Re: [ceph-users] RBD performance slowly degrades :-(

2015-08-12 Thread Max A. Krasilnikov
Здравствуйте! On Wed, Aug 12, 2015 at 02:30:59PM +, pieter.koorts wrote: > Hi Irek, > Thanks for the link. I have removed the SSD's for now and performance is up > to 30MB/s on a benchmark now. To be honest, I new the Samsung SSD weren't > great but did not expect them to be worse then ju

Re: [ceph-users] RBD performance slowly degrades :-(

2015-08-12 Thread Pieter Koorts
Hi Irek, Thanks for the link. I have removed the SSD's for now and performance is up to 30MB/s on a benchmark now. To be honest, I new the Samsung SSD weren't great but did not expect them to be worse then just plain hard disks. Pieter On Aug 12, 2015, at 01:09 PM, Irek Fasikhov wrote: Hi.

Re: [ceph-users] RBD performance slowly degrades :-(

2015-08-12 Thread Irek Fasikhov
Hi. Read this thread here: https://www.mail-archive.com/ceph-users@lists.ceph.com/msg17360.html С уважением, Фасихов Ирек Нургаязович Моб.: +79229045757 2015-08-12 14:52 GMT+03:00 Pieter Koorts : > Hi > > Something that's been bugging me for a while is I am trying to diagnose > iowait time withi

[ceph-users] RBD performance slowly degrades :-(

2015-08-12 Thread Pieter Koorts
Hi Something that's been bugging me for a while is I am trying to diagnose iowait time within KVM guests. Guests doing reads or writes tend do about 50% to 90% iowait but the host itself is only doing about 1% to 2% iowait. So the result is the guests are extremely slow. I currently run 3x ho