Dear Stefan, is it possible that there is a mistake in the documentation or a bug? Out of curiosity, I restarted one of these OSDs and the memory usage starts going up:
ceph 881203 15.4 4.0 6201580 5344764 ? Sl 09:18 6:38 /usr/bin/ceph-osd --cluster ceph -f -i 243 --setuser ceph --setgroup disk The documentation of ods_memory_target says "Can update at runtime: true", but it seems that a restart is required to activate the setting, so it can *not* be updated at runtime (meaning it takes effect without restart). In addition to that, I would like to have different default memory targets set for different device classes. Unfortunately, there seem not to be different memory_target_[devide class] default options. Is there a good way to set different while avoiding to bloat "ceph config dump" unnecessarily? Best regards, ================= Frank Schilder AIT Risø Campus Bygning 109, rum S14 ________________________________________ From: Frank Schilder <fr...@dtu.dk> Sent: 05 February 2020 09:09:22 To: Stefan Kooman Cc: ceph-users Subject: [ceph-users] Re: osd_memory_target ignored Hi Stefan, its all at the defaults it seems: [root@gnosis ~]# ceph config get osd.243 bluestore_cache_size 0 [root@gnosis ~]# ceph config get osd.243 bluestore_cache_size_ssd 3221225472 I explicitly removed the old settings with commands like ceph config rm osd.243 bluestore_cache_size Best regards, ================= Frank Schilder AIT Risø Campus Bygning 109, rum S14 ________________________________________ From: Stefan Kooman <ste...@bit.nl> Sent: 04 February 2020 21:14:28 To: Frank Schilder Cc: ceph-users Subject: Re: [ceph-users] osd_memory_target ignored Quoting Frank Schilder (fr...@dtu.dk): > Dear Stefan, > > I check with top the total allocation. ps -aux gives: > > USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND > ceph 784155 15.8 3.1 6014276 4215008 ? Sl Jan31 932:13 > /usr/bin/ceph-osd --cluster ceph -f -i 243 ... > ceph 784732 16.6 3.0 6058736 4082504 ? Sl Jan31 976:59 > /usr/bin/ceph-osd --cluster ceph -f -i 247 ... > ceph 785812 17.1 3.0 5989576 3959996 ? Sl Jan31 1008:46 > /usr/bin/ceph-osd --cluster ceph -f -i 254 ... > ceph 786352 14.9 3.1 5955520 4132840 ? Sl Jan31 874:37 > /usr/bin/ceph-osd --cluster ceph -f -i 256 ... > > These should have 8GB resident by now, but stay at or just below 4G. The > other options are set as > > [root@ceph-04 ~]# ceph config get osd.243 bluefs_allocator > bitmap > [root@ceph-04 ~]# ceph config get osd.243 bluestore_allocator > bitmap > [root@ceph-04 ~]# ceph config get osd.243 osd_memory_target > 8589934592 What does "bluestore_cache_size" read? Our OSDs report "0". Gr. Stefan -- | BIT BV https://www.bit.nl/ Kamer van Koophandel 09090351 | GPG: 0xD14839C6 +31 318 648 688 / i...@bit.nl _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
