Summary: | CPU consumption due to circular linked list in ap_core_input_filter() | ||
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Product: | Apache httpd-2 | Reporter: | venkatunix02 |
Component: | Core | Assignee: | Apache HTTPD Bugs Mailing List <bugs> |
Status: | RESOLVED LATER | ||
Severity: | normal | Keywords: | MassUpdate |
Priority: | P2 | ||
Version: | 2.2.15 | ||
Target Milestone: | --- | ||
Hardware: | HP | ||
OS: | HP-UX | ||
Attachments: |
trace
log of top and tusc(syscalls) Mapping between stack trace, source code and itanium assembly code |
Description
venkatunix02
2014-01-20 03:51:45 UTC
Created attachment 31228 [details]
trace
Created attachment 31229 [details]
log of top and tusc(syscalls)
Created attachment 31230 [details]
Mapping between stack trace, source code and itanium assembly code
What compiler and APR versions are you using ? If the former is gcc, can you compile with option "-fno-strict-aliasing" and see if it helps ? (In reply to Yann Ylavic from comment #4) > What compiler and APR versions are you using ? > > If the former is gcc, can you compile with option "-fno-strict-aliasing" and > see if it helps ? Thanks for checking this. We use HP C compiler and APR version is 1.4. The attachment 31230 [details] suggests you use APR <= 1.4.2 (without this fix http://svn.apache.org/viewvc?view=revision&revision=1074877). struct apr_bucket_brigade { apr_pool_t *p; struct apr_bucket_list { struct apr_bucket *next; struct apr_bucket *prev; }list; apr_bucket_alloc_t *bucket_alloc; } should be (from APR 1.4.3+) : struct apr_bucket_brigade { apr_pool_t *p; struct apr_bucket_list { struct apr_bucket * volatile next; struct apr_bucket * volatile prev; }list; apr_bucket_alloc_t *bucket_alloc; } Can you upgrade to the latest APR 1.4.8 and see if it helps? Please help us to refine our list of open and current defects; this is a mass update of old and inactive Bugzilla reports which reflect user error, already resolved defects, and still-existing defects in httpd. As repeatedly announced, the Apache HTTP Server Project has discontinued all development and patch review of the 2.2.x series of releases. The final release 2.2.34 was published in July 2017, and no further evaluation of bug reports or security risks will be considered or published for 2.2.x releases. All reports older than 2.4.x have been updated to status RESOLVED/LATER; no further action is expected unless the report still applies to a current version of httpd. If your report represented a question or confusion about how to use an httpd feature, an unexpected server behavior, problems building or installing httpd, or working with an external component (a third party module, browser etc.) we ask you to start by bringing your question to the User Support and Discussion mailing list, see [https://httpd.apache.org/lists.html#http-users] for details. Include a link to this Bugzilla report for completeness with your question. If your report was clearly a defect in httpd or a feature request, we ask that you retest using a modern httpd release (2.4.33 or later) released in the past year. If it can be reproduced, please reopen this bug and change the Version field above to the httpd version you have reconfirmed with. Your help in identifying defects or enhancements still applicable to the current httpd server software release is greatly appreciated. |