Mailinglist Archive: opensuse-factory (905 mails)
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Re: [opensuse-factory] RC1 F@H low cpu usage (kernel bug?)
- From: Michael Born <michael.born@xxxxxxxxxxxxxxxxxxxx>
- Date: Fri, 6 Jun 2008 09:22:22 +0200
- Message-id: <200806060922.22165.michael.born@xxxxxxxxxxxxxxxxxxxx>
The same strange behavior I could see with an Intel quad core.
The folding@home smp client uses about 60% of the cpu under 10.3.
I stopped the smp client and restarted it under 11.0rc1. There only 30% of the
cpu are used for the calculations. Still all four threads are running but
with lower cpu usage.
What's the reason for this? Is it a bug in the 2.6.25 kernel?
Michael
system:
Intel X3350
DFI DK P35
2x2GB PC2-1066
opensuse 10.3 64bit
top - 23:29:10 up 14:41, 5 users, load average: 2.84, 2.90, 2.88
Tasks: 168 total, 1 running, 167 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.1%us, 4.1%sy, 61.6%ni, 32.5%id, 0.4%wa, 0.1%hi, 1.2%si, 0.0%st
Mem: 4053536k total, 4025048k used, 28488k free, 73180k buffers
Swap: 4192924k total, 92k used, 4192832k free, 3351000k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
6294 michael 34 19 39436 15m 1816 S 95 0.4 163:35.16 FahCore_a1.exe
6295 michael 34 19 37496 14m 1476 S 62 0.4 104:33.94 FahCore_a1.exe
6296 michael 34 19 37496 14m 1472 S 56 0.4 97:12.70 FahCore_a1.exe
6297 michael 34 19 37956 14m 1556 S 55 0.4 94:58.54 FahCore_a1.exe
3418 root 15 0 261m 101m 15m S 1 2.6 2:37.05 Xorg
top - 23:29:39 up 14:42, 5 users, load average: 2.61, 2.85, 2.87
Tasks: 168 total, 1 running, 167 sleeping, 0 stopped, 0 zombie
Cpu0 : 0.0%us, 3.6%sy, 52.0%ni, 43.0%id, 0.0%wa, 0.0%hi, 1.3%si, 0.0%st
Cpu1 : 0.3%us, 4.3%sy, 52.5%ni, 41.2%id, 0.3%wa, 0.0%hi, 1.3%si, 0.0%st
Cpu2 : 0.0%us, 3.7%sy, 93.7%ni, 1.3%id, 0.0%wa, 0.0%hi, 1.3%si, 0.0%st
Cpu3 : 0.3%us, 5.0%sy, 55.6%ni, 37.1%id, 0.7%wa, 0.0%hi, 1.3%si, 0.0%st
Mem: 4053536k total, 4027168k used, 26368k free, 73288k buffers
Swap: 4192924k total, 92k used, 4192832k free, 3353456k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
6294 michael 34 19 39436 15m 1816 S 99 0.4 164:03.56 FahCore_a1.exe
6295 michael 34 19 37496 14m 1476 S 62 0.4 104:52.00 FahCore_a1.exe
6296 michael 34 19 37496 14m 1472 S 58 0.4 97:29.74 FahCore_a1.exe
6297 michael 34 19 37956 14m 1556 S 57 0.4 95:15.24 FahCore_a1.exe
3418 root 15 0 261m 101m 15m S 0 2.6 2:37.22 Xorg
1 root 18 0 808 308 244 S 0 0.0 0:01.10 init
2 root 11 -5 0 0 0 S 0 0.0 0:00.00 kthreadd
michael@musashi:~> uname -a
Linux musashi 2.6.22.17-0.1-default #1 SMP 2008/02/10 20:01:04 UTC x86_64
x86_64 x86_64 GNU/Linux
---------------------------------------------------------------
opensuse 11.0rc1 64bit
michael@musashi:~> uname -a
Linux musashi 2.6.25.4-8-default #1 SMP 2008-05-26 15:23:05 +0200 x86_64
x86_64 x86_64 GNU/Linux
top - 00:03:55 up 10 min, 1 user, load average: 1.09, 0.54, 0.25
Tasks: 157 total, 2 running, 155 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.0%us, 1.9%sy, 29.0%ni, 68.0%id, 0.4%wa, 0.0%hi, 0.8%si, 0.0%st
Mem: 4060380k total, 1433956k used, 2626424k free, 65632k buffers
Swap: 10490404k total, 0k used, 10490404k free, 778912k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
25221 michael 39 19 39432 17m 1536 S 45 0.4 0:23.16 FahCore_a1.exe
25222 michael 39 19 37496 15m 1316 S 29 0.4 0:14.55 FahCore_a1.exe
25223 michael 39 19 37500 15m 1316 S 26 0.4 0:13.14 FahCore_a1.exe
25224 michael 39 19 38020 15m 1328 S 26 0.4 0:13.20 FahCore_a1.exe
3229 root 20 0 550m 108m 20m S 1 2.7 0:17.88 X
top - 00:04:28 up 10 min, 1 user, load average: 1.57, 0.71, 0.32
Tasks: 157 total, 1 running, 156 sleeping, 0 stopped, 0 zombie
Cpu0 : 0.0%us, 2.0%sy, 25.8%ni, 70.5%id, 1.0%wa, 0.0%hi, 0.7%si, 0.0%st
Cpu1 : 0.0%us, 2.9%sy, 49.0%ni, 46.5%id, 0.0%wa, 0.0%hi, 1.6%si, 0.0%st
Cpu2 : 0.0%us, 1.0%sy, 21.6%ni, 76.8%id, 0.0%wa, 0.0%hi, 0.7%si, 0.0%st
Cpu3 : 0.0%us, 0.9%sy, 19.9%ni, 78.8%id, 0.0%wa, 0.0%hi, 0.3%si, 0.0%st
Mem: 4060380k total, 1433088k used, 2627292k free, 65704k buffers
Swap: 10490404k total, 0k used, 10490404k free, 778920k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
25221 michael 39 19 39432 17m 1536 S 45 0.4 0:38.21 FahCore_a1.exe
25222 michael 39 19 37496 15m 1316 S 29 0.4 0:23.96 FahCore_a1.exe
25223 michael 39 19 37500 15m 1316 S 26 0.4 0:21.74 FahCore_a1.exe
25224 michael 39 19 38020 15m 1328 S 26 0.4 0:21.76 FahCore_a1.exe
3229 root 20 0 550m 108m 20m S 1 2.7 0:18.08 X
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The folding@home smp client uses about 60% of the cpu under 10.3.
I stopped the smp client and restarted it under 11.0rc1. There only 30% of the
cpu are used for the calculations. Still all four threads are running but
with lower cpu usage.
What's the reason for this? Is it a bug in the 2.6.25 kernel?
Michael
system:
Intel X3350
DFI DK P35
2x2GB PC2-1066
opensuse 10.3 64bit
top - 23:29:10 up 14:41, 5 users, load average: 2.84, 2.90, 2.88
Tasks: 168 total, 1 running, 167 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.1%us, 4.1%sy, 61.6%ni, 32.5%id, 0.4%wa, 0.1%hi, 1.2%si, 0.0%st
Mem: 4053536k total, 4025048k used, 28488k free, 73180k buffers
Swap: 4192924k total, 92k used, 4192832k free, 3351000k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
6294 michael 34 19 39436 15m 1816 S 95 0.4 163:35.16 FahCore_a1.exe
6295 michael 34 19 37496 14m 1476 S 62 0.4 104:33.94 FahCore_a1.exe
6296 michael 34 19 37496 14m 1472 S 56 0.4 97:12.70 FahCore_a1.exe
6297 michael 34 19 37956 14m 1556 S 55 0.4 94:58.54 FahCore_a1.exe
3418 root 15 0 261m 101m 15m S 1 2.6 2:37.05 Xorg
top - 23:29:39 up 14:42, 5 users, load average: 2.61, 2.85, 2.87
Tasks: 168 total, 1 running, 167 sleeping, 0 stopped, 0 zombie
Cpu0 : 0.0%us, 3.6%sy, 52.0%ni, 43.0%id, 0.0%wa, 0.0%hi, 1.3%si, 0.0%st
Cpu1 : 0.3%us, 4.3%sy, 52.5%ni, 41.2%id, 0.3%wa, 0.0%hi, 1.3%si, 0.0%st
Cpu2 : 0.0%us, 3.7%sy, 93.7%ni, 1.3%id, 0.0%wa, 0.0%hi, 1.3%si, 0.0%st
Cpu3 : 0.3%us, 5.0%sy, 55.6%ni, 37.1%id, 0.7%wa, 0.0%hi, 1.3%si, 0.0%st
Mem: 4053536k total, 4027168k used, 26368k free, 73288k buffers
Swap: 4192924k total, 92k used, 4192832k free, 3353456k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
6294 michael 34 19 39436 15m 1816 S 99 0.4 164:03.56 FahCore_a1.exe
6295 michael 34 19 37496 14m 1476 S 62 0.4 104:52.00 FahCore_a1.exe
6296 michael 34 19 37496 14m 1472 S 58 0.4 97:29.74 FahCore_a1.exe
6297 michael 34 19 37956 14m 1556 S 57 0.4 95:15.24 FahCore_a1.exe
3418 root 15 0 261m 101m 15m S 0 2.6 2:37.22 Xorg
1 root 18 0 808 308 244 S 0 0.0 0:01.10 init
2 root 11 -5 0 0 0 S 0 0.0 0:00.00 kthreadd
michael@musashi:~> uname -a
Linux musashi 2.6.22.17-0.1-default #1 SMP 2008/02/10 20:01:04 UTC x86_64
x86_64 x86_64 GNU/Linux
---------------------------------------------------------------
opensuse 11.0rc1 64bit
michael@musashi:~> uname -a
Linux musashi 2.6.25.4-8-default #1 SMP 2008-05-26 15:23:05 +0200 x86_64
x86_64 x86_64 GNU/Linux
top - 00:03:55 up 10 min, 1 user, load average: 1.09, 0.54, 0.25
Tasks: 157 total, 2 running, 155 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.0%us, 1.9%sy, 29.0%ni, 68.0%id, 0.4%wa, 0.0%hi, 0.8%si, 0.0%st
Mem: 4060380k total, 1433956k used, 2626424k free, 65632k buffers
Swap: 10490404k total, 0k used, 10490404k free, 778912k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
25221 michael 39 19 39432 17m 1536 S 45 0.4 0:23.16 FahCore_a1.exe
25222 michael 39 19 37496 15m 1316 S 29 0.4 0:14.55 FahCore_a1.exe
25223 michael 39 19 37500 15m 1316 S 26 0.4 0:13.14 FahCore_a1.exe
25224 michael 39 19 38020 15m 1328 S 26 0.4 0:13.20 FahCore_a1.exe
3229 root 20 0 550m 108m 20m S 1 2.7 0:17.88 X
top - 00:04:28 up 10 min, 1 user, load average: 1.57, 0.71, 0.32
Tasks: 157 total, 1 running, 156 sleeping, 0 stopped, 0 zombie
Cpu0 : 0.0%us, 2.0%sy, 25.8%ni, 70.5%id, 1.0%wa, 0.0%hi, 0.7%si, 0.0%st
Cpu1 : 0.0%us, 2.9%sy, 49.0%ni, 46.5%id, 0.0%wa, 0.0%hi, 1.6%si, 0.0%st
Cpu2 : 0.0%us, 1.0%sy, 21.6%ni, 76.8%id, 0.0%wa, 0.0%hi, 0.7%si, 0.0%st
Cpu3 : 0.0%us, 0.9%sy, 19.9%ni, 78.8%id, 0.0%wa, 0.0%hi, 0.3%si, 0.0%st
Mem: 4060380k total, 1433088k used, 2627292k free, 65704k buffers
Swap: 10490404k total, 0k used, 10490404k free, 778920k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
25221 michael 39 19 39432 17m 1536 S 45 0.4 0:38.21 FahCore_a1.exe
25222 michael 39 19 37496 15m 1316 S 29 0.4 0:23.96 FahCore_a1.exe
25223 michael 39 19 37500 15m 1316 S 26 0.4 0:21.74 FahCore_a1.exe
25224 michael 39 19 38020 15m 1328 S 26 0.4 0:21.76 FahCore_a1.exe
3229 root 20 0 550m 108m 20m S 1 2.7 0:18.08 X
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For additional commands, e-mail: opensuse-factory+help@xxxxxxxxxxxx
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