Re: ZFS performance strangeness

2011-04-25 Thread krad
On 24 April 2011 17:21, Sergio de Almeida Lenzi wrote: > Em Ter, 2011-04-12 às 13:33 +0200, Lars Wilke escreveu: > > > Hi, > > > > There are quite a few threads about ZFS and performance difficulties, > > but i did not find anything that really helped :) > > Therefor any advice would be highly app

Re: ZFS performance strangeness

2011-04-24 Thread Sergio de Almeida Lenzi
Em Ter, 2011-04-12 às 13:33 +0200, Lars Wilke escreveu: > Hi, > > There are quite a few threads about ZFS and performance difficulties, > but i did not find anything that really helped :) > Therefor any advice would be highly appreciated. > I started to use ZFS with 8.1R, only tuning i did was se

Re: ZFS performance strangeness

2011-04-21 Thread Lars Wilke
Hi, thanks to all who answered. * Damien Fleuriot wrote: > I refer you to this post by Jeremy Chadwick with tuning values *AND* > their actual explanation. > > http://lists.freebsd.org/pipermail/freebsd-stable/2011-February/061642.html Good post indeed, but i think i found my problem elsewher

Re: ZFS performance strangeness

2011-04-14 Thread Damien Fleuriot
On 4/12/11 1:33 PM, Lars Wilke wrote: > Hi, > > There are quite a few threads about ZFS and performance difficulties, > but i did not find anything that really helped :) > Therefor any advice would be highly appreciated. > I started to use ZFS with 8.1R, only tuning i did was setting > > vm.kme

Re: ZFS performance strangeness

2011-04-14 Thread Ivan Voras
On 12/04/2011 13:33, Lars Wilke wrote: Now i upgraded one machine to 8.2R and i get very good write performance over NFS but read performance drops to a ridiciously low value, around 1-2 MB/s. While writes are around 100MB/s. The network is a dedicated If you don't get any answer here, try pos