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Date:      Fri, 24 Feb 2006 13:07:45 -0800
From:      Jason Evans <jasone@freebsd.org>
To:        Mike Jakubik <mikej@rogers.com>
Cc:        freebsd-current@freebsd.org, Peter Fraser <petros.fraser@gmail.com>, Mark Kirkwood <markir@paradise.net.nz>
Subject:   Re: Virtual memory consumption (both user and kernel) in modern CURRENT
Message-ID:  <06424916-2FC9-4A31-A109-654682BFC1C4@freebsd.org>
In-Reply-To: <43FE9370.8000209@rogers.com>
References:  <aa2cc130602231241u15e464bcu848a4aef2998c50f@mail.gmail.com> <43FE6DBD.5000006@paradise.net.nz> <2154.FgtQRFVGBkU=.1140749016.squirrel@172.16.0.1> <43FE7800.4040808@paradise.net.nz> <43FE9370.8000209@rogers.com>

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On Feb 23, 2006, at 9:02 PM, Mike Jakubik wrote:
> Mark Kirkwood wrote:
>> Mike Jakubik wrote:
>>> On Thu, February 23, 2006 9:21 pm, Mark Kirkwood wrote:
>>>
>>>
>>>> The most likely culprit is the fact that redzones are enabled at  
>>>> the
>>>> moment in -CURRENT.
>>>>
>>>> On that note, Mike - did you try turning them off?
>>>
>>>
>>> Yes, it lowered my swap space usage from 40MB to 1MB. Which is  
>>> certainly
>>> better, but even before, my system used no swap.
>>>
>>
>> Hmm, that's not so great - any idea about how much free memory you  
>> had using the old malloc?
>>
>> I'm interested, as I run 6.0R on a PIII with 512MB RAM and have  
>> (right now) 193MB free, that's with Enlightment, Firefox,  
>> Thunderbird, xmms, and several Eterms running - so needless to say  
>> it runs great. I'm wondering what the situation will look like  
>> with -CURRENT....
>
> Nope, and i don't really feel like backing out malloc and  
> recompiling world now  :P Basically, i had bit more free memory,  
> but i suggest you stick with 6.x, unless you don't mind testing a  
> development branch.

I did some quick experiments last night, where I booted a -current  
system with phkmalloc, then with jemalloc.  The total increase in  
resident memory was negligible, on the order of kilobytes.

Jason




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