Bug 674552
Summary: | ksh memory leak significantly slows the execution of shell scripts | ||
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Product: | Red Hat Enterprise Linux 5 | Reporter: | RHEL Program Management <pm-rhel> |
Component: | ksh | Assignee: | Michal Hlavinka <mhlavink> |
Status: | CLOSED ERRATA | QA Contact: | BaseOS QE - Apps <qe-baseos-apps> |
Severity: | urgent | Docs Contact: | |
Priority: | urgent | ||
Version: | 5.5 | CC: | bnater, bz-reply, cww, gbarros, jwest, kvolny, mhlavink, mpoole, ovasik, pm-eus, tao, tsmetana |
Target Milestone: | rc | Keywords: | Patch, ZStream |
Target Release: | --- | ||
Hardware: | All | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: |
Due to a memory leak in the ksh executable, the performance of long running scripts could decrease significantly over the time. With this update, the underlying source code has been modified to prevent this memory leak, and the execution of long running scripts is no longer slowed down.
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Story Points: | --- |
Clone Of: | Environment: | ||
Last Closed: | 2011-02-28 09:52:01 UTC | Type: | --- |
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: | 586923 | ||
Bug Blocks: |
Description
RHEL Program Management
2011-02-02 13:31:51 UTC
Technical note added. If any revisions are required, please edit the "Technical Notes" field accordingly. All revisions will be proofread by the Engineering Content Services team. New Contents: Due to a memory leak in the ksh executable, the performance of long running scripts could decrease significantly over the time. With this update, the underlying source code has been modified to prevent this memory leak, and the execution of long running scripts is no longer slowed down. Bugfix was successfully verified on ksh-20100202-1.el5_6.3 package on all architectures (i386, ia64, ppc, s390x, x86-64). Loop time doesn't increase (see bellow) # rpm -q ksh ksh-20100202-1.el5_6.3.i386 ksh version: Version AJM 93t+ 2010-02-02 +-------------- pass number | +- current loop time/1st loop time | | process size --------------------------------------+ | | total time in seconds ----------------+ | | | current loop time + | | | | | | | \ / \ / \ / \ / \ / p# 1: cur/1st= 1.00; loop(secs)= 1.87; total(secs)= 1.87; RSS=0001444 p# 2: cur/1st= 1.00; loop(secs)= 1.86; total(secs)= 3.73; RSS=0001452 p# 3: cur/1st= 1.00; loop(secs)= 1.86; total(secs)= 5.59; RSS=0001452 p# 4: cur/1st= 1.01; loop(secs)= 1.89; total(secs)= 7.48; RSS=0001452 p# 5: cur/1st= 1.01; loop(secs)= 1.89; total(secs)= 9.37; RSS=0001452 p# 6: cur/1st= 1.01; loop(secs)= 1.89; total(secs)= 11.27; RSS=0001452 p# 7: cur/1st= 1.01; loop(secs)= 1.89; total(secs)= 13.16; RSS=0001452 p# 8: cur/1st= 1.01; loop(secs)= 1.89; total(secs)= 15.06; RSS=0001452 p# 9: cur/1st= 1.01; loop(secs)= 1.89; total(secs)= 16.95; RSS=0001452 p# 10: cur/1st= 1.01; loop(secs)= 1.89; total(secs)= 18.84; RSS=0001452 An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on therefore solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2011-0304.html |