[Gluster-devel] gluster 3.0.0 catastrophic crash during basic file creation test

Tejas N. Bhise tejas at gluster.com
Thu Feb 4 18:39:51 UTC 2010


Hi Gordan,

Thanks for your feedback on unfsd. We will have a look.

How's the experience on 3.0.2rc1, performance wise, between a Gluster client and server using the native protocol ? Did you see that worsen in comparison to 2.0.9 or improve compared to 2.0.9 ? Would be very interested to know.

Regards,
Tejas.
----- Original Message -----
From: "Gordan Bobic" <gordan at bobich.net>
To: "Gluster List" <gluster-devel at nongnu.org>
Sent: Thursday, February 4, 2010 11:58:39 PM GMT +05:30 Chennai, Kolkata, Mumbai, New Delhi
Subject: Re: [Gluster-devel] gluster 3.0.0 catastrophic crash during basic file	creation test

Tejas N. Bhise wrote:
> Besides that, if you have recently upgraded to 3.0.0,
> please consider 3.0.2 which would be out very soon
> ( your can even try 3.0.2rc1 ). It has much better
> performance that previous versions too.

I'm no longer that convinced. My observation is that latencies in the 
glfs+unfsd use-case are _much_ higher with 3.0.2rc1 than they were with 
2.0.9. So much higher that the setup is nearly unusable for /home. I 
haven't observed this slow-down with other things on glfs root, though, 
only with unfsd exports. io-cache and write-behind translators seem to 
help a lot, but I'm still weary of using any performance translators at 
the moment, especially with the spurious disconnects I mentioned in a 
separate thread.

Gordan


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