xfs cpu usage

[Michal Adamczak <pokryfka@xxxxxxxxxxxxxxxxxx>]

hi,
when coping/deleting files (both small and very large)
the cpu usage reaches 100% so that it's hardly possible to do anything
else at the same time

what could possibly be the reason?

i use linux 2.5.65 (though same goes for 2.4.20)
debian sid

i use the following hdparm settings:
#hdparm -d1 c1 -u1 -m8 /dev/hda

which results in 

#hdparm  /dev/hda
 
 /dev/hda:
  multcount    = 16 (on)
        IO_support   =  1 (32-bit)
        unmaskirq    =  1 (on)
        using_dma    =  1 (on)
        keepsettings =  0 (off)
        readonly     =  0 (off)
        readahead    = 256 (on)
        geometry     = 23989/16/63, sectors = 156301488, start = 0
                                 

-- 
Michal Adamczak
pokryfka @ druid.if.uj.edu.pl
GS dpu C+++ UL+++++ L+++(++++) w--- !tv h*
I code AND I bathe. (seen on slashdot)