Mailing List Archive: Apache: Bugs

[Bug 44948] mod_substitute has a memory leak

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bugzilla at apache

May 7, 2008, 8:09 AM

Post #1 of 4 (107 views)
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[Bug 44948] mod_substitute has a memory leak

https://issues.apache.org/bugzilla/show_bug.cgi?id=44948

Ruediger Pluem <rpluem[at]apache.org> changed:

What |Removed |Added
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Status|NEW |NEEDINFO

--- Comment #1 from Ruediger Pluem <rpluem[at]apache.org> 2008-05-07 08:09:50 PST ---
What does happen if you do

./ab -n 200 -c 1 http://localhost:8082/foo.html
./ab -n 200 -c 25 http://localhost:8082/foo.html
./ab -n 200 -c 100 http://localhost:8082/foo.html

again? Does the memory consumption still grow?

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bugzilla at apache

May 9, 2008, 8:15 AM

Post #2 of 4 (96 views)
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[Bug 44948] mod_substitute has a memory leak [In reply to]

https://issues.apache.org/bugzilla/show_bug.cgi?id=44948

thomas wolfart <karoshi[at]gmx.net> changed:

What |Removed |Added
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Status|NEEDINFO |ASSIGNED

--- Comment #2 from thomas wolfart <karoshi[at]gmx.net> 2008-05-09 08:15:11 PST ---
./ab -n 200 -c 1 http://localhost:8082/foo.html
1st run: 7 -> 14 MB
2nd run: stays at 14 MB
3rd run: stays at 14 MB

./ab -n 200 -c 25 http://localhost:8082/foo.html
1st run: 7 -> 71 MB
2nd run: 71 -> 74 MB
3rd run: stays at 74 MB

./ab -n 200 -c 100 http://localhost:8082/foo.html
1st run: 7 -> 155 MB
2nd run: 155 -> 155 MB
3rd run: 155 -> 155 MB

Memory usage after the end of the ab call did not exceed 155 MB. Max memory
usage during test was about 390 MB.

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bugzilla at apache

May 9, 2008, 2:39 PM

Post #3 of 4 (92 views)
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[Bug 44948] mod_substitute has a memory leak [In reply to]

https://issues.apache.org/bugzilla/show_bug.cgi?id=44948

--- Comment #3 from Ruediger Pluem <rpluem[at]apache.org> 2008-05-09 14:39:45 PST ---
Ok, this means that we do not have a leak here as the memory is reused by httpd
later on. httpd only does not pass back the memory it used once back to the OS
which is quite normal for all parts of httpd. It might still be worth to
examine the overall memory consumption of mod_substitute for the case you
described. OTOH your numbers show that the memory consumption does not grow
linear with the number of parallel requests but lower which is a good sign IMHO
:-)

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bugzilla at apache

May 9, 2008, 6:55 PM

Post #4 of 4 (92 views)
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[Bug 44948] mod_substitute has a memory leak [In reply to]

https://issues.apache.org/bugzilla/show_bug.cgi?id=44948

Takashi Sato <takashi[at]lans-tv.com> changed:

What |Removed |Added
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CC| |takashi[at]lans-tv.com

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