From: "Trilok Soni" <soni.trilok@gmail.com>
To: "Mathieu Desnoyers" <mathieu.desnoyers@polymtl.ca>
Cc: linux-kernel@vger.kernel.org, ltt-dev@lists.casi.polymtl.ca
Subject: keypad/touchscreen driver events latencies using LTTng on ARM?
Date: Sun, 30 Nov 2008 23:30:19 +0530 [thread overview]
Message-ID: <5d5443650811301000t58665a7j7aa93be52325a23b@mail.gmail.com> (raw)
Hi,
I would like to try LTTng to measure the keypad and touchscreen
drivers events latency on ARM based board, which typically runs less
than 1GHz frequency. I have recently tried LTTng patches as per
compatibility list on LTTng website on 2.6.25 kernel on ARM11 based
board, but on LTTv it shows the IRQ min/max interval times on
nanoseconds precision, would that be correct? Because I thought it
could be possible to microseconds format until with hrtimers support
right? Just guide so that I can use this tool to effectively measure
driver latencies. Thanks.
--
---Trilok Soni
http://triloksoni.wordpress.com
http://www.linkedin.com/in/triloksoni
next reply other threads:[~2008-11-30 18:00 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-30 18:00 Trilok Soni [this message]
2008-12-01 10:35 ` Mathieu Desnoyers
2008-12-01 10:45 ` Russell King
2008-12-01 10:57 ` [ltt-dev] " Mathieu Desnoyers
2008-12-01 10:59 ` Russell King
2008-12-01 11:41 ` Mathieu Desnoyers
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