Comment 13 for bug 416990

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John A Meinel (jameinel) wrote : Re: [Bug 416990] Re: Memory usage of codehosting processes is excessive

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Tom Haddon wrote:
> On Wed, 2009-08-26 at 20:44 +0000, John A Meinel wrote:
> John A Meinel wrote:
> ...
>>>> 5) Individually no process seems to be more that 7-800MB, but since you
>>>> have several running at once, it adds up.
> So in doing a local bzr:// branch of a mysql-5.1 repo, I see the server
> hit a peak of 299MB, and the client hit a peak of 178MB. (using
> python2.5 and 4595.
>> Can you do the same with the versions we're using for LP (of python and
>> bzr) to confirm there's a difference and not just that it's a difference
>> of environment?

I cannot trivially do so.

Assuming you are using bzr 1.17 on LP, we don't really have any idea
what version the client is, without a log. But we could also assume 1.17
for now.

Going further, I'm also not using the exact same branch. I'm using a
mysql-5.1 not mysql-maria. Nor will it have exactly the same
packs-on-disk layout, etc.

But the real reason is that for whatever reason python2.4 doesn't like
my bzr. In fact my python 2.4 has some real problems:

$ python2.4 -c 'import locale'
Traceback (most recent call last):
  File "<string>", line 1, in ?
ImportError: No module named locale

Maybe I'll look closer at it tomorrow, but I'd rather just look at the
current situation.

I just realized... if you have 8GB of ram you almost certainly are
running a 64-bit platform. And memory consumption on 64-bit python is
pretty much always 2x. Not exactly, but it gives a really good ballpark.
(Almost every object is a pointer or a 'long' both of which go from
32-bit => 64-bit...)

So probably my 299MB fits the 540MB resident that you were seeing.

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