Add socket related statistics to netstat(1)?

[Robert Watson]

On Wed, 29 Aug 2007, Igor Sysoev wrote:

> On Wed, Aug 29, 2007 at 02:48:57PM +0800, LI Xin wrote:
>
>> Here is a proof-of-concept patch that adds sockets related statistics to 
>> netstat(1)'s -m option, which could make SA's life easier.  Inspired by a 
>> local user's suggestion.
>>
>> Comments?
>
> I think socket info should be groupped together:

The netstat -m output is getting quite cluttered these days, isn't it.  I 
wonder if we should be laying it out a bit more consistently, perhaps 
something like:

 		   current   cache    total    max
mbufs		   2407      1058     3465     -
mbuf clusters      1117      797      1914     98304
mbufs + clusters   1117      90       -        -
4k jumbo clusters  761       417      1178     0
...

It's less compact but possibly quite a bit more readable...

Robert N M Watson
Computer Laboratory
University of Cambridge

>
> 2407/1058/3465 mbufs in use (current/cache/total)
> 1117/797/1914/98304 mbuf clusters in use (current/cache/total/max)
> 1117/90 mbuf+clusters out of packet secondary zone in use (current/cache)
> 761/417/1178/0 4k (page size) jumbo clusters in use (current/cache/total/max)
> 0/0/0/0 9k jumbo clusters in use (current/cache/total/max)
> 0/0/0/0 16k jumbo clusters in use (current/cache/total/max)
> 5879K/3526K/9406K bytes allocated to network (current/cache/total)
> 0/0/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters)
> 0/0/0 requests for jumbo clusters denied (4k/9k/16k)
> 15333/15537/30870/204800 socket UMA in use (current/cache/total/max)
> 5929K bytes allocated to socket
> 0 request for socket UMA denied
> 104/264/6656 sfbufs in use (current/peak/max)
> 0 requests for sfbufs denied
> 0 requests for sfbufs delayed
> 135834 requests for I/O initiated by sendfile
> 0 calls to protocol drain routines
>
> Second, I think socket memory calculation should include
> tcpcb, udpcb, inpcb, unpcb and probably tcptw items.
>
>
> -- 
> Igor Sysoev
> http://sysoev.ru/en/
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