Re: [PATCH 0/3] sched, timer: Improve scalability of itimers
* Linus Torvalds wrote: > On Tue, Apr 14, 2015 at 4:09 PM, Jason Low wrote: > > This patchset improves the scalability of itimers, thread_group_cputimer > > and addresses a performance issue we found while running a database > > workload where more than 30% of total time is spent in the kernel > > trying to acquire the thread_group_cputimer spinlock. > > I'm ok with this series, but I'm going to assume that I'll get it > through the scheduler tree. Ingo? Yeah, will pick them up! Thanks, Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 0/3] sched, timer: Improve scalability of itimers
* Linus Torvalds torva...@linux-foundation.org wrote: On Tue, Apr 14, 2015 at 4:09 PM, Jason Low jason.l...@hp.com wrote: This patchset improves the scalability of itimers, thread_group_cputimer and addresses a performance issue we found while running a database workload where more than 30% of total time is spent in the kernel trying to acquire the thread_group_cputimer spinlock. I'm ok with this series, but I'm going to assume that I'll get it through the scheduler tree. Ingo? Yeah, will pick them up! Thanks, Ingo -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 0/3] sched, timer: Improve scalability of itimers
On Tue, Apr 14, 2015 at 4:09 PM, Jason Low wrote: > This patchset improves the scalability of itimers, thread_group_cputimer > and addresses a performance issue we found while running a database > workload where more than 30% of total time is spent in the kernel > trying to acquire the thread_group_cputimer spinlock. I'm ok with this series, but I'm going to assume that I'll get it through the scheduler tree. Ingo? Linus -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH 0/3] sched, timer: Improve scalability of itimers
This patchset improves the scalability of itimers, thread_group_cputimer and addresses a performance issue we found while running a database workload where more than 30% of total time is spent in the kernel trying to acquire the thread_group_cputimer spinlock. While we're modifying sched and timer, patch 1 also updates all existing usages of ACCESS_ONCE with the new READ_ONCE and WRITE_ONCE APIs in those areas. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 0/3] sched, timer: Improve scalability of itimers
On Tue, Apr 14, 2015 at 4:09 PM, Jason Low jason.l...@hp.com wrote: This patchset improves the scalability of itimers, thread_group_cputimer and addresses a performance issue we found while running a database workload where more than 30% of total time is spent in the kernel trying to acquire the thread_group_cputimer spinlock. I'm ok with this series, but I'm going to assume that I'll get it through the scheduler tree. Ingo? Linus -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH 0/3] sched, timer: Improve scalability of itimers
This patchset improves the scalability of itimers, thread_group_cputimer and addresses a performance issue we found while running a database workload where more than 30% of total time is spent in the kernel trying to acquire the thread_group_cputimer spinlock. While we're modifying sched and timer, patch 1 also updates all existing usages of ACCESS_ONCE with the new READ_ONCE and WRITE_ONCE APIs in those areas. -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
