tech-kern archive

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]

Re: where is my memory?



On Tue, Sep 21, 2010 at 5:38 PM, Matthew Mondor
<mm_lists%pulsar-zone.net@localhost> wrote:
> On Sun, 19 Sep 2010 15:13:59 -0400
> matthew sporleder <msporleder%gmail.com@localhost> wrote:
>
>> So I've recently been exploring a pretty common mystery on netbsd
>> machines- where is my memory?
>
> I'm not sure this answers your questions, but the dmesg of a system
> here (also with 2GB RAM) has:
>
> total memory = 2047 MB
> avail memory = 1999 MB
>
> I assume some pages are reserved and/or used for PMMU tables, etc...
> --
> Matt
>

total memory = 256 MB
avail memory = 239 MB

So that works well with the vmstat -s numbers.  However, that still
doesn't really explain where that memory is.

I guess top should be patched or something to reflect the vmstat -s
numbers instead of whatever it's currently using.

Would you mind looking at vmstat -s and see if you're missing 48MB?

vmstat -s|awk '{ print $1*4096, $0 }'  is handy.  (assuming your first
row looks like this      4096 bytes per page)


Home | Main Index | Thread Index | Old Index