Re: [PATCH 11/33] task containersv11 make cpusets a client of containers

Paul M wrote: > I didn't notice any performance hit on a pure allocate/free memory > benchmark relative to non-cgroup cpusets. Good. -- I won't rest till it's the best ... Programmer, Linux Scalability Paul Jackson <[EMAIL PROTECTED]>

Re: [PATCH 11/33] task containersv11 make cpusets a client of containers

Paul M wrote: > It's two constant-indexed dereferences *in total*, compared to a > single constant-indexed dereference in the pre-cgroup case. Ok - the C expression is longer and I didn't realize how little difference it made in the end (the executing code.) Good - thanks. --

Re: [PATCH 11/33] task containersv11 make cpusets a client of containers

On 10/4/07, Paul Jackson <[EMAIL PROTECTED]> wrote: > Paul M, > > This snippet from the memory allocation hot path worries me a bit. > > Once per memory page allocation, we go through here, needing to peak inside > the current tasks cpuset to see if it has changed (it's 'mems_generation' > value

Re: [PATCH 11/33] task containersv11 make cpusets a client of containers

Paul M, This snippet from the memory allocation hot path worries me a bit. Once per memory page allocation, we go through here, needing to peak inside the current tasks cpuset to see if it has changed (it's 'mems_generation' value doesn't match the last seen value we have stashed in the task

Re: [PATCH 11/33] task containersv11 make cpusets a client of containers

Paul M, This snippet from the memory allocation hot path worries me a bit. Once per memory page allocation, we go through here, needing to peak inside the current tasks cpuset to see if it has changed (it's 'mems_generation' value doesn't match the last seen value we have stashed in the task

Re: [PATCH 11/33] task containersv11 make cpusets a client of containers

On 10/4/07, Paul Jackson [EMAIL PROTECTED] wrote: Paul M, This snippet from the memory allocation hot path worries me a bit. Once per memory page allocation, we go through here, needing to peak inside the current tasks cpuset to see if it has changed (it's 'mems_generation' value doesn't

Re: [PATCH 11/33] task containersv11 make cpusets a client of containers

Paul M wrote: It's two constant-indexed dereferences *in total*, compared to a single constant-indexed dereference in the pre-cgroup case. Ok - the C expression is longer and I didn't realize how little difference it made in the end (the executing code.) Good - thanks. -- I

Re: [PATCH 11/33] task containersv11 make cpusets a client of containers

Paul M wrote: I didn't notice any performance hit on a pure allocate/free memory benchmark relative to non-cgroup cpusets. Good. -- I won't rest till it's the best ... Programmer, Linux Scalability Paul Jackson [EMAIL PROTECTED]