Re: [ast-users] [patch] vmalloc |mmap(MAP_ANON)| fixes for fragmentation issues (on Solaris) ... / was: Re: Severe performance regression between ksh 2010-03-05 and 2013-10-08

2013-12-09 Thread Roland Mainz
On Mon, Dec 9, 2013 at 11:08 PM, Glenn Fowler wrote: > On Mon, Dec 9, 2013 at 4:53 PM, Roland Mainz > wrote: [snip] >> 4. The patch removes one unneccesary |memset(p, 0, size)| which was >> touching pages and therefore allocating them > > if that memset(0) is in vmopen() then im not sure its unne

[ast-users] vmalloc memory allocations via shared memory ? / was: Re: [patch] vmalloc |mmap(MAP_ANON)| fixes for fragmentation issues (on Solaris) ... / was: Re: Severe performance regression between

2013-12-09 Thread Roland Mainz
On Mon, Dec 9, 2013 at 10:53 PM, Roland Mainz wrote: > On Fri, Dec 6, 2013 at 5:40 AM, Glenn Fowler wrote: >> On Thu, Dec 5, 2013 at 4:50 PM, Irek Szczesniak >> wrote: [snip] > Erm... Solaris (|__SunOS|) was once (pre-vmalloc-rewrite) "excempt" > from this functionality since it cannot overcommi

Re: [ast-users] [patch] vmalloc |mmap(MAP_ANON)| fixes for fragmentation issues (on Solaris) ... / was: Re: Severe performance regression between ksh 2010-03-05 and 2013-10-08

2013-12-09 Thread Glenn Fowler
if that memset(0) is in vmopen() then im not sure its unnecessary run these tests to check your patch with different sizes and with/without the memset(0) bin/package use cd builtin nmake test On Mon, Dec 9, 2013 at 4:53 PM, Roland Mainz wrote: > On Fri, Dec 6, 2013 at 5:40 AM, Glenn Fowler >

Re: [ast-users] Avoid clearing memory from |mmap(MAP_ANON)| ? / was: Re: Severe performance regression between ksh 2010-03-05 and 2013-10-08

2013-12-09 Thread Roland Mainz
On Sat, Dec 7, 2013 at 4:09 AM, Phong Vo wrote: > On Fri, Dec 6, 2013 at 10:18 AM, Glenn Fowler > wrote: >> On Thu, Dec 5, 2013 at 6:41 PM, Roland Mainz >> wrote: >>> On Wed, Dec 4, 2013 at 3:02 PM, Glenn Fowler >>> wrote: >>> > On Sun, Dec 1, 2013 at 4:58 PM, Lionel Cons >>> > wrote: [snip] >

[ast-users] [patch] vmalloc |mmap(MAP_ANON)| fixes for fragmentation issues (on Solaris) ... / was: Re: Severe performance regression between ksh 2010-03-05 and 2013-10-08

2013-12-09 Thread Roland Mainz
On Fri, Dec 6, 2013 at 5:40 AM, Glenn Fowler wrote: > On Thu, Dec 5, 2013 at 4:50 PM, Irek Szczesniak > wrote: >> >> On Wed, Dec 4, 2013 at 3:02 PM, Glenn Fowler >> wrote: >> > On Sun, Dec 1, 2013 at 4:58 PM, Lionel Cons >> > wrote: >> >> >> >> On 1 December 2013 17:26, Glenn Fowler >> >> wrot