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 disk caching options with virtio enabled (2 Replies, Read 3427 times)
dimtsef
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Post Group: Newbie
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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.


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disk caching options with virtio enabled
owcteam
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Post Group: Newbie
Posts: 14
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disk caching options with virtio enabled
moka
Group: Member
Post Group: Working Newbie
Posts: 58
Status:
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




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