any sugesstions? Thanks. ---------- Forwarded message ---------- From: Dong Wu <archer.wudong@xxxxxxxxx> Date: 2016-10-27 18:50 GMT+08:00 Subject: Re: Hammer OSD memory increase when add new machine To: huang jun <hjwsm1989@xxxxxxxxx> 抄送： ceph-users <ceph-users@xxxxxxxxxxxxxx> 2016-10-27 17:50 GMT+08:00 huang jun <hjwsm1989@xxxxxxxxx>: > how do you add the new machine ? > does it first added to default ruleset and then you add the new rule > for this group? > do you have data pool use the default rule, does these pool contain data? we dont use default ruleset, when we add new group machine, crush_location auto generate root and chassis, then we add a new rule for this group. > 2016-10-27 17:34 GMT+08:00 Dong Wu <archer.wudong@xxxxxxxxx>: >> Hi all, >> >> We have a ceph cluster only use rbd. The cluster contains several >> group machines, each group contains several machines, then each >> machine has 12 SSDs, each ssd as an OSD (journal and data together). >> eg: >> group1: machine1~machine12 >> group2: machine13~machine24 >> ...... >> each group is separated with other group, which means each group has >> separated pools. >> >> we use Hammer(0.94.6) compiled with jemalloc(4.2). >> >> We have found that when we add a new group machine, the other group >> machine's memory increase 5% more or less (OSDs usage). >> >> each group's data is separated with others, so backfill only in group, >> not across. >> Why add a group of machine cause others memory increase? Is this reasonable? >> >> _______________________________________________ >> ceph-users mailing list >> ceph-users@xxxxxxxxxxxxxx >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> > > > > -- > Thank you! > HuangJun _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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