Re: [RFC PATCH 0/5] Support multiple pages allocation

2013-07-10 Thread Joonsoo Kim
On Wed, Jul 10, 2013 at 01:27:37PM +0200, Michal Hocko wrote: > On Wed 10-07-13 18:55:33, Joonsoo Kim wrote: > > On Wed, Jul 10, 2013 at 11:17:03AM +0200, Michal Hocko wrote: > > > On Wed 10-07-13 09:31:42, Joonsoo Kim wrote: > > > > On Thu, Jul 04, 2013 at 12:00:44PM +0200, Michal Hocko wrote: > [

Re: [RFC PATCH 0/5] Support multiple pages allocation

2013-07-10 Thread Michal Hocko
On Wed 10-07-13 18:55:33, Joonsoo Kim wrote: > On Wed, Jul 10, 2013 at 11:17:03AM +0200, Michal Hocko wrote: > > On Wed 10-07-13 09:31:42, Joonsoo Kim wrote: > > > On Thu, Jul 04, 2013 at 12:00:44PM +0200, Michal Hocko wrote: [...] > > > > Which benchmark you are using for this testing? > > > > >

Re: [RFC PATCH 0/5] Support multiple pages allocation

2013-07-10 Thread Joonsoo Kim
On Wed, Jul 10, 2013 at 09:20:27AM +0800, Zhang Yanfei wrote: > 于 2013/7/10 8:31, Joonsoo Kim 写道: > > On Thu, Jul 04, 2013 at 12:00:44PM +0200, Michal Hocko wrote: > >> On Thu 04-07-13 13:24:50, Joonsoo Kim wrote: > >>> On Thu, Jul 04, 2013 at 12:01:43AM +0800, Zhang Yanfei wrote: > On 07/03/2

Re: [RFC PATCH 0/5] Support multiple pages allocation

2013-07-10 Thread Joonsoo Kim
On Wed, Jul 10, 2013 at 11:17:03AM +0200, Michal Hocko wrote: > On Wed 10-07-13 09:31:42, Joonsoo Kim wrote: > > On Thu, Jul 04, 2013 at 12:00:44PM +0200, Michal Hocko wrote: > > > On Thu 04-07-13 13:24:50, Joonsoo Kim wrote: > > > > On Thu, Jul 04, 2013 at 12:01:43AM +0800, Zhang Yanfei wrote: > >

Re: [RFC PATCH 0/5] Support multiple pages allocation

2013-07-10 Thread Michal Hocko
On Wed 10-07-13 09:31:42, Joonsoo Kim wrote: > On Thu, Jul 04, 2013 at 12:00:44PM +0200, Michal Hocko wrote: > > On Thu 04-07-13 13:24:50, Joonsoo Kim wrote: > > > On Thu, Jul 04, 2013 at 12:01:43AM +0800, Zhang Yanfei wrote: > > > > On 07/03/2013 11:51 PM, Zhang Yanfei wrote: > > > > > On 07/03/20

Re: [RFC PATCH 0/5] Support multiple pages allocation

2013-07-09 Thread Zhang Yanfei
于 2013/7/10 8:31, Joonsoo Kim 写道: > On Thu, Jul 04, 2013 at 12:00:44PM +0200, Michal Hocko wrote: >> On Thu 04-07-13 13:24:50, Joonsoo Kim wrote: >>> On Thu, Jul 04, 2013 at 12:01:43AM +0800, Zhang Yanfei wrote: On 07/03/2013 11:51 PM, Zhang Yanfei wrote: > On 07/03/2013 11:28 PM, Michal H

Re: [RFC PATCH 0/5] Support multiple pages allocation

2013-07-09 Thread Joonsoo Kim
On Thu, Jul 04, 2013 at 12:00:44PM +0200, Michal Hocko wrote: > On Thu 04-07-13 13:24:50, Joonsoo Kim wrote: > > On Thu, Jul 04, 2013 at 12:01:43AM +0800, Zhang Yanfei wrote: > > > On 07/03/2013 11:51 PM, Zhang Yanfei wrote: > > > > On 07/03/2013 11:28 PM, Michal Hocko wrote: > > > >> On Wed 03-07-

Re: [RFC PATCH 0/5] Support multiple pages allocation

2013-07-04 Thread Michal Hocko
On Thu 04-07-13 13:24:50, Joonsoo Kim wrote: > On Thu, Jul 04, 2013 at 12:01:43AM +0800, Zhang Yanfei wrote: > > On 07/03/2013 11:51 PM, Zhang Yanfei wrote: > > > On 07/03/2013 11:28 PM, Michal Hocko wrote: > > >> On Wed 03-07-13 17:34:15, Joonsoo Kim wrote: > > >> [...] > > >>> For one page alloca

Re: [RFC PATCH 0/5] Support multiple pages allocation

2013-07-03 Thread Joonsoo Kim
On Thu, Jul 04, 2013 at 12:01:43AM +0800, Zhang Yanfei wrote: > On 07/03/2013 11:51 PM, Zhang Yanfei wrote: > > On 07/03/2013 11:28 PM, Michal Hocko wrote: > >> On Wed 03-07-13 17:34:15, Joonsoo Kim wrote: > >> [...] > >>> For one page allocation at once, this patchset makes allocator slower than >

Re: [RFC PATCH 0/5] Support multiple pages allocation

2013-07-03 Thread Zhang Yanfei
On 07/03/2013 11:51 PM, Zhang Yanfei wrote: > On 07/03/2013 11:28 PM, Michal Hocko wrote: >> On Wed 03-07-13 17:34:15, Joonsoo Kim wrote: >> [...] >>> For one page allocation at once, this patchset makes allocator slower than >>> before (-5%). >> >> Slowing down the most used path is a no-go. Wher

Re: [RFC PATCH 0/5] Support multiple pages allocation

2013-07-03 Thread Zhang Yanfei
On 07/03/2013 11:28 PM, Michal Hocko wrote: > On Wed 03-07-13 17:34:15, Joonsoo Kim wrote: > [...] >> For one page allocation at once, this patchset makes allocator slower than >> before (-5%). > > Slowing down the most used path is a no-go. Where does this slow down > come from? I guess, it mig

Re: [RFC PATCH 0/5] Support multiple pages allocation

2013-07-03 Thread Michal Hocko
On Wed 03-07-13 17:34:15, Joonsoo Kim wrote: [...] > For one page allocation at once, this patchset makes allocator slower than > before (-5%). Slowing down the most used path is a no-go. Where does this slow down come from? [...] -- Michal Hocko SUSE Labs -- To unsubscribe from this list: send

[RFC PATCH 0/5] Support multiple pages allocation

2013-07-03 Thread Joonsoo Kim
Hello. This patchset introduces multiple pages allocation feature to buddy allocator. Currently, there is no ability to allocate multiple pages at once, so we should invoke single page allocation logic repeatedly. This has some overheads like as overhead of function call with many arguments and ov