Messages in this thread | | | Date | Thu, 7 Nov 2013 17:59:37 -0500 | From | Steven Rostedt <> | Subject | Re: [PATCH 3/4] printk: Defer printing to irq work when we printed too much |
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On Thu, 7 Nov 2013 23:43:52 +0100 Frederic Weisbecker <fweisbec@gmail.com> wrote:
> When a message takes tens of seconds to be printed, it usually means > we are in trouble somehow :) > I wonder what printk source can trigger such a high volume.
The only ones that I'm aware of is the prints from sysrq. Which includes a ftrace_dump as well. These have caused issues in the past, but usually I do them on boxes that I reboot afterward anyway.
-- Steve
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