Wired memory monitoring

[Julian Elischer]

Julian Elischer wrote:
> Jan Srzednicki wrote:
> 
>> Hello,
>>
>> I am investigating some VM issues on FreeBSD. I have noticed that wired
>> memory grows quite rapidly on forking lots of processes. After those
>> processes exit, it drops a bit, but still can use about 100MB after
>> launching 3000 processes. I think it's not a leak, as subsequent forks
>> don't cause it to grow noticeably.
>>
>> I'm rather curious what eats all that memory. sysctl vm.zone shows some
>> high values, but they're are not high in memory usage terms, even
>> considering 50% (or so) efficiency of the slab allocator.
>>
>> The question is, are there any other memory inspecting tools that would
>> allow me to see where is all that wired memory? And, are there any ways
>> to control it's behaviour (eg. to free unused per-process structures and
>> data)?
>>
>> greetings,

> 
> Every thread allocated only shows the thread structure in the zone stats
> but there is a 3 page stack allocated with it too which doesn't show up 
> there.

this is in 5.x & 6.x.. you don't say what version you are looking at.

> 
> 
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