only commands going against the NFS, e.g. df, ls, on the effected system(s) run slowly until that system is bounced. - z/VM has 17GB

Re: NFS hangs

2006-02-14 Thread Calzaretta Henry - hcalza
Alan, I will try those commands the next time we see the problem. The df and ls commands against the NFS do eventually return, after 10 to 20 seconds, so data is actually moving, albeit slowly. Thanks, Hank -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf

Re: NFS hangs

2006-02-14 Thread Calzaretta Henry - hcalza
see above. Thanks, Hank -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of John Summerfied Sent: Tuesday, February 14, 2006 11:21 AM To: LINUX-390@VM.MARIST.EDU Subject: Re: NFS hangs Calzaretta Henry - hcalza wrote: Hello, We have a filesystem which

Re: CPU Consumption by ksoftirqd_CPUx processes

2006-01-13 Thread Calzaretta Henry - hcalza
information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation. -Original Message- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Calzaretta Henry - hcalza Sent

CPU Consumption by ksoftirqd_CPUx processes

2006-01-12 Thread Calzaretta Henry - hcalza
Hello, We have a WebSphere application running on 4 z/Linux z/VM guests accessing a DB2/UDB V8.2 database running on a separate z/Linux guest. On occasion, the DB2 work will slow to a crawl for several minutes and a top command run on the DB2 guest shows most of the available CPU resource is

What is the proper way to repair filesystems with fsck?

2005-12-13 Thread Calzaretta Henry - hcalza
Hello, I have twice experienced a problem where at boot time fsck determined that the root filesystem (ext3) was broken. fsck was run at boot time because the system determined that root has been mounted 26 times without being checked. The system was up and running minutes previous to this