Re: [Samba] Samba performance issues
Hi all just an update on our situation. We are not having any issues today, and currently have about 40 users with about 120 connections listed by smbstatus, and the load average is under 1%. We haven't seen any of the smbd processes running away with the CPU so far, fingers crossed. The primary change we made was implementing roaming profiles for our users, and disabling the mandatory profile. My suspicion is that while mandatory profiles were in place, we had some locking problems which resulted in the smbd processes utilizing all of the CPU. After shutting down completely, and manually killing off the hung processes, things are going much better. We are still running without the patch for locking issues that Robert mentions below, but that will be rectified soon. We are going to test out the file locking/mandatory profile hypothesis with our backup machine in the next few days, and hopefully will be able to provide some more detailed information on exactly what is happening. Thanks to all for the guidance, help & suggestions. John On Tuesday, September 24, 2002, at 07:06 PM, Robert Stuart wrote: > Hi, > > I'm rather interested in the outcome of this on or off the list; but I > suspect there will be other people on the list who are interested - > please keep posting to the list :-) > > I think we have very similar HW. We have a dual CPU (1.4G PIII) > LPr2000 > netserver with 10k and 15k drives. We normally sit around < 5% cpu so > it seems to be something about your config, probably not your HW. Our > box also does internal http, mail, dns, fax, lpd, ldap etc. > > Can I suggest you run top and see what seems to be using CPU time? > Does > %CPU in the process list include sys time? I think it does, if so, it > will help you get an idea of what is contributing to the 60% sys time > (even if top doesn't include sys then it is likely to be showing > culprits anyhow). Do you run anything else on this machine (eg > oracle)? :-) Perhaps posting ps axf and a copy of a top page might > help. > > Your LDAP backend... is it getting busy? Are the relevant things > indexed? > > I'd upgrade your kernel to the last RH7.3 errata (2.4.18-10?). > > You will likely get locking issues (discussed on samba-technical show > stopper) if you are using ldap sam, I patched the samba 2.2.5 rawhide > rpm. I'll send that in a separate email to you. > > Good luck. > > Robert Stuart > Systems Administrator > Ph: 61 7 3864 0364 > Fax: 61 7 3221 2553 > -- > To unsubscribe from this list go to the following URL and read the > instructions: http://lists.samba.org/mailman/listinfo/samba > -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Samba performance issues
Here is the dmesg file: Linux version 2.4.18-3 ([EMAIL PROTECTED]) (gcc version 2.96 2731 (Red Hat Linux 7.3 2.96-110)) #1 Thu Apr 18 07:37:53 EDT 2002 BIOS-provided physical RAM map: BIOS-e820: - 0009ec00 (usable) BIOS-e820: 0009ec00 - 000a (reserved) BIOS-e820: 000e9400 - 0010 (reserved) BIOS-e820: 0010 - c7ff (usable) BIOS-e820: c7ff - c7fffc00 (ACPI data) BIOS-e820: c7fffc00 - c800 (ACPI NVS) BIOS-e820: fec0 - fec1 (reserved) BIOS-e820: fee0 - fee01000 (reserved) BIOS-e820: fff8 - 0001 (reserved) 2303MB HIGHMEM available. On node 0 totalpages: 819184 zone(0): 4096 pages. zone(1): 225280 pages. zone(2): 589808 pages. Kernel command line: ro root=/dev/md4 Initializing CPU#0 Detected 1000.092 MHz processor. Console: colour VGA+ 80x25 Calibrating delay loop... 1992.29 BogoMIPS Memory: 3228532k/3276736k available (1119k kernel code, 47812k reserved, 775k data, 280k init, 2359232k highmem) Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes) Inode cache hash table entries: 262144 (order: 9, 2097152 bytes) Mount-cache hash table entries: 65536 (order: 7, 524288 bytes) Buffer cache hash table entries: 262144 (order: 8, 1048576 bytes) Page-cache hash table entries: 524288 (order: 9, 2097152 bytes) CPU: Before vendor init, caps: 0383fbff , vendor = 0 CPU: L1 I cache: 16K, L1 D cache: 16K CPU: L2 cache: 256K CPU: After vendor init, caps: 0383fbff Intel machine check architecture supported. Intel machine check reporting enabled on CPU#0. CPU: After generic, caps: 0383fbff CPU: Common caps: 0383fbff CPU: Intel Pentium III (Coppermine) stepping 0a Enabling fast FPU save and restore... done. Enabling unmasked SIMD FPU exception support... done. Checking 'hlt' instruction... OK. POSIX conformance testing by UNIFIX mtrr: v1.40 (20010327) Richard Gooch ([EMAIL PROTECTED]) mtrr: detected mtrr type: Intel PCI: PCI BIOS revision 2.10 entry at 0xfda11, last bus=1 PCI: Using configuration type 1 PCI: Probing PCI hardware PCI: Discovered primary peer bus 01 [IRQ] isapnp: Scanning for PnP cards... isapnp: No Plug & Play device found Linux NET4.0 for Linux 2.4 Based upon Swansea University Computer Society NET3.039 Initializing RT netlink socket apm: BIOS not found. Starting kswapd allocated 64 pages and 64 bhs reserved for the highmem bounces VFS: Diskquotas version dquot_6.5.0 initialized pty: 2048 Unix98 ptys configured Serial driver version 5.05c (2001-07-08) with MANY_PORTS MULTIPORT SHARE_IRQ SERIAL_PCI ISAPNP enabled ttyS00 at 0x03f8 (irq = 4) is a 16550A Real Time Clock Driver v1.10e block: 1024 slots per queue, batch=256 Uniform Multi-Platform E-IDE driver Revision: 6.31 ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx SvrWks OSB4: IDE controller on PCI bus 00 dev 79 SvrWks OSB4: chipset revision 0 SvrWks OSB4: not 100% native mode: will probe irqs later ide0: BM-DMA at 0x1800-0x1807, BIOS settings: hda:pio, hdb:pio ide1: BM-DMA at 0x1808-0x180f, BIOS settings: hdc:pio, hdd:pio hda: CD-224E, ATAPI CD/DVD-ROM drive hdc: no response (status = 0xa1), resetting drive hdc: no response (status = 0xa1) hdd: no response (status = 0xa1), resetting drive hdd: no response (status = 0xa1) ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 ide-floppy driver 0.99.newide Floppy drive(s): fd0 is 1.44M FDC 0 is a National Semiconductor PC87306 RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize ide-floppy driver 0.99.newide md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27 md: Autodetecting RAID arrays. md: autorun ... md: ... autorun DONE. NET4: Linux TCP/IP 1.0 for NET4.0 IP Protocols: ICMP, UDP, TCP, IGMP IP: routing cache hash table of 32768 buckets, 256Kbytes TCP: Hash tables configured (established 262144 bind 65536) Linux IP multicast router 0.06 plus PIM-SM NET4: Unix domain sockets 1.0/SMP for Linux NET4.0. RAMDISK: Compressed image found at block 0 Freeing initrd memory: 224k freed VFS: Mounted root (ext2 filesystem). SCSI subsystem driver Revision: 1.00 kmod: failed to exec /sbin/modprobe -s -k scsi_hostadapter, errno = 2 sym53c8xx: at PCI bus 1, device 5, function 0 sym53c8xx: 53c1010-33 detected with Symbios NVRAM sym53c8xx: at PCI bus 1, device 5, function 1 sym53c8xx: 53c1010-33 detected with Symbios NVRAM sym53c1010-33-0: rev 0x1 on pci bus 1 device 5 function 0 irq 5 sym53c1010-33-0: Symbios format NVRAM, ID 7, Fast-80, Parity Checking sym53c1010-33-0: on-chip RAM at 0xfd004000 sym53c1010-33-0: restart (scsi reset). sym53c1010-33-0: handling phase mismatch from SCRIPTS. sym53c1010-33-0: Downloading SCSI SCRIPTS. sym53c1010-33-1: rev 0x1 on pci bus 1 device 5 function 1 irq 9 sym53c1010-33-1: Symbios format NVRAM, ID 7, Fast-80, Pa
Re: [Samba] Samba performance issues
some output from ps wauxf: for smbd, all the processes are around this value: parky 1963 3.5 0.1 7488 3452 ?R07:37 15:41 \_ smbd -D for ldap, all of the processes are around this value: ldap 6150 0.0 0.1 75548 5068 ?S14:45 0:00 \_ /usr/sbin/slapd -u ldap we have about 30 of each process running right now. If I understand this correctly, it means that I have 30 ldap processes that are each using 75 MB of virtual memory, which would be 2.25 GB virtual memory for all of them. here is the output of cat /proc/sys/vm/bdflush - this seems to indicate that the vm is flushing every 5 seconds as indicated by vmstat? [root@student0 root]# cat /proc/sys/vm/bdflush 40 0 0 0 500 300060 0 0 I'll have to wait for downtime this evening to test with ldap down. On Tuesday, September 24, 2002, at 02:51 PM, Martin MOKREJ wrote: > On Tue, 24 Sep 2002, John Coston wrote: > >> we are using large caches for the ldap indexes - 5 megs each for 10 >> indexes. We are not running mysql. >> I can remove the caches and resart ldap to see what effect that has. > > > First, run "ps wauxf" and look which applicatiuons have highest > numbers in > "MEM" and "VSZ" and "RSS" columns. Save the output. > > Then, just have running "vmstat 1" in one window and in another window > shutdown ldap server. You should see after a while that the number > under > "cache" has significantly decreased. > > > > -- > Martin Mokrejs <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]> > PGP5.0i key is at http://www.natur.cuni.cz/~mmokrejs > MIPS / Institute for Bioinformatics <http://mips.gsf.de> > GSF - National Research Center for Environment and Health > Ingolstaedter Landstrasse 1, D-85764 Neuherberg, Germany > tel.: +49-89-3187 3683 , fax: +49-89-3187 3585 > > -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Samba performance issues
Sorry for the confusion - if I run "iostat" I get this: [root@foo root]# iostat Linux 2.4.18-3 (foo) 09/24/2002 avg-cpu: %user %nice%sys %idle 16.790.00 26.39 56.82 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-0 11.80 2.24 184.95 541354 44609586 dev8-1 11.80 1.67 184.95 403090 44609586 if I run iostat 1 it loops every second, so the results (for the first 16 seconds) are: [root@foo root]# iostat 1 16 Linux 2.4.18-3 (foo) 09/24/2002 avg-cpu: %user %nice%sys %idle 16.790.00 26.40 56.80 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-0 11.80 2.24 184.91 541354 44615082 dev8-1 11.80 1.67 184.91 403090 44615082 avg-cpu: %user %nice%sys %idle 31.000.00 69.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 37.000.00 63.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 26.000.00 74.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 40.950.00 59.050.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 32.000.00 68.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-04.00 0.00 136.00 0136 dev8-14.00 0.00 136.00 0136 avg-cpu: %user %nice%sys %idle 40.000.00 60.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 38.000.00 62.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 42.340.00 57.660.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-0 11.71 0.00 165.77 0184 dev8-1 11.71 0.00 165.77 0184 avg-cpu: %user %nice%sys %idle 34.070.00 65.930.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 36.000.00 64.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-06.00 0.00 104.00 0104 dev8-16.00 0.00 104.00 0104 avg-cpu: %user %nice%sys %idle 37.000.00 63.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 42.000.00 58.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 36.000.00 64.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 41.000.00 59.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00
Re: [Samba] Samba performance issues
sorry - the last iostat result is from another execution of the command (without the "1"), not from the looping output. On Tuesday, September 24, 2002, at 02:22 PM, John Coston wrote: > here is the output of vmstat, iostat, and uname: > > [root@foo root]# vmstat 1 >procs memoryswap io system > cpu > r b w swpd free buff cache si sobibo incs > us sy id > 21 0 1 0 61384 148780 2763956 0 0 293 91 113 > 17 26 57 > 17 0 2 0 61384 148780 2763956 0 0 0 0 15648 > 40 60 0 > 14 0 1 0 61384 148780 2763956 0 0 0 0 10941 > 39 61 0 > 11 0 1 0 61376 148780 2763956 0 0 0 0 122 109 > 30 70 0 > 15 0 3 0 61368 148780 2763956 0 0 052 155 143 > 47 53 0 > 20 0 1 0 61368 148780 2763956 0 0 0 4 11057 > 42 58 0 > 20 0 1 0 61368 148780 2763956 0 0 0 0 10864 > 41 59 0 > 20 0 1 0 61368 148780 2763956 0 0 0 0 10638 > 42 58 0 > 20 0 1 0 61368 148780 2763956 0 0 0 0 10565 > 30 70 0 > 13 0 1 0 61368 148780 2763956 0 0 012 200 129 > 36 64 0 > 13 0 1 0 61368 148780 2763956 0 0 0 0 10640 > 27 73 0 > 14 0 0 0 61368 148780 2763956 0 0 0 0 14870 > 34 66 0 > 20 0 0 0 61368 148780 2763956 0 0 0 0 12469 > 41 59 0 > > [root@foo root]# iostat 1 > Linux 2.4.18-3 (student0) 09/24/2002 > > avg-cpu: %user %nice%sys %idle > 16.710.00 26.26 57.02 > > Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn > dev8-0 11.84 2.25 185.49 541354 44584762 > dev8-1 11.83 1.68 185.49 403090 44584762 > > avg-cpu: %user %nice%sys %idle > 35.000.00 65.000.00 > > Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn > dev8-04.00 0.00 112.00 0112 > dev8-14.00 0.00 112.00 0112 > > avg-cpu: %user %nice%sys %idle > 49.000.00 51.000.00 > > Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn > dev8-00.00 0.00 0.00 0 0 > dev8-10.00 0.00 0.00 0 0 > > avg-cpu: %user %nice%sys %idle > 46.000.00 54.000.00 > > Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn > dev8-00.00 0.00 0.00 0 0 > dev8-10.00 0.00 0.00 0 0 > > avg-cpu: %user %nice%sys %idle > 36.000.00 64.000.00 > > Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn > dev8-00.00 0.00 0.00 0 0 > dev8-10.00 0.00 0.00 0 0 > > > uname -a > Linux foo 2.4.18-3 #1 Thu Apr 18 07:37:53 EDT 2002 i686 unknown > > Thanks! > > On Tuesday, September 24, 2002, at 02:04 PM, Martin MOKREJ wrote: > >> On Tue, 24 Sep 2002, John Coston wrote: >> >>> it's software RAID-1 using two fast wide scsi 36 gb discs. Filesystem >>> is ext3. We have one 30gb partition for share data, and the rest is >>> for >>> system and swap. >>> here is some of output from dmesg: >>> >>> md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27 >>> md: Autodetecting RAID arrays. >>> <...> >>> scsi0 : sym53c8xx-1.7.3c-20010512 >>> scsi1 : sym53c8xx-1.7.3c-20010512 >>> blk: queue c3c57618, I/O limit 4095Mb (mask 0x) >>>Vendor: HPModel: 36.4GB C 80-8C32 Rev: >>>Type: Direct-Access ANSI SCSI revision: 02 >>> blk: queue c3c57818, I/O limit 4095Mb (mask 0x) >>>Vendor: HP 36.4G Model: MAN3367MC Rev: HP04 >>>Type: Direct-Access ANSI SCSI revision: 02 >>> <...> >>> >>> I'm not too swift on filesystems and discs, so let me know if there >>> is >>> more info you need & thanks >> >> include output of: >> >> vmstat 1 >> iostat 1 >> uname -a >> >> -- >> Martin Mokrejs <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]> >> PGP5.0i key is at http://www.natur.cuni.cz/~mmokrejs >> MIPS / Institute for Bioinformatics <http://mips.gsf.de> >> GSF - National Research Center for Environment and Health >> Ingolstaedter Landstrasse 1, D-85764 Neuherberg, Germany >> tel.: +49-89-3187 3683 , fax: +49-89-3187 3585 >> > > -- > To unsubscribe from this list go to the following URL and read the > instructions: http://lists.samba.org/mailman/listinfo/samba -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Samba performance issues
here is the output of vmstat, iostat, and uname: [root@foo root]# vmstat 1 procs memoryswap io system cpu r b w swpd free buff cache si sobibo incs us sy id 21 0 1 0 61384 148780 2763956 0 0 293 91 113 17 26 57 17 0 2 0 61384 148780 2763956 0 0 0 0 15648 40 60 0 14 0 1 0 61384 148780 2763956 0 0 0 0 10941 39 61 0 11 0 1 0 61376 148780 2763956 0 0 0 0 122 109 30 70 0 15 0 3 0 61368 148780 2763956 0 0 052 155 143 47 53 0 20 0 1 0 61368 148780 2763956 0 0 0 4 11057 42 58 0 20 0 1 0 61368 148780 2763956 0 0 0 0 10864 41 59 0 20 0 1 0 61368 148780 2763956 0 0 0 0 10638 42 58 0 20 0 1 0 61368 148780 2763956 0 0 0 0 10565 30 70 0 13 0 1 0 61368 148780 2763956 0 0 012 200 129 36 64 0 13 0 1 0 61368 148780 2763956 0 0 0 0 10640 27 73 0 14 0 0 0 61368 148780 2763956 0 0 0 0 14870 34 66 0 20 0 0 0 61368 148780 2763956 0 0 0 0 12469 41 59 0 [root@foo root]# iostat 1 Linux 2.4.18-3 (student0) 09/24/2002 avg-cpu: %user %nice%sys %idle 16.710.00 26.26 57.02 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-0 11.84 2.25 185.49 541354 44584762 dev8-1 11.83 1.68 185.49 403090 44584762 avg-cpu: %user %nice%sys %idle 35.000.00 65.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-04.00 0.00 112.00 0112 dev8-14.00 0.00 112.00 0112 avg-cpu: %user %nice%sys %idle 49.000.00 51.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 46.000.00 54.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 36.000.00 64.000.00 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-00.00 0.00 0.00 0 0 dev8-10.00 0.00 0.00 0 0 avg-cpu: %user %nice%sys %idle 16.700.00 26.24 57.07 Device:tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn dev8-0 11.85 2.25 185.63 541354 44582090 dev8-1 11.84 1.68 185.63 403090 44582090 uname -a Linux foo 2.4.18-3 #1 Thu Apr 18 07:37:53 EDT 2002 i686 unknown Thanks! On Tuesday, September 24, 2002, at 02:04 PM, Martin MOKREJ wrote: > On Tue, 24 Sep 2002, John Coston wrote: > >> it's software RAID-1 using two fast wide scsi 36 gb discs. Filesystem >> is ext3. We have one 30gb partition for share data, and the rest is >> for >> system and swap. >> here is some of output from dmesg: >> >> md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27 >> md: Autodetecting RAID arrays. >> <...> >> scsi0 : sym53c8xx-1.7.3c-20010512 >> scsi1 : sym53c8xx-1.7.3c-20010512 >> blk: queue c3c57618, I/O limit 4095Mb (mask 0x) >>Vendor: HPModel: 36.4GB C 80-8C32 Rev: >>Type: Direct-Access ANSI SCSI revision: 02 >> blk: queue c3c57818, I/O limit 4095Mb (mask 0x) >>Vendor: HP 36.4G Model: MAN3367MC Rev: HP04 >>Type: Direct-Access ANSI SCSI revision: 02 >> <...> >> >> I'm not too swift on filesystems and discs, so let me know if there is >> more info you need & thanks > > include output of: > > vmstat 1 > iostat 1 > uname -a > > -- > Martin Mokrejs <[EMAIL PROTECTED]>, <[EMAIL PROTECTED]> > PGP5.0i key is at http://www.natur.cuni.cz/~mmokrejs > MIPS / Institute for Bioinformatics <http://mips.gsf.de> > GSF - National Research Center for Environment and Health > Ingolstaedter Landstrasse 1, D-85764 Neuherberg, Germany > tel.: +49-89-3187 3683 , fax: +49-89-3187 3585 > -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
Re: [Samba] Samba performance issues
it's software RAID-1 using two fast wide scsi 36 gb discs. Filesystem is ext3. We have one 30gb partition for share data, and the rest is for system and swap. here is some of output from dmesg: md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27 md: Autodetecting RAID arrays. <...> scsi0 : sym53c8xx-1.7.3c-20010512 scsi1 : sym53c8xx-1.7.3c-20010512 blk: queue c3c57618, I/O limit 4095Mb (mask 0x) Vendor: HPModel: 36.4GB C 80-8C32 Rev: Type: Direct-Access ANSI SCSI revision: 02 blk: queue c3c57818, I/O limit 4095Mb (mask 0x) Vendor: HP 36.4G Model: MAN3367MC Rev: HP04 Type: Direct-Access ANSI SCSI revision: 02 <...> I'm not too swift on filesystems and discs, so let me know if there is more info you need & thanks On Tuesday, September 24, 2002, at 01:40 PM, Bradley W. Langhorst wrote: > > On Tue, 2002-09-24 at 15:57, John Coston wrote: >> 12:46pm up 2 days, 17:14, 3 users, load average: 20.24, 20.26, >> 20.51 >> 129 processes: 106 sleeping, 23 running, 0 zombie, 0 stopped >> CPU states: 36.1% user, 63.8% system, 0.0% nice, 0.0% idle >> Mem: 3229040K av, 3166372K used, 62668K free, 0K shrd, > > i have about 20 users on a 900Mhz machine with 100G of storage (only > 384M ram) > > i don't think it's ever been cpu bound as a result of samba activity. > > that 63.8% system seems out of whack... > what is the disk subsystem? > > brad > > -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
[Samba] Samba performance issues
Hi all We are implementing samba-ldap to act as an nt pdc and are seeing performance problems. We have a 1ghz, 3gb Ram, 36gb box that is running samba-2.2.5 and openldap-2.0.23 under redhat 7.3 with kernel 2.4.18-3. Clients are all Win2k SP3. All the ldap requests are to the localhost interface. The box is acting as the PDC for the domain, and also sharing diskspace and printers. When we get around 30-40 smbd processes running everything slows to a crawl. we have about 30 slapd processes running, and the total process count for the box is about 130 at this point. here is the output of top at this point: 12:46pm up 2 days, 17:14, 3 users, load average: 20.24, 20.26, 20.51 129 processes: 106 sleeping, 23 running, 0 zombie, 0 stopped CPU states: 36.1% user, 63.8% system, 0.0% nice, 0.0% idle Mem: 3229040K av, 3166372K used, 62668K free, 0K shrd, 148480K buff Swap: 513976K av, 0K used, 513976K free 2758060K cached We would like to support about 100 simultaneous users. We were using mandatory server based profiles, but have discontinued them to try and improve performance. So, my questions are: 1. Is the amount of processes desired unreasonable for the hardware? 2. If so, does anybody have some figures on users supported for a particular hardware configuration? 3. We are seeing (using smbstatus) exclusive oplocks on files that are on read-only (both in the share definition and the filesystem permissions) shares. Should this be happening? Could we use fake_oplocks on the share to improve performance? 4. Has anybody had any luck with mandatory server-based profiles? any help or suggestions would be greatly appreciated. John -- To unsubscribe from this list go to the following URL and read the instructions: http://lists.samba.org/mailman/listinfo/samba
