Re: [Libhugetlbfs-devel] [PATCH] stack remapping

2007-11-30 Thread Nishanth Aravamudan
On 30.11.2007 [17:30:06 -0600], Andrew Hastings wrote: > Nishanth Aravamudan wrote: >> On 27.11.2007 [16:51:26 -0600], Andrew Hastings wrote: >>> +3. Set HUGETLB_STACK= or HUGETLB_STACK=yes >>> + This enables the hugepage stack feature, instructing libhugetlbfs >>> + to remap the main program sta

Re: [Libhugetlbfs-devel] [PATCH] stack remapping

2007-11-30 Thread Andrew Hastings
Nishanth Aravamudan wrote: > On 27.11.2007 [16:51:26 -0600], Andrew Hastings wrote: >> +3. Set HUGETLB_STACK= or HUGETLB_STACK=yes >> + This enables the hugepage stack feature, instructing libhugetlbfs >> + to remap the main program stack with a hugepage version. Setting >> + HUGETLB_STACK=yes

Re: [Libhugetlbfs-devel] [PATCH] stack remapping

2007-11-30 Thread Nishanth Aravamudan
On 30.11.2007 [10:40:23 -0600], Steve Fox wrote: > On Wed, 2007-11-28 at 10:02 -0800, Nishanth Aravamudan wrote: > > I wonder, what kind of performance impact (positively, that is), this > > patch has? > > I ran a quick (3 pass) test on a Power4 box using the SpecCPU06 bwaves > test. This test has

Re: [Libhugetlbfs-devel] [PATCH] stack remapping

2007-11-30 Thread Steve Fox
On Wed, 2007-11-28 at 10:02 -0800, Nishanth Aravamudan wrote: > I wonder, what kind of performance impact (positively, that is), this > patch has? I ran a quick (3 pass) test on a Power4 box using the SpecCPU06 bwaves test. This test has a ~1GB stack size. The result was an average of 2.1% improve