Please open ticket at http://tracker.ceph.com, if you haven't yet. On Thu, Feb 16, 2017 at 6:07 PM, Muthusamy Muthiah <muthiah.muthusamy at gmail.com> wrote: > Hi Wido, > > Thanks for the information and let us know if this is a bug. > As workaround we will go with small bluestore_cache_size to 100MB. > > Thanks, > Muthu > > On 16 February 2017 at 14:04, Wido den Hollander <wido at 42on.com> wrote: >> >> >> > Op 16 februari 2017 om 7:19 schreef Muthusamy Muthiah >> > <muthiah.muthusamy at gmail.com>: >> > >> > >> > Thanks IIya Letkowski for the information we will change this value >> > accordingly. >> > >> >> What I understand from yesterday's performance meeting is that this seems >> like a bug. Lowering this buffer reduces memory, but the root-cause seems to >> be memory not being freed. A few bytes of a larger allocation still >> allocated causing this buffer not to be freed. >> >> Tried: >> >> debug_mempools = true >> >> $ ceph daemon osd.X dump_mempools >> >> Might want to view the YouTube video of yesterday when it's online: >> https://www.youtube.com/channel/UCno-Fry25FJ7B4RycCxOtfw/videos >> >> Wido >> >> > Thanks, >> > Muthu >> > >> > On 15 February 2017 at 17:03, Ilya Letkowski <mj12.svetzari at gmail.com> >> > wrote: >> > >> > > Hi, Muthusamy Muthiah >> > > >> > > I'm not totally sure that this is a memory leak. >> > > We had same problems with bluestore on ceph v11.2.0. >> > > Reduce bluestore cache helped us to solve it and stabilize OSD memory >> > > consumption on the 3GB level. >> > > >> > > Perhaps this will help you: >> > > >> > > bluestore_cache_size = 104857600 >> > > >> > > >> > > >> > > On Tue, Feb 14, 2017 at 11:52 AM, Muthusamy Muthiah < >> > > muthiah.muthusamy at gmail.com> wrote: >> > > >> > >> Hi All, >> > >> >> > >> On all our 5 node cluster with ceph 11.2.0 we encounter memory leak >> > >> issues. >> > >> >> > >> Cluster details : 5 node with 24/68 disk per node , EC : 4+1 , RHEL >> > >> 7.2 >> > >> >> > >> Some traces using sar are below and attached the memory utilisation >> > >> graph >> > >> . >> > >> >> > >> (16:54:42)[cn2.c1 sa] # sar -r >> > >> 07:50:01 kbmemfree kbmemused %memused kbbuffers kbcached kbcommit >> > >> %commit >> > >> kbactive kbinact kbdirty >> > >> 10:20:01 32077264 132754368 80.54 16176 3040244 77767024 47.18 >> > >> 51991692 >> > >> 2676468 260 >> > >> >> > >> >> > >> >> > >> >> > >> >> > >> >> > >> >> > >> >> > >> *10:30:01 32208384 132623248 80.46 16176 3048536 77832312 47.22 >> > >> 51851512 >> > >> 2684552 1210:40:01 32067244 132764388 80.55 16176 3059076 77832316 >> > >> 47.22 >> > >> 51983332 2694708 26410:50:01 30626144 134205488 81.42 16176 3064340 >> > >> 78177232 47.43 53414144 2693712 411:00:01 28927656 135903976 82.45 >> > >> 16176 >> > >> 3074064 78958568 47.90 55114284 2702892 1211:10:01 27158548 137673084 >> > >> 83.52 >> > >> 16176 3080600 80553936 48.87 56873664 2708904 1211:20:01 26455556 >> > >> 138376076 >> > >> 83.95 16176 3080436 81991036 49.74 57570280 2708500 811:30:01 >> > >> 26002252 >> > >> 138829380 84.22 16176 3090556 82223840 49.88 58015048 2718036 >> > >> 1611:40:01 >> > >> 25965924 138865708 84.25 16176 3089708 83734584 50.80 58049980 >> > >> 2716740 >> > >> 1211:50:01 26142888 138688744 84.14 16176 3089544 83800100 50.84 >> > >> 57869628 >> > >> 2715400 16* >> > >> >> > >> ... >> > >> ... >> > >> >> > >> In the attached graph, there is increase in memory utilisation by >> > >> ceph-osd during soak test. And when it reaches the system limit of >> > >> 128GB >> > >> RAM , we could able to see the below dmesg logs related to memory out >> > >> when >> > >> the system reaches close to 128GB RAM. OSD.3 killed due to Out of >> > >> memory >> > >> and started again. >> > >> >> > >> [Tue Feb 14 03:51:02 2017] *tp_osd_tp invoked oom-killer: >> > >> gfp_mask=0x280da, order=0, oom_score_adj=0* >> > >> [Tue Feb 14 03:51:02 2017] tp_osd_tp cpuset=/ mems_allowed=0-1 >> > >> [Tue Feb 14 03:51:02 2017] CPU: 20 PID: 11864 Comm: tp_osd_tp Not >> > >> tainted >> > >> 3.10.0-327.13.1.el7.x86_64 #1 >> > >> [Tue Feb 14 03:51:02 2017] Hardware name: HP ProLiant XL420 >> > >> Gen9/ProLiant >> > >> XL420 Gen9, BIOS U19 09/12/2016 >> > >> [Tue Feb 14 03:51:02 2017] ffff8819ccd7a280 0000000030e84036 >> > >> ffff881fa58f7528 ffffffff816356f4 >> > >> [Tue Feb 14 03:51:02 2017] ffff881fa58f75b8 ffffffff8163068f >> > >> ffff881fa3478360 ffff881fa3478378 >> > >> [Tue Feb 14 03:51:02 2017] ffff881fa58f75e8 ffff8819ccd7a280 >> > >> 0000000000000001 000000000001f65f >> > >> [Tue Feb 14 03:51:02 2017] Call Trace: >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff816356f4>] dump_stack+0x19/0x1b >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff8163068f>] >> > >> dump_header+0x8e/0x214 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff8116ce7e>] >> > >> oom_kill_process+0x24e/0x3b0 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff8116c9e6>] ? >> > >> find_lock_task_mm+0x56/0xc0 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff8116d6a6>] >> > >> *out_of_memory+0x4b6/0x4f0* >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff81173885>] >> > >> __alloc_pages_nodemask+0xa95/0xb90 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff811b792a>] >> > >> alloc_pages_vma+0x9a/0x140 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff811976c5>] >> > >> handle_mm_fault+0xb85/0xf50 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff811957fb>] ? >> > >> follow_page_mask+0xbb/0x5c0 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff81197c2b>] >> > >> __get_user_pages+0x19b/0x640 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff8119843d>] >> > >> get_user_pages_unlocked+0x15d/0x1f0 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff8106544f>] >> > >> get_user_pages_fast+0x9f/0x1a0 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff8121de78>] >> > >> do_blockdev_direct_IO+0x1a78/0x2610 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff81218c40>] ? I_BDEV+0x10/0x10 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff8121ea65>] >> > >> __blockdev_direct_IO+0x55/0x60 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff81218c40>] ? I_BDEV+0x10/0x10 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff81219297>] >> > >> blkdev_direct_IO+0x57/0x60 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff81218c40>] ? I_BDEV+0x10/0x10 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff8116af63>] >> > >> generic_file_aio_read+0x6d3/0x750 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffffa038ad5c>] ? >> > >> xfs_iunlock+0x11c/0x130 [xfs] >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff811690db>] ? >> > >> unlock_page+0x2b/0x30 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff81192f21>] ? >> > >> __do_fault+0x401/0x510 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff8121970c>] >> > >> blkdev_aio_read+0x4c/0x70 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff811ddcfd>] >> > >> do_sync_read+0x8d/0xd0 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff811de45c>] vfs_read+0x9c/0x170 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff811df182>] >> > >> SyS_pread64+0x92/0xc0 >> > >> [Tue Feb 14 03:51:02 2017] [<ffffffff81645e89>] >> > >> system_call_fastpath+0x16/0x1b >> > >> >> > >> >> > >> Feb 14 03:51:40 fr-paris kernel: *Out of memory: Kill process 7657 >> > >> (ceph-osd) score 45 or sacrifice child* >> > >> Feb 14 03:51:40 fr-paris kernel: Killed process 7657 (ceph-osd) >> > >> total-vm:8650208kB, anon-rss:6124660kB, file-rss:1560kB >> > >> Feb 14 03:51:41 fr-paris systemd:* ceph-osd at 3.service: main process >> > >> exited, code=killed, status=9/KILL* >> > >> Feb 14 03:51:41 fr-paris systemd: Unit ceph-osd at 3.service entered >> > >> failed >> > >> state. >> > >> Feb 14 03:51:41 fr-paris systemd: *ceph-osd at 3.service failed.* >> > >> Feb 14 03:51:41 fr-paris systemd: cassandra.service: main process >> > >> exited, >> > >> code=killed, status=9/KILL >> > >> Feb 14 03:51:41 fr-paris systemd: Unit cassandra.service entered >> > >> failed >> > >> state. >> > >> Feb 14 03:51:41 fr-paris systemd: cassandra.service failed. >> > >> Feb 14 03:51:41 fr-paris ceph-mgr: 2017-02-14 03:51:41.978878 >> > >> 7f51a3154700 -1 mgr ms_dispatch osd_map(7517..7517 src has >> > >> 6951..7517) v3 >> > >> Feb 14 03:51:42 fr-paris systemd: Device >> > >> dev-disk-by\x2dpartlabel-ceph\x5cx20block.device >> > >> appeared twice with different sysfs paths >> > >> /sys/devices/pci0000:00/0000:0 >> > >> 0:03.2/0000:03:00.0/host0/target0:0:0/0:0:0:9/block/sdj/sdj2 and >> > >> /sys/devices/pci0000:00/0000:00:03.2/0000:03:00.0/host0/targ >> > >> et0:0:0/0:0:0:4/block/sde/sde2 >> > >> Feb 14 03:51:42 fr-paris ceph-mgr: 2017-02-14 03:51:42.992477 >> > >> 7f51a3154700 -1 mgr ms_dispatch osd_map(7518..7518 src has >> > >> 6951..7518) v3 >> > >> Feb 14 03:51:43 fr-paris ceph-mgr: 2017-02-14 03:51:43.508990 >> > >> 7f51a3154700 -1 mgr ms_dispatch mgrdigest v1 >> > >> Feb 14 03:51:48 fr-paris ceph-mgr: 2017-02-14 03:51:48.508970 >> > >> 7f51a3154700 -1 mgr ms_dispatch mgrdigest v1 >> > >> Feb 14 03:51:53 fr-paris ceph-mgr: 2017-02-14 03:51:53.509592 >> > >> 7f51a3154700 -1 mgr ms_dispatch mgrdigest v1 >> > >> Feb 14 03:51:58 fr-paris ceph-mgr: 2017-02-14 03:51:58.509936 >> > >> 7f51a3154700 -1 mgr ms_dispatch mgrdigest v1 >> > >> Feb 14 03:52:01 fr-paris systemd: ceph-osd at 3.service holdoff time >> > >> over, >> > >> scheduling restart. >> > >> Feb 14 03:52:02 fr-paris systemd: *Starting Ceph object storage >> > >> daemon >> > >> osd.3.*.. >> > >> Feb 14 03:52:02 fr-paris systemd: Started Ceph object storage daemon >> > >> osd.3. >> > >> Feb 14 03:52:02 fr-paris numactl: 2017-02-14 03:52:02.307106 >> > >> 7f1e499bb940 >> > >> -1 WARNING: the following dangerous and experimental features are >> > >> enabled: >> > >> bluestore,rocksdb >> > >> Feb 14 03:52:02 fr-paris numactl: 2017-02-14 03:52:02.317687 >> > >> 7f1e499bb940 >> > >> -1 WARNING: the following dangerous and experimental features are >> > >> enabled: >> > >> bluestore,rocksdb >> > >> Feb 14 03:52:02 fr-paris numactl: starting osd.3 at - osd_data >> > >> /var/lib/ceph/osd/ceph-3 /var/lib/ceph/osd/ceph-3/journal >> > >> Feb 14 03:52:02 fr-paris numactl: 2017-02-14 03:52:02.333522 >> > >> 7f1e499bb940 >> > >> -1 WARNING: experimental feature 'bluestore' is enabled >> > >> Feb 14 03:52:02 fr-paris numactl: Please be aware that this feature >> > >> is >> > >> experimental, untested, >> > >> Feb 14 03:52:02 fr-paris numactl: unsupported, and may result in data >> > >> corruption, data loss, >> > >> Feb 14 03:52:02 fr-paris numactl: and/or irreparable damage to your >> > >> cluster. Do not use >> > >> Feb 14 03:52:02 fr-paris numactl: feature with important data. >> > >> >> > >> This seems to happen only in 11.2.0 and not in 11.1.x . Could you >> > >> please >> > >> help us in resolving this issue by means of any config change to >> > >> limit the >> > >> memory use on ceph-osd or a bug in the current kraken release. >> > >> >> > >> Thanks, >> > >> Muthu >> > >> >> > >> _______________________________________________ >> > >> ceph-users mailing list >> > >> ceph-users at lists.ceph.com >> > >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> > >> >> > >> >> > > >> > > >> > > -- >> > > ? ????????? / Best regards >> > > >> > > ???? ?????????? / Ilya Letkouski >> > > >> > > Phone, Viber: +375 29 3237335 >> > > >> > > Minsk, Belarus (GMT+3) >> > > >> > _______________________________________________ >> > ceph-users mailing list >> > ceph-users at lists.ceph.com >> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > > > _______________________________________________ > ceph-users mailing list > ceph-users at lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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