netdev.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
* Softirqs without captured packets
@ 2013-02-08 19:41 Javier Domingo
  2013-02-08 19:54 ` Javier Domingo
  0 siblings, 1 reply; 14+ messages in thread
From: Javier Domingo @ 2013-02-08 19:41 UTC (permalink / raw)
  To: netdev

Hi all,

I have created a tracer module that makes a measure of time at the
start and at the end of a softirq, and also the captured packets in
it.

I have made the measurements using sched_clock() for the time and
summing up the work variable after each poll (in the net_rx_action
polling loop).

I have noticed quite strange results. There are many softirqs that end
up with 0 captured packets.

This is the trace I created and has the following format <start time>
- <end time> : <captured packets>.

As you will notice, thought many of them have some packet captured,
there are many others that don't.

Any help/explanation is welcome!,

Javier Domingo

^ permalink raw reply	[flat|nested] 14+ messages in thread

end of thread, other threads:[~2013-03-06 19:40 UTC | newest]

Thread overview: 14+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2013-02-08 19:41 Softirqs without captured packets Javier Domingo
2013-02-08 19:54 ` Javier Domingo
2013-02-08 19:57   ` David Miller
2013-02-08 20:02     ` Javier Domingo
2013-02-08 20:15       ` David Miller
2013-02-08 21:22         ` Javier Domingo
2013-02-09 20:27           ` Javier Domingo
2013-02-10  1:16             ` Eric Dumazet
2013-02-10  3:02               ` Javier Domingo
2013-02-10  8:16                 ` Eric Dumazet
     [not found]                   ` <CALZVapm1evE6rOgNkJapu9VboA6OojKGJ-UhRhZ26J0A+k4nmw@mail.gmail.com>
2013-02-22  9:32                     ` Javier Domingo
2013-02-22 14:11                       ` Eric Dumazet
2013-03-06 17:20                         ` Javier Domingo
2013-03-06 19:40                           ` David Miller

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).