Return-path: Received: from ug-out-1314.google.com ([66.249.92.170]:13543 "EHLO ug-out-1314.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754298AbYIRTAy (ORCPT ); Thu, 18 Sep 2008 15:00:54 -0400 Received: by ug-out-1314.google.com with SMTP id k3so811215ugf.37 for ; Thu, 18 Sep 2008 12:00:52 -0700 (PDT) Message-ID: (sfid-20080918_210100_379578_70EDDA5A) Date: Thu, 18 Sep 2008 12:00:50 -0700 From: "Steven Noonan" To: "Luis R. Rodriguez" Subject: Re: [ath9k-devel] ath9k: massive unexplained latency in 2.6.27 (rc5, rc6, probably others) Cc: LKML , "Ingo Molnar" , linux-wireless , "ath9k-devel@lists.ath9k.org" In-Reply-To: <43e72e890809181142n7738cd99g522e6688e68d11ce@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 References: <43e72e890809181134ybbec8fdxcb2a466aa17fe390@mail.gmail.com> <43e72e890809181142n7738cd99g522e6688e68d11ce@mail.gmail.com> Sender: linux-wireless-owner@vger.kernel.org List-ID: On Thu, Sep 18, 2008 at 11:42 AM, Luis R. Rodriguez wrote: > On Thu, Sep 18, 2008 at 11:34 AM, Luis R. Rodriguez >> irqpoll is a monster of evil and that should make your system crawl to >> its knees. I would advise instead we work with you fixing the the >> missed interrupts issue upon rmmod. > > Also, please provide the output of > > cat /proc/interrupts Note that the problem necessitating use of irqpoll in the first place seems to only happen under certain conditions. I am unsure what these conditions are. Before 'ath9k: connectivity is lost after Group rekeying is done', I had used rmmod/modprobe as my solution to the issue, which triggered the IRQ issue. alcarin steven # cat /proc/interrupts CPU0 CPU1 0x0: 63227 0 IO-APIC-edge hpet 0x8: 1 0 IO-APIC-edge rtc0 0x9: 13080 0 IO-APIC-fasteoi acpi 0xe: 8195 0 IO-APIC-edge ide0 0xf: 0 0 IO-APIC-edge ide1 0x10: 36 0 IO-APIC-fasteoi uhci_hcd:usb5 0x11: 10645 0 IO-APIC-fasteoi ath 0x12: 42 0 IO-APIC-fasteoi uhci_hcd:usb4 0x17: 919 0 IO-APIC-fasteoi ehci_hcd:usb1, uhci_hcd:usb2 0x13: 32885 0 IO-APIC-fasteoi uhci_hcd:usb3, ata_piix, ohci1394 0x200100: 1 0 PCI-MSI-edge eth0 0x16: 223 0 IO-APIC-fasteoi HDA Intel NMI: 0 0 Non-maskable interrupts LOC: 78087 95718 Local timer interrupts RES: 11576 16384 Rescheduling interrupts CAL: 6862 8889 Function call interrupts TLB: 54 41 TLB shootdowns TRM: 0 0 Thermal event interrupts THR: 0 0 Threshold APIC interrupts SPU: 0 0 Spurious interrupts ERR: 0 > > and also please do not cross post to all these lists, just use > linux-wireless or ath9k. > Sorry, but in the past I've posted to linux-wireless, ath9k-devel, and all the maintainers of ath9k and didn't get a single response (except a 'me too' from a fellow ath9k user). I didn't just want to hear crickets this time. - Steven