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List:       linux-kernel
Subject:    keypad/touchscreen driver events latencies using LTTng on ARM?
From:       "Trilok Soni" <soni.trilok () gmail ! com>
Date:       2008-11-30 18:12:19
Message-ID: 5d5443650811301000t58665a7j7aa93be52325a23b () mail ! gmail ! com
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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
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