Bug 1180130
| Summary: | Files creates are very slow in directories already having files in it. | ||
|---|---|---|---|
| Product: | [Red Hat Storage] Red Hat Gluster Storage | Reporter: | Raghavendra Talur <rtalur> |
| Component: | samba | Assignee: | Raghavendra Talur <rtalur> |
| Status: | CLOSED ERRATA | QA Contact: | surabhi <sbhaloth> |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 2.1 | CC: | amainkar, divya, nlevinki, psriniva, rcyriac, rtalur, sbhaloth, surs, vagarwal |
| Target Milestone: | --- | Keywords: | ZStream |
| Target Release: | RHGS 2.1.6 | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | samba-3.6.9-167.10.1.el6rhs | Doc Type: | Bug Fix |
| Doc Text: |
Previously, creating a new file over the SMB protocol, took a long time if the parent directory had many files in it. This was due to a bug in an optimization made to help SMB to ignore case comparison of requested file name with every entry in the directory. With this fix, the time taken to create a new file over the SMB protocol takes lesser time, even if the parent directory has many files in it.
|
Story Points: | --- |
| Clone Of: | 1175088 | Environment: | |
| Last Closed: | 2015-01-28 10:44:11 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 1086681, 1176659, 1322735 | ||
|
Comment 2
Raghavendra Talur
2015-01-08 17:49:16 UTC
Creating a new file on samba share where already 120000 files existed, time taken is as follows:
2.1U5
*************
PS X:\> Measure-command {type NUL > X:\file120005.txt}
Days : 0
Hours : 0
Minutes : 0
Seconds : 12
Milliseconds : 186
Ticks : 121864982
TotalDays : 0.00014104743287037
TotalHours : 0.00338513838888889
TotalMinutes : 0.203108303333333
TotalSeconds : 12.1864982
TotalMilliseconds : 12186.4982
***************************************************************
2.1U6:
*******************
PS X:\> Measure-command {type NUL > X:\file120006.txt}
Days : 0
Hours : 0
Minutes : 0
Seconds : 2
Milliseconds : 409
Ticks : 24097314
TotalDays : 2.78904097222222E-05
TotalHours : 0.000669369833333333
TotalMinutes : 0.04016219
TotalSeconds : 2.4097314
TotalMilliseconds : 2409.7314
*******************************************************************
On windows client (2.1U6)the performance improvement is 6 times better than 2.1 U5.
On Linux cifs client the results are as follows : with case sensitive=yes for the share:
*******************************************************************
2.1 U6:
# time touch file120003
real 0m1.049s
user 0m0.000s
sys 0m0.002s
2.1U5:
*****
# time touch cifsfile120002
real 0m1.454s
user 0m0.000s
sys 0m0.004s
************************************************************************
Performance is improved by 6x from U5 to U6 for create.
Moving the BZ to verified.
The doc text looks good to me. Credit is not mine, the doc text had been through edit once for 3.0 bug. Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://rhn.redhat.com/errata/RHBA-2015-0095.html |