[Iftop-users] Iftop 0.14 on FreeBSD 5.1 using up all the file handles?

[Stuart Whelan - Simulation Hardware LTD]

> Hmm. Which resolver is it using? Does strace show anything 
> useful (try strace -eopen,socket iftop)? Can you use lsof or 
> similar to identify files the process has open?

Hi Chris,

Thanks for the prompt reply. :)

Judging from the make output of the port it is using the forking
resolver:

>>checking how to call gethostbyaddr_r... no idea; dropping back to the
forking resolver

I just tried to build strace onto my system, but it is having problems,
I will get back to you on that one.

lsof provides interesting output:

There are the normal open files, but the interesting lines (current
174... Opps, make that 176 lines of them) are similar to:

iftop   21553 21552 root    6u  KQUEUE 0xc2a08300
count=0, state=0
iftop   21553 21552 root    8u  KQUEUE 0xc2987900
count=0, state=0
iftop   21554 21552 root    8u  KQUEUE 0xc29e9300
count=0, state=0
iftop   21554 21552 root    9u  KQUEUE 0xc2a06400
count=0, state=0
iftop   21553 21552 root   10u  KQUEUE 0xc29ee600
count=0, state=0
iftop   21553 21552 root   11u  KQUEUE 0xc2a11200
count=0, state=0
iftop   21554 21552 root   11u  KQUEUE 0xc2b38400
count=0, state=0
iftop   21553 21552 root   12u  KQUEUE 0xc29a1700
count=0, state=0
iftop   21554 21552 root   12u  KQUEUE 0xc29e9d00
count=0, state=0

I tied disabling name resolving (using -n) to see if that makes a
difference, and it did.

Only 18 open files, and not growing.

Do you still wish to have the strace output? I will attempt to get it
running.

Cheers,
Stuart Whelan
Technical Lead
Simulation Hardware LTD

DDI:      +64  3 3778866
Mobile:   +64 27 2828074


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