Re: Memory debugging question...

[patrick%klos.com@localhost]

>On Mon, Jan 07, 2008 at 05:12:44AM -0800, patrick%klos.com@localhost wrote:
>> Hello,
>> 
>> I'm working on a NIC driver for a 10 Gbps NIC and I have the basics worki=
>ng,
>> but I clearly have a memory leak.  The thing is, I don't see the leak whe=
>n I
>> look at the output of 'vmstat -m'.  I see the memory climb in the output =
>of
>> 'top' - it indicates that the "File" memory usage is continually climbing
>> when I have transfers happening.
>
>Are these transfers coming from or going to a file system?

Neither.  They're simple UDP sends and receives, or they're 8900 byte ICMP
pings (in jumbo packets).

>> So the basic question is "what memory usage would be considered 'File' me=
>mory
>> by 'top' but wouldn't show up in 'vmstat -m'?".  Of course, it's possible=
> I'm
>> just not seeing it in the 'vmstat -m' output, but I've looked pretty hard=
>!  :o)
>
>I'm pretty sure "File" is cached file system/block device backing.

I was surprised to see the "File" memory being used up during my network
I/O tests, but I'm still somewhat new to NetBSD kernel development.  I
figured someone would know what's going on or at least be able to point
me in the right direction?

Thanks Jonathan.

Patrick
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    Patrick Klos                           Email: patrick%klos.com@localhost
    Network/Embedded Software Engineer     Web:   http://www.klos.com/
    Klos Technologies, Inc.                Phone: 603-714-0195
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