[Gluster-users] Write performance tragically slow

[Luis E. Cerezo]

have you tried larger files? I have seen a note somewhere that refers to tons of itty bitty files, it even cites the kernel source as an example. I can't seem to find it.

Could you try larger than 1k files? 

-luis




On Nov 10, 2010, at 8:23 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 :(
> 
> -- 
> S pozdravem / Best Regards
> 
> Pavel Šnajdr
> +420 720 107 791
> 
> http://vpsfree.cz
> 
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> 

Luis E. Cerezo

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