using cpu.cfs_quota_us and cpu.cfs_period_us to limit CPU usage
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There are 32 cores in a system (2 cpus each 16 cores) and I want to
limit a user to use only 4 cores (100% usage for that 4 cores). There
are two kernel parameter for that according to the manuals:
cpu.cfs_quota_us
and cpu.cfs_period_us
An example on the kernel.org document says:
With 500ms period and 1000ms quota, the group
can get 2 CPUs worth of runtime every 500ms.
# echo 1000000 > cpu.cfs_quota_us /* quota = 1000ms */
# echo 500000 > cpu.cfs_period_us /* period = 500ms */
I want to know how those ms are determined? In my case, I think the quota is 32000000 and the period is 4000000. Am I right? The content of etc/cgconfig.conf
is:
group ansys
cpu
cpu.cfs_quota_us = 32000000;
cpu.cfs_period_us = 4000000;
memory
memory.limit_in_bytes = 8000m;
But it doesn't work! and I get an error when I run /etc.init.d.cgconfig start
, I get this error:
Failed to parse /etc/cgconfig.conf or /etc/cgconfig.d
[FAILED]Starting cgconfig service: /sbin/cgconfigparser; error loading
/etc/cgconfig.conf: Failed to remove a non-empty group
centos linux-kernel cpu quota
add a comment |
There are 32 cores in a system (2 cpus each 16 cores) and I want to
limit a user to use only 4 cores (100% usage for that 4 cores). There
are two kernel parameter for that according to the manuals:
cpu.cfs_quota_us
and cpu.cfs_period_us
An example on the kernel.org document says:
With 500ms period and 1000ms quota, the group
can get 2 CPUs worth of runtime every 500ms.
# echo 1000000 > cpu.cfs_quota_us /* quota = 1000ms */
# echo 500000 > cpu.cfs_period_us /* period = 500ms */
I want to know how those ms are determined? In my case, I think the quota is 32000000 and the period is 4000000. Am I right? The content of etc/cgconfig.conf
is:
group ansys
cpu
cpu.cfs_quota_us = 32000000;
cpu.cfs_period_us = 4000000;
memory
memory.limit_in_bytes = 8000m;
But it doesn't work! and I get an error when I run /etc.init.d.cgconfig start
, I get this error:
Failed to parse /etc/cgconfig.conf or /etc/cgconfig.d
[FAILED]Starting cgconfig service: /sbin/cgconfigparser; error loading
/etc/cgconfig.conf: Failed to remove a non-empty group
centos linux-kernel cpu quota
I updated the post
– mahmood
Mar 22 '16 at 14:29
add a comment |
There are 32 cores in a system (2 cpus each 16 cores) and I want to
limit a user to use only 4 cores (100% usage for that 4 cores). There
are two kernel parameter for that according to the manuals:
cpu.cfs_quota_us
and cpu.cfs_period_us
An example on the kernel.org document says:
With 500ms period and 1000ms quota, the group
can get 2 CPUs worth of runtime every 500ms.
# echo 1000000 > cpu.cfs_quota_us /* quota = 1000ms */
# echo 500000 > cpu.cfs_period_us /* period = 500ms */
I want to know how those ms are determined? In my case, I think the quota is 32000000 and the period is 4000000. Am I right? The content of etc/cgconfig.conf
is:
group ansys
cpu
cpu.cfs_quota_us = 32000000;
cpu.cfs_period_us = 4000000;
memory
memory.limit_in_bytes = 8000m;
But it doesn't work! and I get an error when I run /etc.init.d.cgconfig start
, I get this error:
Failed to parse /etc/cgconfig.conf or /etc/cgconfig.d
[FAILED]Starting cgconfig service: /sbin/cgconfigparser; error loading
/etc/cgconfig.conf: Failed to remove a non-empty group
centos linux-kernel cpu quota
There are 32 cores in a system (2 cpus each 16 cores) and I want to
limit a user to use only 4 cores (100% usage for that 4 cores). There
are two kernel parameter for that according to the manuals:
cpu.cfs_quota_us
and cpu.cfs_period_us
An example on the kernel.org document says:
With 500ms period and 1000ms quota, the group
can get 2 CPUs worth of runtime every 500ms.
# echo 1000000 > cpu.cfs_quota_us /* quota = 1000ms */
# echo 500000 > cpu.cfs_period_us /* period = 500ms */
I want to know how those ms are determined? In my case, I think the quota is 32000000 and the period is 4000000. Am I right? The content of etc/cgconfig.conf
is:
group ansys
cpu
cpu.cfs_quota_us = 32000000;
cpu.cfs_period_us = 4000000;
memory
memory.limit_in_bytes = 8000m;
But it doesn't work! and I get an error when I run /etc.init.d.cgconfig start
, I get this error:
Failed to parse /etc/cgconfig.conf or /etc/cgconfig.d
[FAILED]Starting cgconfig service: /sbin/cgconfigparser; error loading
/etc/cgconfig.conf: Failed to remove a non-empty group
centos linux-kernel cpu quota
centos linux-kernel cpu quota
edited Mar 22 '16 at 14:29
mahmood
asked Mar 22 '16 at 11:08
mahmoodmahmood
3702821
3702821
I updated the post
– mahmood
Mar 22 '16 at 14:29
add a comment |
I updated the post
– mahmood
Mar 22 '16 at 14:29
I updated the post
– mahmood
Mar 22 '16 at 14:29
I updated the post
– mahmood
Mar 22 '16 at 14:29
add a comment |
1 Answer
1
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Have a look at cpuset cgroup/container parameter. It lets you pin containers to specific cpu cores. In your case, you can specify only a single container to cores 0-3, and let no other container execute on the same core, there by allowing 4 cores with 100% utilization per container.
Furthermore cpuset is a more effective distribution mechanism when compared to cpu (that uses shares/quota).
add a comment |
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1 Answer
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1 Answer
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active
oldest
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oldest
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oldest
votes
Have a look at cpuset cgroup/container parameter. It lets you pin containers to specific cpu cores. In your case, you can specify only a single container to cores 0-3, and let no other container execute on the same core, there by allowing 4 cores with 100% utilization per container.
Furthermore cpuset is a more effective distribution mechanism when compared to cpu (that uses shares/quota).
add a comment |
Have a look at cpuset cgroup/container parameter. It lets you pin containers to specific cpu cores. In your case, you can specify only a single container to cores 0-3, and let no other container execute on the same core, there by allowing 4 cores with 100% utilization per container.
Furthermore cpuset is a more effective distribution mechanism when compared to cpu (that uses shares/quota).
add a comment |
Have a look at cpuset cgroup/container parameter. It lets you pin containers to specific cpu cores. In your case, you can specify only a single container to cores 0-3, and let no other container execute on the same core, there by allowing 4 cores with 100% utilization per container.
Furthermore cpuset is a more effective distribution mechanism when compared to cpu (that uses shares/quota).
Have a look at cpuset cgroup/container parameter. It lets you pin containers to specific cpu cores. In your case, you can specify only a single container to cores 0-3, and let no other container execute on the same core, there by allowing 4 cores with 100% utilization per container.
Furthermore cpuset is a more effective distribution mechanism when compared to cpu (that uses shares/quota).
answered Sep 6 '16 at 10:48
PrashanthPrashanth
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I updated the post
– mahmood
Mar 22 '16 at 14:29