# Anybody have slow transaction/commits running under Xen?

**URL:** <https://www.ruby-forum.com/t/anybody-have-slow-transaction-commits-running-under-xen/188106>\
**Category:** Rails\
**Created:** [May 5, 2010, 8:28pm UTC](https://www.ruby-forum.com/t/anybody-have-slow-transaction-commits-running-under-xen/188106 "2010-05-05T20:28:31Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jim](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/ac91a4/32.png) [@jim](https://www.ruby-forum.com/u/jim)\
**Post date:** [May 5, 2010, 8:28pm UTC](https://www.ruby-forum.com/t/anybody-have-slow-transaction-commits-running-under-xen/188106/1 "2010-05-05T20:28:31Z")

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I’m getting very slow transaction/commits with RoR 2.3.5 and Ruby  
1.8.6 p388 running under Xen. The same virtual machine setup under  
VMware runs the transactions fine. It’s Ubuntu 9.10 64bit server.

Under Xen, it’s taking 22ms to commit, according to the development  
log. Under VMware it’s taking 1ms or less. Doing it directly in  
mysql console, the times are about the same, so I think it’s a RoR  
issue. The hardware is different, but the Xen hardware is much faster.

Anybody else encounter this? Any solutions? I’ve tried different  
mysql versions and different Ruby versions/patch-levels.

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<div class="post-metadata">

**Author:** ![jim](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/ac91a4/32.png) [@jim](https://www.ruby-forum.com/u/jim)\
**Post date:** [May 12, 2010, 7:01pm UTC](https://www.ruby-forum.com/t/anybody-have-slow-transaction-commits-running-under-xen/188106/2 "2010-05-12T19:01:36Z")

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Anybody?