Softaculous

Topic : disk caching options with virtio enabled

Posted By: dimtsef on May 21, 2015, 12:50 pm

ok all we know that if we select virtio option we will get the best performance.

now the question is very simple from my end.
the next option when you create the vps is the Disk caching

as i can see the default option is set to None but are 3 more options,
writeback
writethrough
default

which is the best option for performance ? well in my case my hardware node is set with raid5 and its protected with hardware controller 1gb vaultcache and bbu.

Posted By: owcteam on August 28, 2015, 12:01 am | Post: 1

Posted By: moka on August 29, 2015, 8:29 am | Post: 2

If you got BBU and cache, then you can use WB but I suggest you read this article and decide based on your node config and your needs, for example if you have a Windows vps for databse, using RAW format with WT could be better than other options.

http://www.ilsistemista.net/index.php/virtualization/11-kvm-io-slowness-on-rhel-6.html