linux-kernel - Re: [PATCH v1] trace-cmd: introduce --initital-delay for record command

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Message-ID: <20171218164308.658924b8@gandalf.local.home>
Date:   Mon, 18 Dec 2017 16:43:08 -0500
From:   Steven Rostedt <rostedt@...dmis.org>
To:     David Hildenbrand <david@...hat.com>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Trace Devel <linux-trace-devel@...r.kernel.org>
Subject: Re: [PATCH v1] trace-cmd: introduce --initital-delay for record
 command

On Mon, 18 Dec 2017 21:56:33 +0100
David Hildenbrand <david@...hat.com> wrote:
 
> I'll have a try tomorrow if I I''lose events with 20MB buffers per CPU
> when recording more than 60 seconds (on a very active system with
> mentioned scheduler rtaces being turned on).
>

Another option is to add a '-w' option to record that causes the
recorders (what reads the data) to "wait" or force it to sleep even if
it did read something. I'm fine with that.

-- Steve