Hello Community
Happy Valentines Day ;-)
I need some advice on using EXATA RAM on my OSD servers to improve Ceph's write performance.
I have 20 OSD servers each with 256GB RAM and 6TB x 16 OSD's, so assuming cluster is not recovering, most of the time system will have at least ~150GB RAM free. And for 20 machines its a lot ~3.0 TB RAM
Is there any way to use this free RAM to improve write performance of cluster. Something like Linux page cache for OSD write operations.
I assume that by default Linux page cache can use free memory to improve OSD read performance ( please correct me if i am wrong). But how about OSD write improvement , How to improve that with free RAM.
PS : My Ceph cluster's workload is just OpenStack Cinder , Glance , Nova for instance disk
- Vickey -
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