shared memory release...

[Tim Traver]

Hi all,

Ok, I am running a 4.7 FreeBSD box that is a web server running apache.

It looks like some module that I have is leaking memory, and eventually, 
apache crashes on restarts becuase of this error :

shmget() failed:  No space left on device

which means it can't get any more memory, which I understand.

When I look at the top list, it shows me something like this :

Mem: 140M Active, 879M Inact, 151M Wired, 181M Cache, 199M Buf, 660M Free

But when you look at the processes that are still up, they hardly take up 
any memory.

So, my question is this.

Is there a way to free up Inactive memory from crashed processes ???

Without just rebooting the box ???

I know that I need to find the source of the leaking and crashing to begin 
with, but in the mean time, if it happens, I'd like to free up the memory 
manually, so I can get the box running again...

Thanks,

Tim.

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Re: shared memory release...

[Chuck Swiger]

Tim Traver wrote:
Ok, I am running a 4.7 FreeBSD box that is a web server running apache.

It looks like some module that I have is leaking memory, and eventually, 
apache crashes on restarts becuase of this error :

shmget() failed:  No space left on device

which means it can't get any more memory, which I understand.
SysV shared memory is a limited resource which has tunables you need to set or 
adjust in your kernel config file.  It's not the same as physical RAM.

When I look at the top list, it shows me something like this :

Mem: 140M Active, 879M Inact, 151M Wired, 181M Cache, 199M Buf, 660M Free
top is measuring something else, here.

--
-Chuck
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