Bug 1126837

Summary: Performance degradation in SMB over VFS when compared to FUSE
Product: [Community] GlusterFS Reporter: Poornima G <pgurusid>
Component: libgfapiAssignee: Poornima G <pgurusid>
Status: CLOSED EOL QA Contact: Sudhir D <sdharane>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 3.5.2CC: bugs
Target Milestone: ---Keywords: Triaged
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Hardware: Unspecified   
OS: Unspecified   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2016-06-17 15:58:07 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Poornima G 2014-08-05 12:06:12 UTC
Description of problem:
Directory listing under CIFS is very slow

Customer has tried in both glusterfs fuse and SMB:

Under glusterfs a ls -ltR to a specific directory took 1.5 seconds and 53 under cifs.

and in other test

Glusterfs: 0.9s
Samba share to local filesystem: 3.8s
Samba share to gluster filesystem: 18s

Version-Release number of selected component (if applicable):


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Comment 1 Poornima G 2014-08-05 12:08:17 UTC
The getxattrs are being called for user.dosattributes. If the customer is not
interested in using the dos attributes which are: hidden, read-only, system and archive. (Thats the one which shows on the first tab of the file properties tab in Windows.) then they can disable it and see good performance improvement with listing of the directories.

NOTE: We have not tested this workaround and listed its impact. If it is a POC on the customer side and they are willing to try , you may suggest this.

steps:
1. Change yes to no in "store dos attributes = yes" in /etc/samba/rhs-samba.conf.
2. service smb restart.
3. Perform the same test again from the client.

But the lookup are still huge in number 5000 for 3000 lookups, where as in FUSE it is ~16 lookups.

Comment 2 Niels de Vos 2016-06-17 15:58:07 UTC
This bug is getting closed because the 3.5 is marked End-Of-Life. There will be no further updates to this version. Please open a new bug against a version that still receives bugfixes if you are still facing this issue in a more current release.