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
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