From owner-freebsd-virtualization@FreeBSD.ORG Wed Nov 6 07:23:20 2013 Return-Path: Delivered-To: freebsd-virtualization@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 ESMTP id 05C09AB7; Wed, 6 Nov 2013 07:23:20 +0000 (UTC) (envelope-from timp87@gmail.com) 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)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id A6EAE2785; Wed, 6 Nov 2013 07:23:19 +0000 (UTC) Received: by mail-vc0-f169.google.com with SMTP id hu8so6512999vcb.0 for ; Tue, 05 Nov 2013 23:23:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=cLOrY4GzZcVMxFnbRZcWyErg5+1b5N2VNhuQN6SKEV8=; b=IWb2BVfNjOznNrkXMadljJjjltDyvS/2KHfcvpZvSi2vs+1G6CIQT7kaBpc4O6VyNI ea61VEPp4NecfLXuVotCmQ2JLoG9RJ0IZu5z43IbVYFws2zweyh/t1uV1fzbegblCrbo iNz/20G4My4L+MeS0YRREGuIpnR/1vDJf4A2uMfhajoOe1/JE4CDBx/4Zr/DpXRi7ht+ 8BG8gxXKhXGhi3HYuC/062K9nlacjgNQ4r6zi/P5ozirTXLnohiSGgxy7dWezwNxxslt 3kvDVoXpiBTyz34I6rY8JHPJkIIKJUN7+hlTudzlxCywDCBfsUK4jp2ylR3sdjk6W3+7 YqIg== MIME-Version: 1.0 X-Received: by 10.52.106.201 with SMTP id gw9mr83465vdb.49.1383722598723; Tue, 05 Nov 2013 23:23:18 -0800 (PST) Received: by 10.52.168.106 with HTTP; Tue, 5 Nov 2013 23:23:18 -0800 (PST) In-Reply-To: <52794AB7.80600@freebsd.org> References: <52794AB7.80600@freebsd.org> Date: Wed, 6 Nov 2013 11:23:18 +0400 Message-ID: Subject: Re: Hyper-V From: Pavel Timofeev To: Julian Elischer Content-Type: text/plain; charset=UTF-8 Cc: "freebsd-virtualization@freebsd.org" X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 06 Nov 2013 07:23:20 -0000 Thank you very much! I started to dig, and found that I can reboot my server running under Hyper-V by doing 'sysctl -a'. Can anybody confirm same behavoiur? FreeBSD 10.0-BETA3, Win 2012 Datacenter 2013/11/5 Julian Elischer : > On 11/4/13, 11:13 PM, Pavel Timofeev wrote: >> >> Hi! I upgraded to 10.0-BETA3 but still see messages like >> >> Tue Nov 5 11:09:05 MSK 2013 >> calcru: runtime went backwards from 1728 usec to 889 usec for pid 981 >> (zabbix_server) >> calcru: runtime went backwards from 1229 usec to 703 usec for pid 976 >> (zabbix_server) >> calcru: runtime went backwards from 1019 usec to 595 usec for pid 978 >> (zabbix_server) >> calcru: runtime went backwards from 3041 usec to 1611 usec for pid 969 >> (zabbix_server) >> calcru: runtime went backwards from 1078 usec to 595 usec for pid 975 >> (zabbix_server) >> calcru: runtime went backwards from 1114 usec to 617 usec for pid 980 >> (zabbix_server) >> calcru: runtime went backwards from 1086 usec to 602 usec for pid 977 >> (zabbix_server) >> calcru: runtime went backwards from 1195 usec to 782 usec for pid 970 >> (zabbix_server) >> calcru: runtime went backwards from 3206 usec to 2157 usec for pid 979 >> (zabbix_server) >> calcru: runtime went backwards from 2179 usec to 1542 usec for pid 972 >> (zabbix_server) >> calcru: runtime went backwards from 1833 usec to 927 usec for pid 1026 >> (cron) >> calcru: runtime went backwards from 1091 usec to 551 usec for pid 1022 >> (sendmail) >> calcru: runtime went backwards from 823 usec to 416 usec for pid 1022 >> (sendmail) >> calcru: runtime went backwards from 4691 usec to 2735 usec for pid >> 1011 (sendmail) >> calcru: runtime went backwards from 1162 usec to 587 usec for pid 1011 >> (sendmail) >> calcru: runtime went backwards from 947 usec to 478 usec for pid 1010 >> (httpd) >> calcru: runtime went backwards from 895 usec to 452 usec for pid 1009 >> (httpd) >> calcru: runtime went backwards from 954 usec to 482 usec for pid 1008 >> (httpd) >> calcru: runtime went backwards from 909 usec to 459 usec for pid 1007 >> (httpd) >> calcru: runtime went backwards from 1214 usec to 653 usec for pid 1006 >> (httpd) >> calcru: runtime went backwards from 201793 usec to 102672 usec for pid >> 996 (httpd) >> calcru: runtime went backwards from 1105 usec to 1064 usec for pid 991 >> (sshd) >> calcru: runtime went backwards from 45196 usec to 23221 usec for pid >> 974 (zabbix_server) >> calcru: runtime went backwards from 2192 usec to 1436 usec for pid 973 >> (zabbix_server) >> calcru: runtime went backwards from 605 usec to 306 usec for pid 968 >> (zabbix_server) >> calcru: runtime went backwards from 626 usec to 316 usec for pid 967 >> (zabbix_server) >> calcru: runtime went backwards from 773 usec to 391 usec for pid 966 >> (zabbix_server) >> calcru: runtime went backwards from 663 usec to 335 usec for pid 965 >> (zabbix_server) >> calcru: runtime went backwards from 799 usec to 404 usec for pid 964 >> (zabbix_server) >> calcru: runtime went backwards from 37723 usec to 19422 usec for pid >> 963 (zabbix_server) >> calcru: runtime went backwards from 49425 usec to 26265 usec for pid >> 962 (zabbix_server) >> calcru: runtime went backwards from 38883 usec to 20993 usec for pid >> 961 (zabbix_server) >> calcru: runtime went backwards from 53478 usec to 27411 usec for pid >> 960 (zabbix_server) >> calcru: runtime went backwards from 40845 usec to 21750 usec for pid >> 959 (zabbix_server) >> calcru: runtime went backwards from 47835 usec to 24455 usec for pid >> 958 (zabbix_server) >> calcru: runtime went backwards from 2257 usec to 1612 usec for pid 957 >> (zabbix_server) >> calcru: runtime went backwards from 2361 usec to 1193 usec for pid 932 >> (zabbix_agentd) >> calcru: runtime went backwards from 32053 usec to 16204 usec for pid >> 928 (zabbix_server) >> calcru: runtime went backwards from 32517 usec to 19280 usec for pid 697 >> (sh) >> calcru: runtime went backwards from 1128021 usec to 868022 usec for pid >> 697 (sh) >> calcru: runtime went backwards from 9609 usec to 5601 usec for pid 601 >> (syslogd) >> calcru: runtime went backwards from 688 usec to 348 usec for pid 106 >> (adjkerntz) >> calcru: runtime went backwards from 12 usec to 6 usec for pid 3 >> (sctp_iterator) >> calcru: runtime went backwards from 5467 usec to 2853 usec for pid 2 >> (fdc0) >> calcru: runtime went backwards from 11306 usec to 8408 usec for pid 14 >> (rand_harvestq) >> calcru: runtime went backwards from 136242 usec to 76230 usec for pid 13 >> (geom) >> calcru: runtime went backwards from 156117 usec to 118882 usec for pid 12 >> (intr) >> calcru: runtime went backwards from 7820 usec to 4847 usec for pid 1 >> (init) >> calcru: runtime went backwards from 2340313 usec to 1226503 usec for >> pid 1 (init) >> calcru: runtime went backwards from 4114 usec to 2164 usec for pid 0 >> (kernel) >> >> >> Is it bad? Or I have to ignore them? > > > I'm not talking authoratatively but in some virtualization systems, if the > TSCs on the various processors are not sufficiently synchronized, then when > the hypervisor switches you from one CPU to another, you can get odd > (sometimes negative) time readings which give messages like this.. > >> _______________________________________________ >> freebsd-virtualization@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-virtualization >> To unsubscribe, send any mail to >> "freebsd-virtualization-unsubscribe@freebsd.org" >> >> >