Re: [RFC] scripts: Include postprocessing script for memory allocation tracing

> On Oct 21, 2016, at 3:08 AM, Michal Hocko wrote: > > Interesting. > $ cat /debug/tracing/available_tracers > function_graph preemptirqsoff preemptoff irqsoff function nop > > Do I have to configure anything specially? And if I do why isn't it any > better to simply add a start tracepoint and

Re: [RFC] scripts: Include postprocessing script for memory allocation tracing

On Thu 20-10-16 18:10:37, Janani Ravichandran wrote: > Michal, > > > On Oct 18, 2016, at 8:13 AM, Michal Hocko wrote: > > > >> > > > > yes, function_graph tracer will give you _some_ information but it will > > not have the context you are looking for, right? See the following > > example > >

Re: [RFC] scripts: Include postprocessing script for memory allocation tracing

Michal, > On Oct 18, 2016, at 8:13 AM, Michal Hocko wrote: > >> > > yes, function_graph tracer will give you _some_ information but it will > not have the context you are looking for, right? See the following > example > > -- > 0) x-www-b-22756 => x-t

Re: [RFC] scripts: Include postprocessing script for memory allocation tracing

On Mon 17-10-16 13:31:57, Janani Ravichandran wrote: > > > On Oct 17, 2016, at 1:24 PM, Janani Ravichandran > > wrote: > > > > > > On Sun, Oct 16, 2016 at 3:33 AM, Michal Hocko > > wrote: > > > > trace_mm_page_alloc will tell you details about the allocation, like >

Re: [RFC] scripts: Include postprocessing script for memory allocation tracing

On Sat 15-10-16 19:31:22, Janani Ravichandran wrote: > > > On Oct 11, 2016, at 10:43 AM, Janani Ravichandran > > wrote: > > > > Alright. I’ll add a starting tracepoint, change the script accordingly and > > send a v2. Thanks! > > > I looked at it again and I think that the context information

Re: [RFC] scripts: Include postprocessing script for memory allocation tracing

> On Oct 11, 2016, at 10:43 AM, Janani Ravichandran > wrote: > > Alright. I’ll add a starting tracepoint, change the script accordingly and > send a v2. Thanks! > I looked at it again and I think that the context information we need can be obtained from the tracepoint trace_mm_page_alloc in

Re: [RFC] scripts: Include postprocessing script for memory allocation tracing

Hi Michal, > Extremely sorry for the delayed response. > Then I really think that we need a starting trace point. I think that > having the full context information is really helpful in order to > understand latencies induced by allocations. > — Alright. I’ll add a starting tracepoint, change

Re: [RFC] scripts: Include postprocessing script for memory allocation tracing

On Fri 23-09-16 10:07:09, Michal Hocko wrote: > On Thu 22-09-16 11:30:36, Janani Ravichandran wrote: > > > > > On Sep 19, 2016, at 5:42 AM, Michal Hocko wrote: > > > > > > On Tue 13-09-16 14:04:49, Janani Ravichandran wrote: > > >> > > >>> On Sep 12, 2016, at 8:16 AM, Michal Hocko wrote: > > >

Re: [RFC] scripts: Include postprocessing script for memory allocation tracing

On Thu 22-09-16 11:30:36, Janani Ravichandran wrote: > > > On Sep 19, 2016, at 5:42 AM, Michal Hocko wrote: > > > > On Tue 13-09-16 14:04:49, Janani Ravichandran wrote: > >> > >>> On Sep 12, 2016, at 8:16 AM, Michal Hocko wrote: > >> > >> I’m using the function graph tracer to see how long >

Re: [RFC] scripts: Include postprocessing script for memory allocation tracing

> On Sep 19, 2016, at 5:42 AM, Michal Hocko wrote: > > On Tue 13-09-16 14:04:49, Janani Ravichandran wrote: >> >>> On Sep 12, 2016, at 8:16 AM, Michal Hocko wrote: >> >> I’m using the function graph tracer to see how long __alloc_pages_nodemask() >> took. > > How can you map the function gra

Re: [RFC] scripts: Include postprocessing script for memory allocation tracing

On Tue 13-09-16 14:04:49, Janani Ravichandran wrote: > > > On Sep 12, 2016, at 8:16 AM, Michal Hocko wrote: > > > > Hi, > > Hello Michal, > > > I am sorry I didn't follow up on the previous submission. > > That’s alright :) > > > I find this > > _really_ helpful. It is great that you could b

Re: [RFC] scripts: Include postprocessing script for memory allocation tracing

> On Sep 12, 2016, at 8:16 AM, Michal Hocko wrote: > > Hi, Hello Michal, > I am sorry I didn't follow up on the previous submission. That’s alright :) > I find this > _really_ helpful. It is great that you could build on top of existing > tracepoints but one thing is not entirely clear to me

Re: [RFC] scripts: Include postprocessing script for memory allocation tracing

Hi, I am sorry I didn't follow up on the previous submission. I find this _really_ helpful. It is great that you could build on top of existing tracepoints but one thing is not entirely clear to me. Without a begin marker in __alloc_pages_nodemask we cannot really tell how long the whole allocation