Re: [PATCH] mm, vmacache: Add kconfig VMACACHE_SHIFT

2015-01-23 Thread Sasha Levin
On 01/23/2015 12:14 AM, WANG Chao wrote: > On 01/22/15 at 11:22am, Rik van Riel wrote: >> > On 01/22/2015 11:19 AM, Davidlohr Bueso wrote: >>> > > On Thu, 2015-01-22 at 15:57 +0800, WANG Chao wrote: > >> Hi, Davidlohr > >> > >> On 01/21/15 at 11:46pm, Davidlohr Bueso wrote: > >

Re: [PATCH] mm, vmacache: Add kconfig VMACACHE_SHIFT

2015-01-23 Thread Sasha Levin
On 01/23/2015 12:14 AM, WANG Chao wrote: On 01/22/15 at 11:22am, Rik van Riel wrote: On 01/22/2015 11:19 AM, Davidlohr Bueso wrote: On Thu, 2015-01-22 at 15:57 +0800, WANG Chao wrote: Hi, Davidlohr On 01/21/15 at 11:46pm, Davidlohr Bueso wrote: On Thu, 2015-01-22 at 14:29 +0800,

Re: [PATCH] mm, vmacache: Add kconfig VMACACHE_SHIFT

2015-01-22 Thread WANG Chao
On 01/22/15 at 11:22am, Rik van Riel wrote: > On 01/22/2015 11:19 AM, Davidlohr Bueso wrote: > > On Thu, 2015-01-22 at 15:57 +0800, WANG Chao wrote: > >> Hi, Davidlohr > >> > >> On 01/21/15 at 11:46pm, Davidlohr Bueso wrote: > >>> On Thu, 2015-01-22 at 14:29 +0800, WANG Chao wrote: > Add a

Re: [PATCH] mm, vmacache: Add kconfig VMACACHE_SHIFT

2015-01-22 Thread Rik van Riel
On 01/22/2015 11:19 AM, Davidlohr Bueso wrote: > On Thu, 2015-01-22 at 15:57 +0800, WANG Chao wrote: >> Hi, Davidlohr >> >> On 01/21/15 at 11:46pm, Davidlohr Bueso wrote: >>> On Thu, 2015-01-22 at 14:29 +0800, WANG Chao wrote: Add a new kconfig option VMACACHE_SHIFT (as a power of 2) to

Re: [PATCH] mm, vmacache: Add kconfig VMACACHE_SHIFT

2015-01-22 Thread Davidlohr Bueso
On Thu, 2015-01-22 at 15:57 +0800, WANG Chao wrote: > Hi, Davidlohr > > On 01/21/15 at 11:46pm, Davidlohr Bueso wrote: > > On Thu, 2015-01-22 at 14:29 +0800, WANG Chao wrote: > > > Add a new kconfig option VMACACHE_SHIFT (as a power of 2) to specify the > > > number of slots vma cache has for

Re: [PATCH] mm, vmacache: Add kconfig VMACACHE_SHIFT

2015-01-22 Thread Vlastimil Babka
On 01/22/2015 07:29 AM, WANG Chao wrote: Add a new kconfig option VMACACHE_SHIFT (as a power of 2) to specify the number of slots vma cache has for each thread. Range is chosen 0-4 (1-16 slots) to consider both overhead and performance penalty. Default is 2 One could say that overhead and

Re: [PATCH] mm, vmacache: Add kconfig VMACACHE_SHIFT

2015-01-22 Thread Vlastimil Babka
On 01/22/2015 07:29 AM, WANG Chao wrote: Add a new kconfig option VMACACHE_SHIFT (as a power of 2) to specify the number of slots vma cache has for each thread. Range is chosen 0-4 (1-16 slots) to consider both overhead and performance penalty. Default is 2 One could say that overhead and

Re: [PATCH] mm, vmacache: Add kconfig VMACACHE_SHIFT

2015-01-22 Thread Davidlohr Bueso
On Thu, 2015-01-22 at 15:57 +0800, WANG Chao wrote: Hi, Davidlohr On 01/21/15 at 11:46pm, Davidlohr Bueso wrote: On Thu, 2015-01-22 at 14:29 +0800, WANG Chao wrote: Add a new kconfig option VMACACHE_SHIFT (as a power of 2) to specify the number of slots vma cache has for each thread.

Re: [PATCH] mm, vmacache: Add kconfig VMACACHE_SHIFT

2015-01-22 Thread Rik van Riel
On 01/22/2015 11:19 AM, Davidlohr Bueso wrote: On Thu, 2015-01-22 at 15:57 +0800, WANG Chao wrote: Hi, Davidlohr On 01/21/15 at 11:46pm, Davidlohr Bueso wrote: On Thu, 2015-01-22 at 14:29 +0800, WANG Chao wrote: Add a new kconfig option VMACACHE_SHIFT (as a power of 2) to specify the number

Re: [PATCH] mm, vmacache: Add kconfig VMACACHE_SHIFT

2015-01-22 Thread WANG Chao
On 01/22/15 at 11:22am, Rik van Riel wrote: On 01/22/2015 11:19 AM, Davidlohr Bueso wrote: On Thu, 2015-01-22 at 15:57 +0800, WANG Chao wrote: Hi, Davidlohr On 01/21/15 at 11:46pm, Davidlohr Bueso wrote: On Thu, 2015-01-22 at 14:29 +0800, WANG Chao wrote: Add a new kconfig option

Re: [PATCH] mm, vmacache: Add kconfig VMACACHE_SHIFT

2015-01-21 Thread WANG Chao
Hi, Davidlohr On 01/21/15 at 11:46pm, Davidlohr Bueso wrote: > On Thu, 2015-01-22 at 14:29 +0800, WANG Chao wrote: > > Add a new kconfig option VMACACHE_SHIFT (as a power of 2) to specify the > > number of slots vma cache has for each thread. Range is chosen 0-4 (1-16 > > slots) to consider both

Re: [PATCH] mm, vmacache: Add kconfig VMACACHE_SHIFT

2015-01-21 Thread Davidlohr Bueso
On Thu, 2015-01-22 at 14:29 +0800, WANG Chao wrote: > Add a new kconfig option VMACACHE_SHIFT (as a power of 2) to specify the > number of slots vma cache has for each thread. Range is chosen 0-4 (1-16 > slots) to consider both overhead and performance penalty. Default is 2 > (4 slots) as it

[PATCH] mm, vmacache: Add kconfig VMACACHE_SHIFT

2015-01-21 Thread WANG Chao
Add a new kconfig option VMACACHE_SHIFT (as a power of 2) to specify the number of slots vma cache has for each thread. Range is chosen 0-4 (1-16 slots) to consider both overhead and performance penalty. Default is 2 (4 slots) as it originally is, which provides good enough balance.

[PATCH] mm, vmacache: Add kconfig VMACACHE_SHIFT

2015-01-21 Thread WANG Chao
Add a new kconfig option VMACACHE_SHIFT (as a power of 2) to specify the number of slots vma cache has for each thread. Range is chosen 0-4 (1-16 slots) to consider both overhead and performance penalty. Default is 2 (4 slots) as it originally is, which provides good enough balance.

Re: [PATCH] mm, vmacache: Add kconfig VMACACHE_SHIFT

2015-01-21 Thread Davidlohr Bueso
On Thu, 2015-01-22 at 14:29 +0800, WANG Chao wrote: Add a new kconfig option VMACACHE_SHIFT (as a power of 2) to specify the number of slots vma cache has for each thread. Range is chosen 0-4 (1-16 slots) to consider both overhead and performance penalty. Default is 2 (4 slots) as it

Re: [PATCH] mm, vmacache: Add kconfig VMACACHE_SHIFT

2015-01-21 Thread WANG Chao
Hi, Davidlohr On 01/21/15 at 11:46pm, Davidlohr Bueso wrote: On Thu, 2015-01-22 at 14:29 +0800, WANG Chao wrote: Add a new kconfig option VMACACHE_SHIFT (as a power of 2) to specify the number of slots vma cache has for each thread. Range is chosen 0-4 (1-16 slots) to consider both