Anyone using freebsd ZFS for large storage servers?
Albert.Shih at obspm.fr
Fri Jun 1 16:24:35 UTC 2012
Le 01/06/2012 ? 18:17:38+0200, Wojciech Puchar a écrit
> i dare not to agree about "very fast". very fast is relative term. how did
> you configured your storage?
> trivial test:
> make 10 100GB files (so none fits in RAM) by
> for x in 0 1 2 3 4 5 6 7 8 9;do ( dd if=/dev/zero of=testfile$x bs=1m
> count=100k &) ;done
> measure time needed for it to finish (all dd processes exist)
> then install /usr/ports/benchmark/randomio and do some tests of random
> reads on that files.
> and final test - 10 randomio in parallel with 10 threads each, one per
> every file.
> then sum up results (IOPS) and divide by amount of disks you have.
> then decide if is it fast or slow :)
When I say fast that's mean I already do some benchmarks with iozone. And
do some graphs to see what the performance are.
What I can say is it's go lot faster than H700+ 12 disk 600 15k/min.
And I do those tests on FreeBSD with 12 disk, 24 disk, 36 disk and finaly
All I can say is ZFS go faster than 12 disk with H700 (and ext3) almost
If you like I can privalty send you the url of those graph. Just ask me,
> >> Eat lot of Ram
> can be controlled by settings in loader.conf.
Yes, but I think that's not a good idea to buy a server with 4 Go and make
him manage 100To through ZFS....
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