Re: [PATCH V2 1/1] mm:improve the performance during fork

2021-04-05 Thread jun qian
Andrew Morton 于2021年3月31日周三 下午1:44写道： > > On Mon, 29 Mar 2021 20:36:35 +0800 qianjun.ker...@gmail.com wrote: > > > From: jun qian > > > > In our project, Many business delays come from fork, so > > we started looking for the reason why fork is time-consuming. > > I used the ftrace with

Re: [PATCH V2 1/1] mm:improve the performance during fork

2021-03-31 Thread Vlastimil Babka
On 3/31/21 2:11 PM, Vlastimil Babka wrote: > On 3/31/21 7:44 AM, Andrew Morton wrote: >> On Mon, 29 Mar 2021 20:36:35 +0800 qianjun.ker...@gmail.com wrote: >> >>> From: jun qian >>> >>> In our project, Many business delays come from fork, so >>> we started looking for the reason why fork is

Re: [PATCH V2 1/1] mm:improve the performance during fork

2021-03-31 Thread Vlastimil Babka
On 3/31/21 7:44 AM, Andrew Morton wrote: > On Mon, 29 Mar 2021 20:36:35 +0800 qianjun.ker...@gmail.com wrote: > >> From: jun qian >> >> In our project, Many business delays come from fork, so >> we started looking for the reason why fork is time-consuming. >> I used the ftrace with

Re: [PATCH V2 1/1] mm:improve the performance during fork

2021-03-30 Thread Andrew Morton
On Mon, 29 Mar 2021 20:36:35 +0800 qianjun.ker...@gmail.com wrote: > From: jun qian > > In our project, Many business delays come from fork, so > we started looking for the reason why fork is time-consuming. > I used the ftrace with function_graph to trace the fork, found > that the

[PATCH V2 1/1] mm:improve the performance during fork

2021-03-29 Thread qianjun . kernel
From: jun qian In our project, Many business delays come from fork, so we started looking for the reason why fork is time-consuming. I used the ftrace with function_graph to trace the fork, found that the vm_normal_page will be called tens of thousands and the execution time of this