[Bug 424935] Re: patch from upstream kernel: Large I/O operations result in slow performance and high iowait times

Fri Apr 30 16:41:32 UTC 2010

2.6.32-21-generic #32-Ubuntu SMP Fri Apr 16 08:10:02 UTC 2010 i686 GNU/Linux
iostat -m
Linux 2.6.32-21-generic (xxx-eeepc) 	30/04/10 	_i686_	(2 CPU)

avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           6.45    0.06    2.23    1.58    0.00   89.69

Device:            tps    MB_read/s    MB_wrtn/s    MB_read    MB_wrtn
sda               1.52         0.05         0.04        220        148
sdb               3.71         0.03         0.07        131        284

That is the ouput of a lucid kernel, bonnie++ shows 11 MB/s which is a
huge regression from 29MB/s in Karmic both standard kernels.

-- 
patch from upstream kernel: Large I/O operations result in slow performance and high iowait times
https://bugs.launchpad.net/bugs/424935
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