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Posted to dev@tomcat.apache.org by bu...@apache.org on 2019/12/03 04:39:52 UTC
[Bug 63983] New: Jasper builds-up open files until garbage
collection, hitting Linux default limit of 4096.
https://bz.apache.org/bugzilla/show_bug.cgi?id=63983
Bug ID: 63983
Summary: Jasper builds-up open files until garbage collection,
hitting Linux default limit of 4096.
Product: Tomcat 9
Version: 9.0.29
Hardware: PC
OS: Linux
Status: NEW
Severity: critical
Priority: P2
Component: Jasper
Assignee: dev@tomcat.apache.org
Reporter: support@aoindustries.com
Target Milestone: -----
Starting with Tomcat 9.0.29 (but not 9.0.27, and fixed by reverting), the Java
process builds-up open files until hitting the Linux default limit of 4096.
lsof shows that the files are all those that would be checked when determining
if a JSP file needs to be recompiled (the JSP file, its includes, and all
related *.tld files).
With "development=true" (the default), the files build-up in proportion to the
request load. With "development=false", the files build-up more consistently
(around 100 files every 10 seconds in our case).
When a garbage collection occurs, the open file count drops back to around 100.
With our heap-space of 1024 MB, combined with some include-heavy JSP pages, we
run out of file handles before garbage collection, and requests fail with
errors.
We increased the limits in /etc/security/limits.conf as a workaround, but the
fix was to downgrade to Tomcat 9.0.27.
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[Bug 63983] Jasper builds-up open files until garbage collection,
hitting Linux default limit of 4096.
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=63983
Mark Thomas <ma...@apache.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|NEW |RESOLVED
--- Comment #2 from Mark Thomas <ma...@apache.org> ---
Fixed in:
- master for 9.0.30 onwards
- 8.5.x for 8.5.50 onwards
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[Bug 63983] Jasper builds-up open files until garbage collection,
hitting Linux default limit of 4096.
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=63983
Dan Armstrong <su...@aoindustries.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |VERIFIED
--- Comment #3 from Dan Armstrong <su...@aoindustries.com> ---
I have confirmed this issue is resolved during our updates to Tomcat 9.0.30.
Thank you for your help.
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[Bug 63983] Jasper builds-up open files until garbage collection,
hitting Linux default limit of 4096.
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=63983
--- Comment #1 from Mark Thomas <ma...@apache.org> ---
Thanks for the report. This is another regression in the fix for the race
condition in JSP compilation that meant Jasper would see a modified JSP but
then process stale content for that file from the static resource cache.
I think I can address this with my favourite kind of fix (deleting some code)
but I want to run a few more tests before I commit the fix.
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[Bug 63983] Jasper builds-up open files until garbage collection,
hitting Linux default limit of 4096.
Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=63983
Mark Thomas <ma...@apache.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |simone.lucidi@eng.it
--- Comment #4 from Mark Thomas <ma...@apache.org> ---
*** Bug 64857 has been marked as a duplicate of this bug. ***
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