MDS heap stats standby threads
Hello I am have a problem with heap stats (dump, start_profiler, stop_profiler) command:
When I run it - i get some results, but ceph-mds create 4 new threads and don't exit it, so if I call
ceph tell mds.a heap stats every 10 seconds after 5-6 hours I had 4000+ threads and cluster slow down.
in ceph-mds log i had a lot of:
2015-12-10 15:39:00.121346 7f6187fe6700 0 -- 10.10.10.11:6800/25374 >> 10.10.10.11:0/1766420499 pipe(0x7f61972f8000 sd=17 :6800 s=2 pgs=2 cs=1 l=0 c=0x7f6197194b00).fault, server, going to standby
2015-12-10 15:39:00.152101 7f6187de4700 0 -- 10.10.10.11:6800/25374 >> 10.10.10.11:0/1665626131 pipe(0x7f61972fd000 sd=18 :6800 s=2 pgs=2 cs=1 l=0 c=0x7f6197194dc0).fault, server, going to standby
I was try versions: 0.94.3, 0.94.5, 9.2 on all same picture.
I was try for other daemons (osd and mon) and it's work nice, but not for mds
mds: tear down connections from `tell` commands
We can identify sessions that were never really
opened, just created when a client sent in
a 'tell' message. When we see one of those, mark
the associated connection disposable when responding
to the command.