Re: /proc/net/tcp not updated fast enough?

[Henrik Christian Grove <grove@fsr.ku.dk>]

Herbert Xu <herbert@gondor.apana.org.au> writes:

> Henrik Christian Grove <grove@fsr.ku.dk> wrote:
>  
> > I have it running on 11[1] machines and since midnight (it's 11:47 here
> > now) I have 2397 succesfull connections, but in 31 cases (that's 1,29%
> > of the connections - and thus not totally ignorable) I had to read
> > through /proc/net/tcp twice to find the uid. Does that sound plausible,
> > or more like I'm doing something wrong?
> 
> /proc/net/tcp in 2.4 is inherently unreliable since it doesn't use
> the seqfile interface.  Your best bet is to use the tcp_diag interface
> instead.  You can either do that by using the ss command from the
> iproute2 suite, or you can query tcp_diag directly from C through
> netlink.

Thank you for the quick reply. Would you (or anyone else reading this)
happen to have any hints on what to do in Perl? (I know I can call ss,
but maybe there's a module with a nice interface?)

.Henrik

-- 
"Det er fundamentalt noget humanistisk vås, at der er noget, 
 der hedder blød matematik."
   --- citat Henrik Jeppesen, dekan for det naturvidenskabelige fakultet