From: Adrian Hunter <adrian.hunter@intel.com>
To: Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Ingo Molnar <mingo@redhat.com>,
linux-kernel@vger.kernel.org, Jiri Olsa <jolsa@kernel.org>,
alexey.budankov@linux.intel.com
Subject: Re: [PATCH 0/2] perf: Allow closing siblings' file descriptors
Date: Thu, 6 Aug 2020 09:15:08 +0300 [thread overview]
Message-ID: <32ad7700-3d4e-6c20-31c9-8b002fea5cbc@intel.com> (raw)
In-Reply-To: <20200708151635.81239-1-alexander.shishkin@linux.intel.com>
On 8/07/20 6:16 pm, Alexander Shishkin wrote:
> Hi guys,
>
> I've been looking at reducing the number of open file descriptors per perf
> session. If we retain one descriptor per event, in a large group they add
> up. At the same time, we're not actually using them for anything after the
> SET_OUTPUT and maybe SET_FILTER ioctls. So, this series is a stab at that.
I am wondering if instead we should be looking at creating a kernel API that
allows associating a multitude of tracepoints with a single event. Thoughts
anyone?
next prev parent reply other threads:[~2020-08-06 11:04 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-08 15:16 Alexander Shishkin
2020-07-08 15:16 ` [PATCH 1/2] perf: Add closing sibling events' " Alexander Shishkin
2020-08-06 8:35 ` peterz
2020-08-06 15:32 ` Andi Kleen
2020-08-10 13:57 ` Alexander Shishkin
2020-08-10 14:45 ` Andi Kleen
2020-08-10 20:36 ` Peter Zijlstra
2020-08-11 8:12 ` Alexey Budankov
2020-08-11 14:29 ` Andi Kleen
2020-08-11 14:47 ` David Laight
2020-08-11 18:03 ` Andi Kleen
2020-08-11 21:06 ` David Laight
2020-08-11 9:47 ` Alexander Shishkin
2020-08-11 14:34 ` Andi Kleen
2020-08-11 16:21 ` Alexander Shishkin
2020-08-11 18:02 ` Andi Kleen
2020-07-08 15:16 ` [PATCH 2/2] perf record: Support closing siblings' " Alexander Shishkin
2020-07-08 21:09 ` Jiri Olsa
2020-07-16 8:42 ` [perf record] d65f0cbbc6: perf-sanity-tests.Setup_struct_perf_event_attr.fail kernel test robot
2020-07-09 8:30 ` [PATCH 0/2] perf: Allow closing siblings' file descriptors Alexey Budankov
2020-08-06 6:15 ` Adrian Hunter [this message]
2020-08-06 8:37 ` peterz
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