# Very poor read performance after moving to Galera cluster

**URL:** <https://forums.percona.com/t/very-poor-read-performance-after-moving-to-galera-cluster/5043>\
**Category:** Percona XtraDB Cluster 5.x\
**Created:** [August 22, 2016, 3:59pm UTC](https://forums.percona.com/t/very-poor-read-performance-after-moving-to-galera-cluster/5043 "2016-08-22T15:59:49Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![koenig](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/koenig/32/1132_2.png) [@koenig](https://forums.percona.com/u/koenig)\
**Post date:** [August 22, 2016, 3:59pm UTC](https://forums.percona.com/t/very-poor-read-performance-after-moving-to-galera-cluster/5043/1 "2016-08-22T15:59:49Z")

</div>

Hi,

We have recently moved to a Galera Cluster and have noticed that query performance has dropped rather radically. I have to admit that I am extremely new to Galera and hence I have not grokked all nuances of the parameters one can pass to it. My setup is a rather basic one and I have, for instance, read that perhaps I should look into gcache size.

So, have read this I realise that there must be more of which I am embarrassingly aware and I would very much appreciate any tips as to how to improve my performance.

Cheers,

K

---

<div class="post-metadata">

**Author:** ![krunalbauskar](https://avatars.discourse-cdn.com/v4/letter/k/439d5e/32.png) [@krunalbauskar](https://forums.percona.com/u/krunalbauskar)\
**Post date:** [April 24, 2017, 11:26am UTC](https://forums.percona.com/t/very-poor-read-performance-after-moving-to-galera-cluster/5043/2 "2017-04-24T11:26:39Z")

</div>

check the new performance optimized pxc-5.7

[url][https://www.percona.com/blog/2017/04/19/performance-improvements-percona-xtradb-cluster-5-7-17/[/url]](https://www.percona.com/blog/2017/04/19/performance-improvements-percona-xtradb-cluster-5-7-17/%5B/url%5D)