[Clamav-devel] Best way to introduce feature to reduce memory footprint?

[Per Jessen]

Markus Kolb wrote:

> Am 08.09.2019 19:28, schrieb Per Jessen:
>> Markus Kolb wrote:
>> 
>>> Hey,
>>> 
>>> I'd like to get some thoughts of reducing the memory footprint of
>>> clamav (clamd)...
>> 
> [...]
>> MemoryLimit=500M     (for instance)
>> This reduces the working set according to your spec, I have had it
>> running in 300M.  Occasionally a scan will take longer, even up to a
>> minute, but 90% (in my context) are still processed in less than 1
>> sec.
> 
> First thanks, this is a good idea and for my personal use case this
> would do it.
> But this doesn't really reduce the memory footprint.

True, only operationally.  I just thought I would mention it, it's an
elegant solution when you want/need to reduce clamd memory consumption. 

> With e.g. MemoryLimit=300M it is swapping the rest...

Yes, that is the whole point - swap out what isn't actively used. 
Sometimes a scan will take longer, due to swapping in, but that's all.  

> What would happen if there is no swapspace? OOM?

Almost certainly, yes. 



-- 
Per Jessen, Zürich (11.5°C)
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