Add socket related statistics to netstat(1)?

[Igor Sysoev]

On Wed, Aug 29, 2007 at 02:39:57PM +0100, Robert Watson wrote:

> 
> 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...

I agree - it's much better, however, someone may argue that it
will break statistic scripts.
May we should use anthor switch.

> >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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-- 
Igor Sysoev
http://sysoev.ru/en/