May I ask for self-education, how did you conclude memory leak, based on
that, I guess, 'ps' output?
--
Mykola Ivanets
пн, 10 серп. 2020, 10:48 користувач Richard W.M. Jones <rjones(a)redhat.com>
пише:
I'm using nbdkit + the file plugin to serve NBD root filesystems
for
some machines, so I get to observe how it behaves for very long runs.
I think this indicates a memory leak?
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
5038 root 20 0 4577220 16000 796 S 0.0 0.1 30:52.40 nbdkit
5592 root 20 0 4159224 11708 784 S 0.0 0.1 22:21.67 nbdkit
Not sure how to easily diagnose this. My thought was to force a
coredump by sending a signal, but I don't know if these processes have
a suitable rlimit. I could also attach gdb. Perhaps by looking at a
dump of the memory we could get an idea of what structure leaks.
Unfortunately also it's a very old version:
$ rpm -qf /usr/sbin/nbdkit
nbdkit-1.8.0-1.el7.x86_64
Rich.
--
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