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List:       linux-ia64
Subject:    Context switch time regression...
From:       Peter Chubb <peterc () gelato ! unsw ! edu ! au>
Date:       2005-03-14 4:16:46
Message-ID: 16949.4142.908795.242198 () wombat ! chubb ! wattle ! id ! au
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According to LMbench2 on a 2-way 900MHz Itanium 2:

Context switching 0K - times in microseconds - smaller is better
----------------------------------------------------------------
OS                               2p/0k      4p/0k      8p/0k
                               ctx swtch  ctx swtch  ctx swtch 
-----------------------------  ---------  ---------  ---------
Linux 2.5.72                   1.5700000  1.6200000  1.7700000
Linux 2.6.0                      15.0600  8.6900000  8.8600000
Linux 2.6.11                     17.1900    17.2100    10.5400

I have to go now, but I'll try to track this down tomorrow.


-- 
Dr Peter Chubb  http://www.gelato.unsw.edu.au  peterc AT gelato.unsw.edu.au
The technical we do immediately,  the political takes *forever*
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