On Sat, Jul 15, 2017 at 9:43 AM, Nick Fisk <nick@xxxxxxxxxx> wrote: > Unless you tell the rbd client to not disable readahead after reading the 1st x number of bytes (rbd readahead disable after bytes=0), it will stop reading ahead and will only cache exactly what is requested by the client. The default is to disable librbd readahead caching after reading 50MB -- since we expect the OS to take over and do a much better job. -- Jason _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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