[Gluster-users] Tuning for Home Directories
rfortier at redhat.com
Fri Oct 11 14:57:08 UTC 2013
That radical of a performance slowdown is often a network problem, especially if this is a new hardware setup that hasn't been shaken out yet. Can you crank up a copy of Wireshark and see if there is something funky going on at that level (like lots of timeouts)?
----- Original Message -----
From: "Joel Young" <jdy at cryregarder.com>
To: "Nux!" <nux at li.nux.ro>
Cc: "gluster-users" <gluster-users at gluster.org>
Sent: Friday, October 11, 2013 10:47:11 AM
Subject: Re: [Gluster-users] Tuning for Home Directories
Yes. No appreciable improvement.
On Fri, Oct 11, 2013 at 7:44 AM, Nux! <nux at li.nux.ro> wrote:
> On 11.10.2013 15:33, Joel Young wrote:
>> Re home directory tuning...
>> Any suggestions? We are still getting extraordinary slowness in using
>> gluster for home directories. SVN checkouts to the volume are very
>> slow, configure scripts are very slow.
>> The cluster hardware is overspecced. Each of the four nodes are
>> connected via 10GB ethernet, have 24-64 cores, and from 128GB to
>> On Wed, Sep 18, 2013 at 10:44 AM, Joel Young <jdy at cryregarder.com> wrote:
>>> I've got a HPC type set up with four nodes and a
>>> distributed-replicated configuration. Performing developer type
>>> actions is disfunctionally slow on the volume. Below is the
>>> Volume Name: home
>>> Type: Distributed-Replicate
>>> Volume ID: 83fa39a6-6e68-4e1c-8fae-3c3e30b1bd66
>>> Status: Started
>>> Number of Bricks: 2 x 2 = 4
>>> Transport-type: tcp
>>> Brick1: ir0:/lhome/gluster_home
>>> Brick2: ir1:/lhome/gluster_home
>>> Brick3: ir2:/lhome/gluster_home
>>> Brick4: ir3:/raid/gluster_home
>>> Options Reconfigured:
>>> server.statedump-path: /tmp
>>> performance.cache-size: 512MB
>>> performance.client-io-threads: on
>>> For example, configure runs take tens of minutes instead of fractions
>>> of minutes.
>>> I've tried setting lookup-unhashed to off or no without a significant
>>> performance change.
>>> Does anyone have any performance tunings or suggestions for making
>>> gluster based home directories usable for developers?
>>> Also, the documentation is unclear as to if lookup-unhashed should be
>>> set to yes or on, vs no or off. Some things indicate one way, some
>>> the other. boolean options should no allow multiple values to be set.
> Have you tried mounting the volume over NFS and see how that goes?
> Sent from the Delta quadrant using Borg technology!
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