Re: [LKP] [timer] 17cdf560f27: +4.0% boot-meminfo.VmallocUsed
On Fri, Apr 03, 2015 at 09:03:48AM +0800, huang ying wrote:
> On Thu, Apr 2, 2015 at 3:54 PM, Peter Zijlstra wrote:
>
> > On Thu, Apr 02, 2015 at 09:06:09AM +0800, Huang Ying wrote:
> > > FYI, we noticed the below changes on
> > >
> > > git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/linux.git
> > timer/alloc_tvec_statically
> > > commit 17cdf560f2727f687ab159707d0aa591f8a2f82d ("timer: Allocate
> > per-cpu tvec_base's statically")
> > >
> > >
> > > testbox/testcase/testparams: lkp-sbx04/boot/performance-1
> > >
> > > c5e77f5216abdd1d 17cdf560f2727f687ab159707d
> > > --
> > > %stddev %change %stddev
> > > \ |\
> > > 410996 ± 0% +4.0% 427412 ± 0% boot-meminfo.VmallocUsed
> > >
> > > testbox/testcase/testparams: wsm/boot/performance-1
> > >
> > > c5e77f5216abdd1d 17cdf560f2727f687ab159707d
> > > --
> > > 85712 ± 0% +2.4% 87772 ± 0% boot-meminfo.VmallocUsed
> > >
> > > testbox/testcase/testparams: lkp-snb01/boot/performance-1
> > >
> > > c5e77f5216abdd1d 17cdf560f2727f687ab159707d
> > > --
> > > 447001 ± 0% -1.0% 442558 ± 0% boot-slabinfo.num_objs
> > > 125616 ± 5% -13.5% 108720 ± 4% boot-meminfo.DirectMap4k
> > > 347196 ± 0% +4.7% 363612 ± 0% boot-meminfo.VmallocUsed
> > >
> >
> > well, duh.. it changes a dynamic allocation into a static per-cpu one.
> > What did you expect?
> >
>
> Just FYI. This may be the expected behavior. If so, you have a third
> party test report.
Ah ok. I thought you thought it was a bug/regression.
Thanks
--
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: [LKP] [timer] 17cdf560f27: +4.0% boot-meminfo.VmallocUsed
On Fri, Apr 03, 2015 at 09:03:48AM +0800, huang ying wrote:
On Thu, Apr 2, 2015 at 3:54 PM, Peter Zijlstra pet...@infradead.org wrote:
On Thu, Apr 02, 2015 at 09:06:09AM +0800, Huang Ying wrote:
FYI, we noticed the below changes on
git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/linux.git
timer/alloc_tvec_statically
commit 17cdf560f2727f687ab159707d0aa591f8a2f82d (timer: Allocate
per-cpu tvec_base's statically)
testbox/testcase/testparams: lkp-sbx04/boot/performance-1
c5e77f5216abdd1d 17cdf560f2727f687ab159707d
--
%stddev %change %stddev
\ |\
410996 ± 0% +4.0% 427412 ± 0% boot-meminfo.VmallocUsed
testbox/testcase/testparams: wsm/boot/performance-1
c5e77f5216abdd1d 17cdf560f2727f687ab159707d
--
85712 ± 0% +2.4% 87772 ± 0% boot-meminfo.VmallocUsed
testbox/testcase/testparams: lkp-snb01/boot/performance-1
c5e77f5216abdd1d 17cdf560f2727f687ab159707d
--
447001 ± 0% -1.0% 442558 ± 0% boot-slabinfo.num_objs
125616 ± 5% -13.5% 108720 ± 4% boot-meminfo.DirectMap4k
347196 ± 0% +4.7% 363612 ± 0% boot-meminfo.VmallocUsed
well, duh.. it changes a dynamic allocation into a static per-cpu one.
What did you expect?
Just FYI. This may be the expected behavior. If so, you have a third
party test report.
Ah ok. I thought you thought it was a bug/regression.
Thanks
--
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: [LKP] [timer] 17cdf560f27: +4.0% boot-meminfo.VmallocUsed
On Thu, Apr 02, 2015 at 09:06:09AM +0800, Huang Ying wrote:
> FYI, we noticed the below changes on
>
> git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/linux.git
> timer/alloc_tvec_statically
> commit 17cdf560f2727f687ab159707d0aa591f8a2f82d ("timer: Allocate per-cpu
> tvec_base's statically")
>
>
> testbox/testcase/testparams: lkp-sbx04/boot/performance-1
>
> c5e77f5216abdd1d 17cdf560f2727f687ab159707d
> --
> %stddev %change %stddev
> \ |\
> 410996 ± 0% +4.0% 427412 ± 0% boot-meminfo.VmallocUsed
>
> testbox/testcase/testparams: wsm/boot/performance-1
>
> c5e77f5216abdd1d 17cdf560f2727f687ab159707d
> --
> 85712 ± 0% +2.4% 87772 ± 0% boot-meminfo.VmallocUsed
>
> testbox/testcase/testparams: lkp-snb01/boot/performance-1
>
> c5e77f5216abdd1d 17cdf560f2727f687ab159707d
> --
> 447001 ± 0% -1.0% 442558 ± 0% boot-slabinfo.num_objs
> 125616 ± 5% -13.5% 108720 ± 4% boot-meminfo.DirectMap4k
> 347196 ± 0% +4.7% 363612 ± 0% boot-meminfo.VmallocUsed
>
well, duh.. it changes a dynamic allocation into a static per-cpu one.
What did you expect?
--
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: [LKP] [timer] 17cdf560f27: +4.0% boot-meminfo.VmallocUsed
On Thu, Apr 02, 2015 at 09:06:09AM +0800, Huang Ying wrote: FYI, we noticed the below changes on git://git.kernel.org/pub/scm/linux/kernel/git/vireshk/linux.git timer/alloc_tvec_statically commit 17cdf560f2727f687ab159707d0aa591f8a2f82d (timer: Allocate per-cpu tvec_base's statically) testbox/testcase/testparams: lkp-sbx04/boot/performance-1 c5e77f5216abdd1d 17cdf560f2727f687ab159707d -- %stddev %change %stddev \ |\ 410996 ± 0% +4.0% 427412 ± 0% boot-meminfo.VmallocUsed testbox/testcase/testparams: wsm/boot/performance-1 c5e77f5216abdd1d 17cdf560f2727f687ab159707d -- 85712 ± 0% +2.4% 87772 ± 0% boot-meminfo.VmallocUsed testbox/testcase/testparams: lkp-snb01/boot/performance-1 c5e77f5216abdd1d 17cdf560f2727f687ab159707d -- 447001 ± 0% -1.0% 442558 ± 0% boot-slabinfo.num_objs 125616 ± 5% -13.5% 108720 ± 4% boot-meminfo.DirectMap4k 347196 ± 0% +4.7% 363612 ± 0% boot-meminfo.VmallocUsed well, duh.. it changes a dynamic allocation into a static per-cpu one. What did you expect? -- 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/
