On Wed, 20 Jan 2010 20:52:09 +0700
"Ilya A. Kovalenko" <[email protected]> wrote:
> Good time of day,
>
> pfctl -vvsq shows counter, named "suspends", what specific events
> it counts ?
>
> I just tryin' to understand what it means:
>
> queue root_pcn1 bandwidth 50Mb priority 0 cbq( wrr root ) {stub}
> [ pkts: 668486 bytes: 115633409 dropped pkts: 0
> bytes: 0 ] [ qlength: 0/ 50 borrows: 0 suspends:
> 0 ] [ measured: 703.2 packets/s, 1.03Mb/s ]
> queue stub bandwidth 30Mb qlimit 5000 cbq( borrow default )
> [ pkts: 668486 bytes: 115633409 dropped pkts: 0
> bytes: 0 ] [ qlength: 0/5000 borrows: 0 suspends:
> 65311 ] [ measured: 703.2 packets/s, 1.03Mb/s ]
> queue root_pcn0 bandwidth 100Mb priority 0 cbq( wrr root ) {stub}
> [ pkts: 773002 bytes: 654654161 dropped pkts: 0
> bytes: 0 ] [ qlength: 0/ 50 borrows: 0 suspends:
> 0 ] [ measured: 785.9 packets/s, 5.35Mb/s ]
> queue stub bandwidth 30Mb qlimit 5000 cbq( borrow default )
> [ pkts: 773002 bytes: 654654161 dropped pkts: 0
> bytes: 0 ] [ qlength: 0/5000 borrows: 2607 suspends:
> 56563 ] [ measured: 785.9 packets/s, 5.35Mb/s ]
>
> i.e. speed rates is good, but suspends (dequeuing stalls ?) with
> empty queues looks strange for me.
>
> I can guess, possible _cause_ of such behavior - host is runninig on
> virtual hardware under VMWare Hypervisor, but can't understand the
> _process_ itself.
>
> Kind regards,
>
> Ilya A. Kovalenko
Yes, that counter shows the number of packets for that queue that got
delayed, not dequeued/sent "immidiately".
pf.conf(5)
QUEUEING
The scheduler defines the algorithm used to decide which packets
get delayed, dropped, or sent out immediately.
The counter is populated within the function rmc_delay_action
in sys/altq/altq_rmclass.c .
It is refered to everywhere as "delayed" only in the output of pfctl it
is called "suspends", for whatever reason.
- Robert
