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Bug #51158 abnormal memory consumption during build of 5.3.1 (and 5.3.0)
Submitted: 2010-02-26 16:44 UTC Modified: 2010-02-26 16:50 UTC
Votes:1
Avg. Score:5.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:1 (100.0%)
Same OS:1 (100.0%)
From: stolen dot data dot net at gmail dot com Assigned:
Status: Wont fix Package: Compile Failure
PHP Version: 5.3.1 OS: openbsd
Private report: No CVE-ID: None
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 [2010-02-26 16:44 UTC] stolen dot data dot net at gmail dot com
Description:
------------
tried to migrate from 5.2.10 to 5.3.1 today on my server running openbsd  
4.6. building php 5.3.1 (as well as 5.3.0) eats an abnormal amount of 
memory - far more than 750mb - actually leading to my machine being 
exhausted and crashing beyond recovery. it's equipped with 512mb of RAM 
and has 256mb of swap available, but even this was not enough. at a 
certain stage in compiling, all of it is consumed in less than 2-3 
seconds, even when running in single-user mode to have as much of the 
memory as possible free and available.

this does not happen with the 5.2.x branch (i even tried the latest 
5.2.13). it does not even come close to using 300mb of RAM during 
building, using the exact same configuration parameters.


Reproduce code:
---------------
./configure --prefix=/usr/opt/php --with-apxs=/usr/opt/apache/bin/apxs --enable-sqlite-utf8 --with-zlib --with-mcrypt --enable-mbstring --disable-xmlreader --disable-xmlwriter --without-pear --disable-libxml --disable-dom --disable-simplexml --disable-xml --disable-phar

make


Expected result:
----------------
well...

Actual result:
--------------
beyond 750mb of ram required; machine crashes when swap memory is 
exhausted

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 [2010-02-26 16:50 UTC] rasmus@php.net
Sorry, optimizing memory during the build isn't something we can worry 
about.  Even my tiny $300 Netbook here has 2G of ram.  If you can't 
find a machine to build on with enough ram, you will have to build with 
-O0 which should make it build for you.  Of course, it won't be as 
fast.
 
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