From: Tom Zanussi <tom.zanussi@linux.intel.com>
To: Daniel Wagner <daniel.wagner@bmw-carit.de>
Cc: Steven Rostedt <rostedt@goodmis.org>,
Ingo Molnar <mingo@redhat.com>, Carsten Emde <C.Emde@osadl.org>,
linux-rt-users@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFD 5/5] tracing: Add trace_irqsoff tracepoints
Date: Thu, 30 Apr 2015 21:14:52 -0500 [thread overview]
Message-ID: <1430446492.17922.32.camel@picadillo> (raw)
In-Reply-To: <1430388385-29558-6-git-send-email-daniel.wagner@bmw-carit.de>
On Thu, 2015-04-30 at 12:06 +0200, Daniel Wagner wrote:
> Finally we place a few tracepoint at the end of critical section. With
> the hist trigger in place we can generate the plots.
>
> There are a few drawbacks compared to the latency_hist.patch [1]
>
> The latency plots contain the values from all CPUs. In theory you
> can also filter with something like
>
> 'hist:key=latency.bucket:val=hitcount:sort=latency if cpu==0'
>
> but I haven't got this working. I didn't spend much time figuring out
> why this doesn't work. Even if the above is working you still
I think it doesn't work because the tracepoint doesn't actually have a
'cpu' field to use in the filter...
Tom
next prev parent reply other threads:[~2015-05-01 2:15 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-30 10:06 [RFD 0/5] Add latency histogram Daniel Wagner
2015-04-30 10:06 ` [RFD 1/5] tracing: 'hist' triggers Daniel Wagner
2015-04-30 10:06 ` [RFD 2/5] tracing: Add support to sort on the key Daniel Wagner
2015-05-01 2:02 ` Tom Zanussi
2015-04-30 10:06 ` [RFD 3/5] tracing: Add option to quantize key values Daniel Wagner
2015-05-01 2:12 ` Tom Zanussi
2015-04-30 10:06 ` [RFD 4/5] tracing: Deference pointers without RCU checks Daniel Wagner
2015-04-30 10:06 ` [RFD 5/5] tracing: Add trace_irqsoff tracepoints Daniel Wagner
2015-05-01 2:14 ` Tom Zanussi [this message]
2015-05-01 2:54 ` Steven Rostedt
2015-05-01 9:23 ` Daniel Wagner
2015-05-04 14:05 ` Daniel Wagner
2015-05-04 15:41 ` Daniel Wagner
2015-05-06 6:31 ` Daniel Wagner
2015-05-01 1:52 ` [RFD 0/5] Add latency histogram Tom Zanussi
2015-05-01 9:22 ` Daniel Wagner
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1430446492.17922.32.camel@picadillo \
--to=tom.zanussi@linux.intel.com \
--cc=C.Emde@osadl.org \
--cc=daniel.wagner@bmw-carit.de \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rt-users@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=rostedt@goodmis.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).