From: Frederic Weisbecker <fweisbec@gmail.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Harald Gustafsson <hgu1972@gmail.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
Harald Gustafsson <harald.gustafsson@ericsson.com>,
Song Yuan <song.yuan@ericsson.com>,
Steven Rostedt <rostedt@goodmis.org>
Subject: Re: perf events over (net) console?
Date: Thu, 9 Sep 2010 13:40:59 +0200 [thread overview]
Message-ID: <20100909114057.GB5267@nowhere> (raw)
In-Reply-To: <1284032142.402.5.camel@laptop>
On Thu, Sep 09, 2010 at 01:35:42PM +0200, Peter Zijlstra wrote:
> On Thu, 2010-09-09 at 13:29 +0200, Frederic Weisbecker wrote:
> > But if we bring the splice support,
>
> Even simply write() from the mmap() buffer isn't terribly expensive. But
> yeah, once we fix splice not to always copy that could be even better.
>
> Splice() is on the todo list, but it needs significant user-interface
> work and I'm rather busy..
Yeah sure, that wasn't a citicism, just an idea on how that kind of
minimal userspace noise state can be achieved in the future :)
next prev parent reply other threads:[~2010-09-09 11:40 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-09 11:06 perf events over (net) console? Harald Gustafsson
2010-09-09 11:19 ` Peter Zijlstra
2010-09-09 11:29 ` Frederic Weisbecker
2010-09-09 11:35 ` Peter Zijlstra
2010-09-09 11:40 ` Frederic Weisbecker [this message]
2010-09-09 11:40 ` Ingo Molnar
2010-09-09 12:31 ` Harald Gustafsson
2010-09-09 12:47 ` Peter Zijlstra
2010-09-09 13:07 ` Ingo Molnar
2010-09-09 13:21 ` Frederic Weisbecker
2010-09-09 14:41 ` Arnaldo Carvalho de Melo
2010-09-09 17:42 ` Harald Gustafsson
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