...creating a hash of words from a CR-delimited list of words. The hash
winds up taking up a few megabytes of RAM, but it's absolutely never
written to, so I figured it would be shared between the mod_perl
processes. However, each process grows by a few megs...
What's the best way to get around th
On Thu, 2005-02-10 at 19:33 -0500, Richard F. Rebel wrote:
> Does this report or help illustrate shared COW pages between apache
> processes?
I certainly though it did, but this work was done by my friend Doug
Steinwand, not by me. I don't really know much more about it, but it
always seemed to w
Ugh, okay.
Last BSD system I really payed much attention to was a BSDI system, and
that was years ago.
There was a simple way to calculate shared memory between processes at
the time in BSD/OS, but alas, I am sure it's somewhat different from
Linux and I surely don't remember it.
On Thu, 2005-0
Hi Perrin,
Does this report or help illustrate shared COW pages between apache
processes? I thought that particular part of /proc//statm reported
the pages potentially shared with other processes as they are part of
dynamically loaded libraries.
On my 2.6 kernel:
bash-2.05b$ echo $$
25964
bash
Arg -- I'm not being specific enough again. Sorry. This is all in
FreeBSD, which I know handles memory much differently than Linux.
Here's a sample line from top:
PID USERNAMEPRI NICE SIZERES STATETIME WCPU
CPU COMMAND
91778 nobody40 13496K 12584K select
On Thu, 2005-02-10 at 18:28 -0500, Richard F. Rebel wrote:
> As far as I know, especially on linux, there is no way to tell exactly
> how 'shared' your apache processes are, except by using apache+mod_perl
> with GTop (and it's associated apache module). I certainly don't know
> of a way to get th
Gosh, I am going to take a crack at this, but it's been a long while. I
know somewhere this stuff is documented. On Linux these things are not
terribly well documented anywhere that I have found.
Okay, the VIRT/VSZ/VSS is the virtual memory size of your process. This
includes all shared pages
Hi Richard,
Sorry -- I should have been more specific:
On Feb 10, 2005, at 4:40 PM, Richard F. Rebel wrote:
How are you detecting that a process is growing by a couple megs?
Via "top" on the command line.
Also, you mention that the processes grow by a couple megs. By this do
you mean that each sub
Hi Ben,
How are you detecting that a process is growing by a couple megs? Are
you looking at the VSS (virtual segment size) because if you are, on
most un*x-es this figure should remain roughly the same despite shared
segments.
Also, you mention that the processes grow by a couple megs. By thi
I don't think I'm getting mod_perl's shared memory scheme yet. I have a
package that gets loaded in my startup.pl, and it basically does this:
use vars qw(%words);
open FILE ...
while {
$words{$_} = 1;
}
close FILE;
...creating a hash of words from a CR-delimited list of words. The hash
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