vinum in 4.x poor performer?
Marc G. Fournier
scrappy at hub.org
Tue Feb 8 20:15:40 PST 2005
Self-followup .. the server config is as follows ... did I do maybe
mis-configure the array?
# Vinum configuration of neptune.hub.org, saved at Wed Feb 9 00:13:52 2005
drive d0 device /dev/da1s1a
drive d1 device /dev/da2s1a
drive d2 device /dev/da3s1a
drive d3 device /dev/da4s1a
volume vm
plex name vm.p0 org raid5 1024s vol vm
sd name vm.p0.s0 drive d0 plex vm.p0 len 142314496s driveoffset 265s plexoffset 0s
sd name vm.p0.s1 drive d1 plex vm.p0 len 142314496s driveoffset 265s plexoffset 1024s
sd name vm.p0.s2 drive d2 plex vm.p0 len 142314496s driveoffset 265s plexoffset 2048s
sd name vm.p0.s3 drive d3 plex vm.p0 len 142314496s driveoffset 265s plexoffset 3072s
bassed on an initial config file that looks like:
neptune# cat /root/raid5
drive d0 device /dev/da1s1a
drive d1 device /dev/da2s1a
drive d2 device /dev/da3s1a
drive d3 device /dev/da4s1a
volume vm
plex org raid5 512k
sd length 0 drive d0
sd length 0 drive d1
sd length 0 drive d2
sd length 0 drive d3
On Tue, 8 Feb 2005, Marc G. Fournier wrote:
>
> I have a Dual-Xeon server with 4G of RAM, with its primary file system
> consisting of 4x73G SCSI drives running RAID5 using vinum ... the operating
> system is currently FreeBSD 4.10-STABLE #1: Fri Oct 22 15:06:55 ADT 2004 ...
> swap usage is 0% (6149) ... and it performs worse then any of my other
> servers, and I have less running on it then the other servers ...
>
> I also have HTT disabled on this server ... and softupdates enabled on the
> file system ...
>
> That said ... am I hitting limits of software raid or is there something I
> should be looking at as far as performance is concerned? Maybe something I
> have misconfigured?
>
>
>
> ----
> Marc G. Fournier Hub.Org Networking Services (http://www.hub.org)
> Email: scrappy at hub.org Yahoo!: yscrappy ICQ: 7615664
>
On Tue, 8 Feb 2005, Marc G. Fournier wrote:
> On Wed, 9 Feb 2005, Olivier Nicole wrote:
>
>>> and it performs worse then any of
>>> my other servers, and I have less running on it then the other servers ...
>>
>> What are you other servers? What RAID system/level?
>
> All servers run RAID5 .. only one other is using vinum, the other 3 are using
> hardware RAID controllers ...
>
> ----
> Marc G. Fournier Hub.Org Networking Services (http://www.hub.org)
> Email: scrappy at hub.org Yahoo!: yscrappy ICQ: 7615664
>
----
Marc G. Fournier Hub.Org Networking Services (http://www.hub.org)
Email: scrappy at hub.org Yahoo!: yscrappy ICQ: 7615664
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