Profiling GlusterFS FUSE client with Valgrind's Massif tool

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Hello.

While dancing around huge memory consumption by FUSE client [1], I was suggested by Pranith to use Massif tool to find out the reason of the leak.

Unfortunately, it does not work for me properly, and I believe I do something wrong.

Instead of generating report after unmounting volume or sigterming glusterfs process, Valgrind generates 2 reports (for 2 PIDs) just right after launch, and does not update them further, even on exit. I believe, that is because something is going on with forking, but I cannot figure out, what's going wrong.

The command I use to launch GlusterFS via Valgrind+Massif:

===
valgrind --tool=massif --trace-children=yes /usr/sbin/glusterfs -N --volfile-server=server.example.com --volfile-id=test /mnt/net/glusterfs/test
===

Any ideas or sample usecases for Massif+GlusterFS?

Thanks.

Regards,
  Oleksandr

[1] https://bugzilla.redhat.com/show_bug.cgi?id=1369364
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