[pve-devel] sheepdog : new init.d script to manage multi daemons

Dietmar Maurer dietmar at proxmox.com
Sat Jul 14 10:39:07 CEST 2012


Just found this on the sheepdog user list:

> This low IOPS can be actually explained by poor data transfer between
> QEMU and sheep daemon: the tx/rx of data is serialized because only main
> thread can tx/rx data. So whatever threads you have for requests, the
> performance is limited to a rather low value.

Maybe that explains the behavior.

> -----Original Message-----
> From: Stefan Priebe [mailto:s.priebe at profihost.ag]
> Sent: Freitag, 13. Juli 2012 14:14
> To: Dietmar Maurer
> Cc: Alexandre DERUMIER; pve-devel at pve.proxmox.com
> Subject: Re: [pve-devel] sheepdog : new init.d script to manage multi
> daemons
> 
> Am 13.07.2012 um 10:35 schrieb Dietmar Maurer <dietmar at proxmox.com>:
> 
> >> in my performance tests , with 1 sheep daemon by disk seem to be
> >> faster, than make a raid with 1 sheep daemon.
> 
> Same to me while using SSD.
> 
> > Why should that be faster? Maybe your benchmark is simply not accurate?






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