[mythtv-users] A few 0.19 and RAM questions

[Andrew Ingram]

> On 2/6/06, Mark Hetherington <redcane at dodo.com.au> wrote:
> > I'm not an expert on this, so this is mostly a matter of what I 
> > believe to be true, but perhaps is not particularly accurate.
> > I think no matter how much RAM you have, linux will still use some 
> > swap. I think it's partly so it can have stuff already swapped out, 
> > even if it is in RAM as well, so it doesn't take as long to 
> swap when 
> > needed. I'm fairly certain 512Mb is sufficient unless your 
> looking at multiple encoders.
> 
> top - 20:54:22 up 7 days, 23:10,  3 users,  load average: 
> 2.38, 2.17, 2.04
> Tasks: 122 total,   5 running, 117 sleeping,   0 stopped,   0 zombie
> Cpu(s):  1.3% us,  6.7% sy, 90.3% ni,  0.0% id,  0.0% wa,  
> 0.0% hi,  1.7% si
> Mem:   1296740k total,  1273420k used,    23320k free,     
> 2388k buffers
> Swap:  1301256k total,    87264k used,  1213992k free,   
> 938236k cached
> 
> That's my top output and as you can see the system is using a 
> little bit of swap.. even though I have some free ram.
> 
> I'd have agree with the statement above about linux will 
> always use a little bit of swap.

I'm not so sure. Here is my box:

top - 17:16:17 up 1 day, 17:14,  2 users,  load average: 1.03, 1.02, 1.00
Tasks: 114 total,   1 running, 113 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.2% us,  0.3% sy,  0.0% ni, 99.5% id,  0.0% wa,  0.0% hi,  0.0% si
Mem:    512432k total,   453508k used,    58924k free,   145912k buffers
Swap:   979924k total,        0k used,   979924k free,    90660k cached

Admittedly, my box had a reboot and has only been up for just over 41 hours,
but it's 2 tuners have been recording and playing back quite a bit in that
time.

Andy