On 07/02/15 12:48, German Anders wrote: > The idea is to cache rbd at a host level. Also could be possible to > cache at the osd level. We have high iowait and we need to lower it a > bit, since we are getting the max from our sas disks 100-110 iops per > disk (3TB osd's), any advice? Flashcache? It's hard to suggest anything without knowing more about your setup. Are your I/O mostly reads or writes? Reads: can you add enough RAM on your guests or on your OSD to cache your working set? Writes: do you use SSD for journals already? Lionel _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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