Atomicorp

Hmm... but thinking about it, Scott has httpd-debuginfo installed and he was still getting segfaults.

However, I think it may be related to moving bits of memory around, and the amount of memory installed and stuff like that.

Faris.

aus-city wrote:Its STILL behaving

This is the only time I can remember where some one reported that something was working with a frown :p

Haha we were trying to get a repeatable environment of it crashing so we could test fixes.

I think I can add a little more info now, though in a relatively non-technical and somewhat "guessful" way.

From my monitoring of memory usage and segfaults, it would appear that one possible cause of the problem is that apache is failing to release memory it no longer needs, or at any rate is getting confused when it comes to memory.

Where this comes into the equation, and why adding the debug stuff solves the problem for some people is beyond my knowledge.


Faris.

faris,

Its still behaving with the debug running - go figure it must be changing the memory enough its not happening anymore.

Are you guys using the httpd-2.2.3-11.el5_2.centos.4 build ?

No.

I'm on httpd-2.0.63-2.el4s1.centos.2 for these particular ones.

I think this is from the centosplus repo (for centos 4)

Faris.

are you able to use the 2.2.x branch on centos/rhel 4 or are you limited to 2.0 ?

is the problem only occuring on 2.0 ?

neat, I hadn't been tracking the 2.2.x packages for C4. Does that work with Plesk?

We are starting to see segfaults again, but only occasionally. I had put a freeze on updating the rules since this started, but recently did some updates.

Although I'm still disabling the domain-blacklists I guess the other rules files have increased in size or complexity since I last updated.

Over the weekend I'm going to try adding the debug thing to see if that helps.

There also seems to be a new version of httpd for centos. Who knows, that may also help.

Faris.

scott wrote:neat, I hadn't been tracking the 2.2.x packages for C4. Does that work with Plesk?

Seems to work ok. I get only a couple of seg faults across a lot of servers and am not sure it even applies to this situation.

Thats awesome, where did that come from, centosplus?

What apache modules are you using? We've found that mod_memcache definitely causes this to happen on all systems its used on.

removing mod_memcache doesn't seem to have any effect with respect to the segfaults on VPSes.

And as I recall it didn't have any effect on hostinguy's dedicated server either.

And does this only happen with VPS systems?