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Hard disk write cache?



Some interesting results:

copy of 500MB file 'time cp file file.new'

ext3, -d1 -c1 -m16 -u1 -W1
real   1m42.435s
user   0m0.220s
sys    0m17.740s

ext3, -d1 -c1 -m16 -u0 -W0
real   2m24.970s
user   0m0.210s
sys    0m18.780s

ext3, -d1 -c1 -m16 -u0 -W1
real   1m52.677s
user   0m0.290s
sys    0m17.950s

So basically my question is; do I loose all benefits of ext3 if I turn on
the hard disk write cache?

/Martin





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