[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] #599161: Xen debug patch for the "clock shifts by 50 minutes" bug.
Hi, I just wanted to say I've also been hitting this problem for years on some servers. That was originally under xen 4.0 when I originally installed the machines, but even after update to 4.1.3 and more recently a 3.6.4 dom0 kernel, the problem is still present. More specifically the two hw platforms I'm sure are concerned (hw + cpu info + debug-key 's' info) Sun Fire x2250: cpu family : 6 model : 23 model name : Intel(R) Xeon(R) CPU L5420 @ 2.50GHz stepping : 6 microcode : 0x60b (XEN) TSC has constant rate, deep Cstates possible, so not reliable, warp=3292 (count=1) (XEN) dom1: mode=0,ofs=0x56eb699774,khz=2500128,inc=1,vtsc count: 1168090 kernel, 18678 user Sun Fire x4150: cpu family : 6 model : 23 model name : Intel(R) Xeon(R) CPU E5450 @ 3.00GHz stepping : 10 microcode : 0xa07 (XEN) TSC has constant rate, deep Cstates possible, so not reliable, warp=3789 (count=1) (XEN) dom2: mode=0,ofs=0x3a652aed7d,khz=2992564,inc=1,vtsc count: 4247396065 kernel, 712543 user (XEN) dom3: mode=0,ofs=0x9eb4c44593,khz=2500147,inc=2,vtsc count: 1967559486 kernel, 192516 user When the problem appears, I can also see the "(XEN) Platform timer appears to have unexpectedly wrapped 10 or more times." message. I have now deployed a freshly compiled 4.1.3 with the latest tsc debug patched compiled and loglvl=all option to a test server with the same hw where the problem happenned and I'll report if I see anything. The problem is pretty rare so not sure when it will happen next ... Cheers, Sylvain _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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