On 02/02/2015 05:18 PM, Mel Gorman wrote:
> On Mon, Feb 02, 2015 at 02:05:06PM -0800, Andrew Morton wrote:
>> On Mon, 2 Feb 2015 16:55:25 + Mel Gorman wrote:
>>
>>> glibc malloc changed behaviour in glibc 2.10 to have per-thread arenas
>>> instead of creating new areans if the existing ones we
On Tue, Feb 03, 2015 at 12:47:56PM +0200, Kirill A. Shutemov wrote:
> On Tue, Feb 03, 2015 at 09:47:18AM +, Mel Gorman wrote:
> > On Mon, Feb 02, 2015 at 02:22:36PM -0800, Dave Hansen wrote:
> > > On 02/02/2015 08:55 AM, Mel Gorman wrote:
> > > > This patch identifies when a thread is frequentl
On Mon, Feb 02, 2015 at 02:35:41PM -0800, Andrew Morton wrote:
> On Mon, 2 Feb 2015 22:18:24 + Mel Gorman wrote:
>
> > > Is there something
> > > preventing this from being addressed within glibc?
> >
> > I doubt it other than I expect they'll punt it back and blame either the
> > applicati
On Tue, Feb 03, 2015 at 09:47:18AM +, Mel Gorman wrote:
> On Mon, Feb 02, 2015 at 02:22:36PM -0800, Dave Hansen wrote:
> > On 02/02/2015 08:55 AM, Mel Gorman wrote:
> > > This patch identifies when a thread is frequently calling MADV_DONTNEED
> > > on the same region of memory and starts ignori
On Mon, Feb 02, 2015 at 02:22:36PM -0800, Dave Hansen wrote:
> On 02/02/2015 08:55 AM, Mel Gorman wrote:
> > This patch identifies when a thread is frequently calling MADV_DONTNEED
> > on the same region of memory and starts ignoring the hint. On an 8-core
> > single-socket machine this was the imp
On Mon, 2015-02-02 at 14:35 -0800, Andrew Morton wrote:
> On Mon, 2 Feb 2015 22:18:24 + Mel Gorman wrote:
>
> > > Is there something
> > > preventing this from being addressed within glibc?
> >
> > I doubt it other than I expect they'll punt it back and blame either the
> > application for
On Mon, 2 Feb 2015 22:18:24 + Mel Gorman wrote:
> > Is there something
> > preventing this from being addressed within glibc?
>
> I doubt it other than I expect they'll punt it back and blame either the
> application for being stupid or the kernel for being slow.
*Is* the application being
On 02/02/2015 08:55 AM, Mel Gorman wrote:
> This patch identifies when a thread is frequently calling MADV_DONTNEED
> on the same region of memory and starts ignoring the hint. On an 8-core
> single-socket machine this was the impact on ebizzy using glibc 2.19.
The manpage, at least, claims that w
On Mon, Feb 02, 2015 at 02:05:06PM -0800, Andrew Morton wrote:
> On Mon, 2 Feb 2015 16:55:25 + Mel Gorman wrote:
>
> > glibc malloc changed behaviour in glibc 2.10 to have per-thread arenas
> > instead of creating new areans if the existing ones were contended.
> > The decision appears to hav
On Mon, 2 Feb 2015 16:55:25 + Mel Gorman wrote:
> glibc malloc changed behaviour in glibc 2.10 to have per-thread arenas
> instead of creating new areans if the existing ones were contended.
> The decision appears to have been made so the allocator scales better but the
> downside is that mad
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