From owner-freebsd-hackers@FreeBSD.ORG Sat Jun 7 16:55:34 2014 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 22F52C4E for ; Sat, 7 Jun 2014 16:55:34 +0000 (UTC) Received: from mail-vc0-x229.google.com (mail-vc0-x229.google.com [IPv6:2607:f8b0:400c:c03::229]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id D40D62E40 for ; Sat, 7 Jun 2014 16:55:33 +0000 (UTC) Received: by mail-vc0-f169.google.com with SMTP id la4so4672639vcb.28 for ; Sat, 07 Jun 2014 09:55:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=kmOl+qen8jtIxfDEm5b3U+71PMA73W860kSYEZIG2sM=; b=eKniS9tI4XvH07/OTz1OcvRmSS8mDNUh1eDPqhRw8raV578K1/q5ntvjJHSSTrafe7 2wrGR161HDhGNI8rD2lJ0UHmg12n29RTFPWNq2kK9pR3JoZnifbLINZAbe+M/LdItN1S Sc7hHke5iHPYuxq9/ikPF5lhCRqqTZfjlWCcWXIJM1T8o6ItBk+gJ8rU82GqTLpDjfma d7BjC1bvyKj4vxT65OeClfp/FBPamUsK66CTvg/xe1Repp1dsbMRntUbeZcjwn9NkRSz 2eM6QOrUAYlbfnkFpN2azfJXjeTys+u1Dcz56HlgCSPFw4dGpJg9RIHgla/3Roksixfe T8GQ== MIME-Version: 1.0 X-Received: by 10.58.106.104 with SMTP id gt8mr12621132veb.46.1402160132980; Sat, 07 Jun 2014 09:55:32 -0700 (PDT) Sender: adrian.chadd@gmail.com Received: by 10.220.186.193 with HTTP; Sat, 7 Jun 2014 09:55:32 -0700 (PDT) In-Reply-To: <53934250.1090403@gmx.us> References: <538A3432.5010303@gmx.us> <53930E19.8090603@gmx.us> <53931963.4040604@selasky.org> <53932314.6010108@gmx.us> <1402153691.709851721.u6k6kkkk@frv35.fwdcdn.com> <53933110.8060300@gmx.us> <1402157083.156846225.m95e69ke@frv35.fwdcdn.com> <53934250.1090403@gmx.us> Date: Sat, 7 Jun 2014 12:55:32 -0400 X-Google-Sender-Auth: m-mF53CXTgeT0RSLLjO-AtPdo1U Message-ID: Subject: Re: Fwd: Interrupt Overload From: Adrian Chadd To: Dutch Ingraham Content-Type: text/plain; charset=UTF-8 Cc: "freebsd-hackers@freebsd.org" X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 07 Jun 2014 16:55:34 -0000 It sounds much more like some unhandled interrupt status bit/condition somewhere. It's possible that putting things to sleep clears that condition. -a On 7 June 2014 12:48, Dutch Ingraham wrote: > On 06/07/2014 12:04 PM, Vladislav Prodan wrote: >> >> >> >> --- Original message --- >> From: "Dutch Ingraham" >> Date: 7 June 2014, 18:33:12 >> >> >>> >>> Thanks for the response. >>> >>> The output you requested: >>> >>> kern.eventtimer.choice: HPET1 (440) HPET2 (440) HPET3 (440) HPET4 (440) >>> HPET5 (440) HPET6 (440) LAPIC (400) i8254 (100) RTC (0) >>> >>> kern.eventtimer.choice: HPET (did not specify 1, 2, etc.) >>> >>> I also changed the type of timer to LAPIC and rebooted; there was no >>> appreciable change in the interrupt activity. >> >> After reboot what became timer? :) >> >> You can change the timer "on the fly", without rebooting the system. >> >> If LAPIC does not help, then try other timers. >> >> >> -- >> Vladislav V. Prodan >> System & Network Administrator >> support.od.ua >> >> _______________________________________________ >> freebsd-hackers@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-hackers >> To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" >> > > You're right, it is not persistent. I changed to each different event > timer and the only one that made a difference was the i8254; that > dropped the cpu load from 30% to 10-12%. Much better, but still of > course not acceptable for a Core II-Duo running at 3.0GHz. The load > averages shown in do also drop proportionally. Interestingly, > though, shows the same interrupt rate - 325K/sec. > > What do you make of the fact that when I suspend with < > and then wake-up, everything is absolutely normal, regardless of event > timer type? > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org"