Hi,
I still have my osd memory growing slowly.
Default config, with ssd osd,
start around 5Gb, and after 1-2 months, near 8gb.
(Maybe related to fragmentation ?)
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
ceph 1718009 2.5 11.7 8542012 7725992 ? Ssl 2017 2463:28 /usr/bin/ceph-osd -f --cluster ceph --id 5 --setuser ceph --setgroup ceph
root@ceph4-1:~# ceph daemon osd.5 dump_mempools
{
"bloom_filter": {
"items": 0,
"bytes": 0
},
"bluestore_alloc": {
"items": 98449088,
"bytes": 98449088
},
"bluestore_cache_data": {
"items": 759,
"bytes": 17276928
},
"bluestore_cache_onode": {
"items": 884140,
"bytes": 594142080
},
"bluestore_cache_other": {
"items": 116375567,
"bytes": 2072801299
},
"bluestore_fsck": {
"items": 0,
"bytes": 0
},
"bluestore_txc": {
"items": 6,
"bytes": 4320
},
"bluestore_writing_deferred": {
"items": 99,
"bytes": 1190045
},
"bluestore_writing": {
"items": 11,
"bytes": 4510159
},
"bluefs": {
"items": 1202,
"bytes": 64136
},
"buffer_anon": {
"items": 76863,
"bytes": 21327234
},
"buffer_meta": {
"items": 910,
"bytes": 80080
},
"osd": {
"items": 328,
"bytes": 3956992
},
"osd_mapbl": {
"items": 0,
"bytes": 0
},
"osd_pglog": {
"items": 1118050,
"bytes": 286277600
},
"osdmap": {
"items": 6073,
"bytes": 551872
},
"osdmap_mapping": {
"items": 0,
"bytes": 0
},
"pgmap": {
"items": 0,
"bytes": 0
},
"mds_co": {
"items": 0,
"bytes": 0
},
"unittest_1": {
"items": 0,
"bytes": 0
},
"unittest_2": {
"items": 0,
"bytes": 0
},
"total": {
"items": 216913096,
"bytes": 3100631833
}
}
----- Mail original -----
De: "Tzachi Strul" <tzachi.strul@xxxxxxxxxxx>
À: "ceph-users" <ceph-users@xxxxxxxx>
Envoyé: Samedi 10 Février 2018 11:44:40
Objet: Does anyone else still experiancing memory issues with 12.2.2 and Bluestore?
Hi,
I know that 12.2.2 should have fixed all memory leak issues with bluestore but we still experiencing some odd behavior.
Our osd flaps once in a while... sometimes it doesn't stop until we restart all osds on all nodes/on the same server...
in our syslog we see messages like this "failed: Cannot allocate memory" on all kind of processes...
In addition, sometimes we get this error while trying to work with ceph commands:
Traceback (most recent call last):
File "/usr/bin/ceph", line 125, in <module>
import rados
ImportError: libceph-common.so.0: cannot map zero-fill pages
seems like a memory leak issue...when we restart all osds this behavior stops for few hours/days.
we have 8 osd servers with 16 ssd disks on each and 64GB of ram. bluestore cache set to default (3GB for ssd)
the result is our cluster is almost constantly in rebuilds and that impacts performance.
root@ecprdbcph10-opens:~# ceph daemon osd.1 dump_mempools
{
"bloom_filter": {
"items": 0,
"bytes": 0
},
"bluestore_alloc": {
"items": 5105472,
"bytes": 5105472
},
"bluestore_cache_data": {
"items": 68868,
"bytes": 1934663680
},
"bluestore_cache_onode": {
"items": 152640,
"bytes": 102574080
},
"bluestore_cache_other": {
"items": 16920009,
"bytes": 371200513
},
"bluestore_fsck": {
"items": 0,
"bytes": 0
},
"bluestore_txc": {
"items": 3,
"bytes": 2160
},
"bluestore_writing_deferred": {
"items": 33,
"bytes": 265015
},
"bluestore_writing": {
"items": 19,
"bytes": 6403820
},
"bluefs": {
"items": 303,
"bytes": 12760
},
"buffer_anon": {
"items": 32958,
"bytes": 14087657
},
"buffer_meta": {
"items": 68996,
"bytes": 6071648
},
"osd": {
"items": 187,
"bytes": 2255968
},
"osd_mapbl": {
"items": 0,
"bytes": 0
},
"osd_pglog": {
"items": 514238,
"bytes": 152438172
},
"osdmap": {
"items": 35699,
"bytes": 823040
},
"osdmap_mapping": {
"items": 0,
"bytes": 0
},
"pgmap": {
"items": 0,
"bytes": 0
},
"mds_co": {
"items": 0,
"bytes": 0
},
"unittest_1": {
"items": 0,
"bytes": 0
},
"unittest_2": {
"items": 0,
"bytes": 0
},
"total": {
"items": 22899425,
"bytes": 2595903985
}
}
Any help would be appreciated.
Thank you
--
Tzachi Strul
Storage DevOps // Kenshoo
Office +972 73 2862-368 // Mobile +972 54 755 1308
[ http://kenshoo.com/ ]
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