From owner-freebsd-stable@FreeBSD.ORG Wed Nov 29 07:10:59 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 8142D16ADEF for ; Wed, 29 Nov 2006 07:10:59 +0000 (UTC) (envelope-from lamont@scriptkiddie.org) Received: from sploit.scriptkiddie.org (sploit.scriptkiddie.org [216.231.47.214]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2212C43C9D for ; Wed, 29 Nov 2006 07:10:57 +0000 (GMT) (envelope-from lamont@scriptkiddie.org) Received: from sploit (sploit [216.231.47.214]) by sploit.scriptkiddie.org (8.12.11/8.12.11) with ESMTP id kAT4hblI006781; Tue, 28 Nov 2006 20:43:38 -0800 (PST) Date: Tue, 28 Nov 2006 20:43:37 -0800 (PST) From: Lamont Granquist To: Sam Leffler In-Reply-To: <455BD2BF.3050802@errno.com> Message-ID: References: <45578B48.1090704@errno.com> <455BD2BF.3050802@errno.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: freebsd-stable@freebsd.org Subject: Re: ath0 issue X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 29 Nov 2006 07:10:59 -0000 On Wed, 15 Nov 2006, Sam Leffler wrote: > Snapshots are rarely useful; try running athstats 1 and correlate what > you see with pauses. Another possible reason for deferred operation is > something else in the system blocking the taskq threads; that's a bit > trickier to diagnose. I threw in some printf()'s in the beginning of ath_start() and ath_tx_proc_q0123() and see this: Nov 28 20:27:41 warez kernel: ath_tx_proc_q0123: 1 Nov 28 20:27:41 warez kernel: ath_start Nov 28 20:27:41 warez kernel: ath_start Nov 28 20:27:41 warez kernel: ath_tx_proc_q0123: 1 Nov 28 20:27:41 warez kernel: ath_start Nov 28 20:27:45 warez last message repeated 13 times Nov 28 20:27:45 warez kernel: ath_tx_proc_q0123: 1 Nov 28 20:27:45 warez kernel: ath_start Nov 28 20:27:45 warez kernel: ath_tx_proc_q0123: 1 Nov 28 20:27:45 warez kernel: ath_start Nov 28 20:27:45 warez kernel: ath_start this was during a time where i was pinging across this interface so that every second it should have been transmitting at least one packet. the 4 second stutter there where ath_tx_proc_q0123 wasn't being called correllates with actual stutters in packet transmission. if i understand this, that's the taskq associated with transmission? TASK_INIT(&sc->sc_txtask, 0, ath_tx_proc_q0123, sc);