linux-kernel - Re: [PATCH 00/10] perf/uprobe: Optimize uprobes

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Message-Id: <20240709075651.122204f1358f9f78d1e64b62@kernel.org>
Date: Tue, 9 Jul 2024 07:56:51 +0900
From: Masami Hiramatsu (Google) <mhiramat@...nel.org>
To: Peter Zijlstra <peterz@...radead.org>
Cc: mingo@...nel.org, andrii@...nel.org, linux-kernel@...r.kernel.org,
 rostedt@...dmis.org, mhiramat@...nel.org, oleg@...hat.com,
 jolsa@...nel.org, clm@...a.com, paulmck@...nel.org
Subject: Re: [PATCH 00/10] perf/uprobe: Optimize uprobes

On Mon, 08 Jul 2024 11:12:41 +0200
Peter Zijlstra <peterz@...radead.org> wrote:

> Hi!
> 
> These patches implement the (S)RCU based proposal to optimize uprobes.
> 
> On my c^Htrusty old IVB-EP -- where each (of the 40) CPU calls 'func' in a
> tight loop:
> 
>   perf probe -x ./uprobes test=func
>   perf stat -ae probe_uprobe:test  -- sleep 1
> 
>   perf probe -x ./uprobes test=func%return
>   perf stat -ae probe_uprobe:test__return -- sleep 1
> 
> PRE:
> 
>   4,038,804      probe_uprobe:test
>   2,356,275      probe_uprobe:test__return
> 
> POST:
> 
>   7,216,579      probe_uprobe:test
>   6,744,786      probe_uprobe:test__return
> 

Good results! So this is another series of Andrii's batch register?
(but maybe it becomes simpler)

Thank you,

> 
> Patches also available here:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git perf/uprobes
> 
> 


-- 
Masami Hiramatsu (Google) <mhiramat@...nel.org>