> we did test dm-cache, bcache and dm-writecache, we found the later to be > much better.
Did you set bcache block size to 4096 during your tests? Without this setting it's slow because 99.9% SSDs don't handle 512 byte overwrites well. Otherwise I don't think bcache should be worse than dm-writecache. Also dm-writecache only caches writes, and bcache also caches reads. And lvmcache is trash because it only writes to SSD when the block is already on the SSD. Please post some details about the comparison if you have them :) _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
