Re: [Devil-linux-develop] systems with low memory

[Heiko Z. <he...@zu...>]

Friedrich Lobenstock wrote:

> Heiko Zuerker wrote on 06.09.2004 16:51 MET:
>
>> Heiko Zuerker wrote:
>>
>>> Hey guys,
>>>
>>> I was just thinking if we should modify all the tar commands we use 
>>> in DL (save-config, init system) to work better on low memory systems.
>>> According to 'man bunzip2' the '-s' parameter should help us, but 
>>> will at least take twice as long.
>>>
>>> Without this modification, DL 1.2 will not run on 32 MB systems.
>>>
>>> What do you think? I think we should do it.
>>
>>
>>
>>
>> I just finished my testing and checked in the changes into the 1.2 
>> tree. 1.3 will come later, I have to finish first the test compile.
>>
>> I didn't not add any intelligence to use he '-s' flag only on low 
>> memory systems, since the performance impact is much less then I 
>> initially thought.
>> The archives are so small, that it doesn't take much longer to unpack 
>> them. We still can add this if we have to, but I would suggest to 
>> wait and see.
>> Biggest impact was the removal of the clamav virus signatures and the 
>> squidguard blacklists.
>>
>> DL can now boot again with only 20 MB of RAM !
>> I'm sure we could bring it down to 16, but that's not the goal of DL. 
>> So the official minimum will be 32 MB.
>
>
> Another hint for 32MB systems is to disable jailing for bind as that 
> will save you about 12 MB of RAM which is "wasted" by the jail.
>
> I had to do this to get 1.2RC1 working correctly with 32 MB.
>
Yes this is a good point, all the chroot jails need a lot of RAM !

-- 

Regards
  Heiko Zuerker
  http://www.devil-linux.org