MySQL Forums
Forum List  »  MyISAM

Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
Posted by: Ben Wallach
Date: January 26, 2013 03:36PM

Thanks Scott/Rick.

yes, we are using RAID-1 on old and new setup.
One other observation is that during the heavy writes we observe the following via the iotop utility:
I/O
----------------------------
old hardware:
root ~12.00% [jbd2/sda4-8]

new hardware
root 99.99% [jbd2/sda4-8]

My understanding is this root process has to do with the Linux filesystem journaling. I dont know enough about this though.

Options: ReplyQuote


Subject
Views
Written By
Posted
Re: 5.1 to 5.5 upgrade causes significant write slowdown (MyISAM + indexes)
1953
January 26, 2013 03:36PM


Sorry, you can't reply to this topic. It has been closed.

Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily represent the opinion of Oracle or any other party.