[Bug 306293] [NEW] Mod_ssl randomly causes apache threads to use 100% of CPU

Yann Hamon yann at mandragor.org
Mon Dec 8 18:45:27 GMT 2008


Public bug reported:

Using apache2 on Ubuntu 8.04 as a reverse proxy. Has been working fine
for the last 6 months. I started recently (last 2 weeks) to enable SSL
for some vhosts. Since then I have randomly apache processes using all
the CPU.


www-data  1332 17641  0 12:38 ?        00:00:00 /usr/sbin/apache2 -k restart
www-data  1333 17641 69 12:38 ?        04:16:50 /usr/sbin/apache2 -k restart
www-data  1336 17641  0 12:38 ?        00:00:18 /usr/sbin/apache2 -k restart

Strace isn't of any help:

yhamon at http-proxy:/var/log$ sudo strace -p 1333
Process 1333 attached - interrupt to quit
read(5,  <unfinished ...>

(nothing happens).

I haven't been able to find any information about this on the internet
so far. Please tell me how I can provide more useful data....

** Affects: apache2 (Ubuntu)
     Importance: Undecided
         Status: New

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Mod_ssl randomly causes apache threads to use 100% of CPU
https://bugs.launchpad.net/bugs/306293
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