Date: Tue, 12 Nov 2013 14:51:52 +0400 From: Pavel Timofeev <timp87@gmail.com> To: Pavel Timofeev <timp87@gmail.com> Cc: "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org> Subject: Re: Hyper-V Message-ID: <CAAoTqfsQA9mqaV%2BOCOkcXhubSsztig1%2BOt8oQLURhC=mz7Zwaw@mail.gmail.com> In-Reply-To: <CAAoTqfvwZuEkLSJzWXsqhszoZqoizchfrjXG2qmw_WsZVV9tgQ@mail.gmail.com> References: <CAAoTqfvRtR7MYL=wTeHdZ6%2BToveP=4BfhLmEpFyvuA7HX79qpQ@mail.gmail.com> <52794AB7.80600@freebsd.org> <CAAoTqfsJMo2yMk_R7ABHeeJeYh12BUqS_%2BPkM50DbC=tYe9dgA@mail.gmail.com> <CAAoTqfsJU6tMB4Z96QEOA_57DfDkzDxBztF1uZ%2BpMOd3WjGC2Q@mail.gmail.com> <CAAoTqfun%2BhHUWWnLZ0rB%2Bt4rf=DDprB__=NyW5tp=bNWLhK4qg@mail.gmail.com> <CAAoTqfvwZuEkLSJzWXsqhszoZqoizchfrjXG2qmw_WsZVV9tgQ@mail.gmail.com>
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So, we catched the bug that caused crash. Thanks to all. Cool! As regards the messages about "calcru": I tried to install CentOS 6.4 on new virt machine on same host system. Linux doesn't have any strange messages about time. I tried to migrate FreeBSD and CentOS virt machines to another host which has another hardware. Same story. For example, try to boot beta-3 in LIVE CD mode. You won't see calcru messages. But if you try to run 'dclient hn0' you'll see calcru message storm for some time. On already installed system I can cause messages by doing service zabbix_server start (even if it's not allowed in rc.conf (!)) But I can start mysql-server, zabbix_agentd, apache22 and it doesn't cause appearance of calcru messages. Any ideas? How and where can I dig? 2013/11/6 Pavel Timofeev <timp87@gmail.com>: > Small fix: > kern.timecounter.hardware=TSC covered messages, but now it looks stange > % time sleep 30 > 20.24 real 0.00 user 0.00 sys > > 2013/11/6 Pavel Timofeev <timp87@gmail.com>: >> I already tried disabling Hyper-v time syncing, setting >> kern.timecounter.hardware to different type from >> kern.timecounter.choice, setting kern.hz to different values. But >> nothing helped. >> I'll try to install CentOS 6.4 on this machine and see what happens. >> >> 2013/11/6 Pavel Timofeev <timp87@gmail.com>: >>> Does anybody know how to disable Hyper-v time syncing it guest FreeBSD >>> OS? I'd like to try this one. >>> >>> 2013/11/6 Pavel Timofeev <timp87@gmail.com>: >>>> 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 <julian@freebsd.org>: >>>>> 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" >>>>>> >>>>>> >>>>>
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