[Bugs] [Bug 1654642] New: Very high memory usage with glusterfs VFS module

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1654642

            Bug ID: 1654642
           Summary: Very high memory usage with glusterfs VFS module
           Product: GlusterFS
           Version: 3.12
         Component: gluster-smb
          Severity: high
          Assignee: bugs at gluster.org
          Reporter: ryan at magenta.tv
                CC: bugs at gluster.org



Created attachment 1509774
  --> https://bugzilla.redhat.com/attachment.cgi?id=1509774&action=edit
pmap output from Samba PID

Description of problem:
Very high memory usage on all SMB PIDs

Version-Release number of selected component (if applicable):
Samba 4.8.6
Gluster 3.12.14

How reproducible:
Happens overtime, especially when a lot of write operations are occurring on
the node via SMB

Steps to Reproduce:
1.Multiple clients connect to SMB share(s)
2.Copy multiple large files to shares
3.Check PID usage through htop or top
4.Analyse memory allocation via pmap

Actual results:
Over 36GB of memory consumed by one PID

Expected results:
Much lower memory footprint per PID

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