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Re: [Qemu-discuss] [Qemu-devel] Libvirt add ftrace option

From: Daniel P. Berrange
Subject: Re: [Qemu-discuss] [Qemu-devel] Libvirt add ftrace option
Date: Wed, 17 Aug 2016 09:56:19 +0100
User-agent: Mutt/1.6.2 (2016-07-01)

On Wed, Aug 17, 2016 at 09:43:10AM +0530, Gadre Nayan wrote:
> Ok. so I will then shift to using system tap, Are the timestamps
> generated for events compatible with the ftrace timestamps? so that I
> can still merge the traces using TSC_OFFSET.

I'm not sure what timestamps exactl you're using with ftrace, but systemtap
provides a range of time functions. See man pages for
function::get_cycles, function::jiffies, function::HZ, function::gettimeofday_us
function::ctime and more.

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