So,
On Fri, Dec 15, 2017 at 10:58 AM, Yan, Zheng <ukernel@xxxxxxxxx> wrote:
Regards,
300k are ready quite a lot. opening them requires long time. does you
mail server really open so many files?
Yes, probably. It's a commercial solution. A few thousand domains, dozens of thousands of users and god knows how any mailboxes.
From the daemonperf you can see the write workload is high, so yes, too much files opening (dovecot mdbox stores multiple e-mails per file, split into many files).
I checked 4.4 kernel, it includes the code that trim cache when mds recovers.
Ok, all nodes are running 4.4.0-75-generic. The fix might have been included in a newer version.
I'll upgrade it asap.
I'll upgrade it asap.
Webert Lima
DevOps Engineer at MAV Tecnologia
Belo Horizonte - Brasil
IRC NICK - WebertRLZ
_______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
