[Gluster-users] Write performance tragically slow

[Craig Carl]

Pavel -
    I have other performance testing running in EC2 this weekend, I'll 
add a kernel extract to the test suite, see what I get with various 
instance types, EBS design, etc. I'll get the results out to the list on 
Tuesday.

Thanks,

Craig

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Craig Carl
Senior Systems Engineer
Gluster

On 11/10/2010 06:23 PM, Pavel Snajdr wrote:
> Hello,
>
> I imagine you get this kind of messages all the time, but just in case:
>
> I have setup with 2 storage servers with debian package of gluster - 
> version 3.1.0
>
> They are connected by dedicated 1 gigabit ethernet cards.
>
> I've set up simple replicated storage with 2 replicas and transport 
> over TCP (just followed the how to on the wiki with obvious changes).
>
> Here goes my problem:
>
> If I try to copy small files (i.e. extract kernel source) I get a 
> horrible results:
>
> praha-storage2:/mnt/test# time tar xf linux-2.6.26.8.tar.bz2
>
>
> real 15m19.825s
> user 0m13.989s
> sys 0m5.152s
>
> likewise when rsyncing OpenVZ VPSes - I just can't get over 2MB/s in 
> syncing.
>
> I've monitored all resources - CPU load, network, disk I/O - they are 
> all used up to 0.00000nothing %.
>
> Network latency is about 0.11 ms all the time.
>
> Is this normal, or am I doing something wrong?
>
> Please help. I am frustrated :(
>