Re: [ceph-users] 回复:Re: testing ceph performance issue

2013-11-27 Thread Kyle Bader
How much performance can be improved if use SSDs to storage journals? You will see roughly twice the throughput unless you are using btrfs (still improved but not as dramatic). You will also see lower latency because the disk head doesn't have to seek back and forth between journal and data

[ceph-users] 回复:Re: testing ceph performance issue

2013-11-26 Thread haiquan517
Hi Mark Thanks your reply! Yes, 33T OSD we are use 1 disk per OSD. - Do you use SSDs for journals? Ask: don't use SSDs for journals , how much performance can be improved if use SSDs to storage journals? - What CPU do you have in each node? Ask: CPU : Intel(R)