[Gluster-users] Gluster 5.5 slower than 3.12.15

[Amar Tumballi Suryanarayan]

Strahil,

With some basic testing, we are noticing the similar behavior too.

One of the issue we identified was increased n/w usage in 5.x series (being
addressed by https://review.gluster.org/#/c/glusterfs/+/22404/), and there
are few other features which write extended attributes which caused some
delay.

We are in the process of publishing some numbers with release-3.12.x,
release-5 and release-6 comparison soon. With some numbers we are already
seeing release-6 currently is giving really good performance in many
configurations, specially for 1x3 replicate volume type.

While we continue to identify and fix issues in 5.x series, one of the
request is to validate release-6.x (6.0 or 6.1 which would happen on April
10th), so you can see the difference in your workload.

Regards,
Amar



On Wed, Apr 3, 2019 at 5:57 AM Strahil Nikolov <hunter86_bg at yahoo.com>
wrote:

> Hi Community,
>
> I have the feeling that with gluster v5.5 I have poorer performance than
> it used to be on 3.12.15. Did you observe something like that?
>
> I have a 3 node Hyperconverged Cluster (ovirt + glusterfs with replica 3
> arbiter1 volumes) with NFS Ganesha and since I have upgraded to v5 - the
> issues came up.
> First it was 5.3 notorious experience and now with 5.5 - my sanlock is
> having problems and higher latency than it used to be. I have switched from
> NFS-Ganesha to pure FUSE , but the latency problems do not go away.
>
> Of course , this is partially due to the consumer hardware, but as the
> hardware has not changed I was hoping that the performance will remain as
> is.
>
> So, do you expect 5.5 to perform less than 3.12 ?
>
> Some info:
> Volume Name: engine
> Type: Replicate
> Volume ID: 30ca1cc2-f2f7-4749-9e2e-cee9d7099ded
> Status: Started
> Snapshot Count: 0
> Number of Bricks: 1 x (2 + 1) = 3
> Transport-type: tcp
> Bricks:
> Brick1: ovirt1:/gluster_bricks/engine/engine
> Brick2: ovirt2:/gluster_bricks/engine/engine
> Brick3: ovirt3:/gluster_bricks/engine/engine (arbiter)
> Options Reconfigured:
> performance.client-io-threads: off
> nfs.disable: on
> transport.address-family: inet
> performance.quick-read: off
> performance.read-ahead: off
> performance.io-cache: off
> performance.low-prio-threads: 32
> network.remote-dio: off
> cluster.eager-lock: enable
> cluster.quorum-type: auto
> cluster.server-quorum-type: server
> cluster.data-self-heal-algorithm: full
> cluster.locking-scheme: granular
> cluster.shd-max-threads: 8
> cluster.shd-wait-qlength: 10000
> features.shard: on
> user.cifs: off
> storage.owner-uid: 36
> storage.owner-gid: 36
> network.ping-timeout: 30
> performance.strict-o-direct: on
> cluster.granular-entry-heal: enable
> cluster.enable-shared-storage: enable
>
> Network: 1 gbit/s
>
> Filesystem:XFS
>
> Best Regards,
> Strahil Nikolov
>
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-- 
Amar Tumballi (amarts)
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