[clug] dual opteron performance problem
Rob Shugg
rob at kinetic.com.au
Wed Dec 15 04:14:55 GMT 2004
Guys
I am trying to determine what is limiting the performance of my debian Opteron
box. It has two cpus and a two sata disc software raid 1 array. the system boots
from an ide drive.
We are using the system as a vmware host for a couple of vmware debian guests.
as soon as we load up one of the virtual servers the system bogs down and
becomes unusable.
the thing is, the CPU idle time rarely gets below 90% see the stats below, I'd
appreciate any suggestions as to how to pinpoint the problem.
I have heard a few snippets about sata not being as good as promised, could that
be an issue?
rob
load with the virtual machines idling:
----------------------------------------
top - 13:29:50 up 73 days, 22:11, 2 users, load average: 0.05, 0.12, 0.27
Tasks: 176 total, 1 running, 175 sleeping, 0 stopped, 0 zombie
Cpu(s): 1.0% user, 2.6% system, 0.0% nice, 96.4% idle
Mem: 1033492k total, 1007636k used, 25856k free, 26256k buffers
Swap: 1967944k total, 182912k used, 1785032k free, 859284k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1814 root 17 0 776 716 504 S 1.0 0.1 892:28.98 top
7340 vmware 12 -10 10484 6016 5796 S 1.0 0.6 301:27.41 vmware-vmx
27471 root 17 0 756 688 500 S 1.0 0.1 408:18.46 top
Load with one vm doing some dumping and loading some mysql data:
----------------------------------------------------------------
top - 13:45:56 up 73 days, 22:27, 2 users, load average: 9.27, 3.44, 1.38
Tasks: 183 total, 1 running, 181 sleeping, 0 stopped, 1 zombie
Cpu(s): 1.6% user, 7.7% system, 0.0% nice, 90.8% idle
Mem: 1033492k total, 1020476k used, 13016k free, 8008k buffers
Swap: 1967944k total, 184776k used, 1783168k free, 909336k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
11717 rob 15 0 740 676 512 R 2.9 0.1 0:17.01 top
23629 vmware 6 -10 183m 180m 180m D 0.7 17.9 2:38.36 vmware-vmx
23630 vmware 6 -10 183m 180m 180m D 0.7 17.9 2:37.63 vmware-vmx
7 root 9 0 0 0 0 D 0.3 0.0 37:50.63 kupdated
23631 vmware 5 -10 183m 180m 180m D 0.3 17.9 2:38.26 vmware-vmx
9 root 9 0 0 0 0 D 0.0 0.0 36:02.89 kjournald
247 root 9 0 0 0 0 D 0.0 0.0 129:27.57 kjournald
634 root 9 0 1772 372 372 D 0.0 0.0 5:00.56 snmpd
440 rob 9 0 2856 1024 1024 D 0.0 0.1 5:34.66 korgac
23627 vmware 5 -10 183m 180m 180m D 0.0 17.9 2:38.05 vmware-vmx
23628 vmware 5 -10 183m 180m 180m D 0.0 17.9 2:38.50 vmware-vmx
11030 root 9 0 1560 540 540 D 0.0 0.1 0:00.27 smbd
rob at k9:~$ iostat
Linux 2.4.27 (k9) 15/12/04
avg-cpu: %user %nice %sys %iowait %idle
1.21 0.20 3.08 0.00 95.51
Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn
sda 7.55 547.48 340.46 3497371076 2174872016
sdb 7.57 550.70 340.46 3517943864 2174872016
hda 2.00 9.92 25.22 63391716 161095336
hda1 1.03 5.31 11.77 33903026 75176536
hda2 0.75 0.84 11.40 5353466 72801576
hda3 0.21 3.78 2.05 24135192 13117224
rob at k9:~$ lspci
0000:00:00.0 Host bridge: Advanced Micro Devices [AMD] AMD-8151 System
Controller (rev 13)
0000:00:01.0 PCI bridge: Advanced Micro Devices [AMD] AMD-8151 AGP Bridge (rev 13)
0000:00:06.0 PCI bridge: Advanced Micro Devices [AMD] AMD-8111 PCI (rev 07)
0000:00:07.0 ISA bridge: Advanced Micro Devices [AMD] AMD-8111 LPC (rev 05)
0000:00:07.1 IDE interface: Advanced Micro Devices [AMD] AMD-8111 IDE (rev 03)
0000:00:07.2 SMBus: Advanced Micro Devices [AMD] AMD-8111 SMBus 2.0 (rev 02)
0000:00:07.3 Bridge: Advanced Micro Devices [AMD] AMD-8111 ACPI (rev 05)
0000:00:07.5 Multimedia audio controller: Advanced Micro Devices [AMD] AMD-8111
AC97 Audio (rev 03)
0000:00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge
0000:00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge
0000:00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge
0000:00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge
0000:00:19.0 Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge
0000:00:19.1 Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge
0000:00:19.2 Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge
0000:00:19.3 Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge
0000:01:00.0 USB Controller: Advanced Micro Devices [AMD] AMD-8111 USB (rev 0b)
0000:01:00.1 USB Controller: Advanced Micro Devices [AMD] AMD-8111 USB (rev 0b)
0000:01:03.0 Ethernet controller: Intel Corp. 82541EI Gigabit Ethernet
Controller (Copper)
0000:01:05.0 Unknown mass storage controller: Silicon Image, Inc. (formerly CMD
Technology Inc) SiI 3114 [SATALink/SATARaid] Serial ATA Controller (rev 02)
0000:01:0a.0 FireWire (IEEE 1394): VIA Technologies, Inc. IEEE 1394 Host
Controller (rev 80)
0000:01:0b.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
Controller (rev 61)
0000:01:0b.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
Controller (rev 61)
0000:01:0b.2 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 62)
0000:02:00.0 VGA compatible controller: ATI Technologies Inc Radeon RV100 QY
[Radeon 7000/VE]
--
CTO
KPT Canberra
http://www.kinetic.com.au
Ph 61 2 61621770
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