slow tar performance on fbsd5
JG
jarek at adeon.lublin.pl
Wed Aug 24 17:49:51 GMT 2005
> Might be silly but do u get similar results if u:
> 1. expand to a memory backed disk
> 2. expand to /dev/null
Hello,
Thank you for test advice.
FreeBSD:
# time tar -xf mysql-m.tgz -O > /dev/null
1.125u 3.007s 0:04.13 99.7% 41+323k 0+0io 0pf+0w
# time tar -xf mysql-m.tgz -O > /dev/null
1.194u 3.013s 0:04.22 99.5% 41+321k 1+0io 0pf+0w
So the same result twice. BTW It's fast.
-------------------------------
Gentoo:
# time tar -xf mysql-m.tgz -O > /dev/null
real 0m7.586s
user 0m0.906s
sys 0m1.352s
# time tar -xf mysql-m.tgz -O > /dev/null
real 0m1.640s
user 0m0.833s
sys 0m0.808s
Seems like a cached. First time 7,5 sec, each next time it takes only
1.6secs. I checked it with the other file and result is the same.
Anyway, it's only a few secs difference, so the problem must be with write. Any other hints? :)
Thank You,
JG
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