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Message-Id: <200709161502.30533.elendil@planet.nl> Date: Sun, 16 Sep 2007 15:02:30 +0200 From: Frans Pop <elendil@...net.nl> To: linux-kernel@...r.kernel.org Subject: TSC && HPET calibration I'm seeing the same error as reported by Sami Farin earlier today [1], but from my logs I can see that the issue is intermittent (2/3 failures). The logs indicate that the issue was introduced with 2.6.22 as TSC sync was correct for all boots with 2.6.21-6. My system is also Pentium D: Intel(R) Pentium(R) D CPU 3.20GHz Cheers, Frans Pop [1] http://lkml.org/lkml/2007/9/16/34 Jul 12 10:54:37 faramir kernel: Linux version 2.6.21-2-amd64 (Debian 2.6.21-6) (waldi@...ian.org) (gcc version 4.1.3 20070629 (prerelease) (Debian 4.1.2-13)) #1 SMP Tue Jul 10 21:39:38 UTC 2007 Jul 12 10:54:37 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: passed. Jul 13 15:24:10 faramir kernel: Linux version 2.6.21-2-amd64 (Debian 2.6.21-6) (waldi@...ian.org) (gcc version 4.1.3 20070629 (prerelease) (Debian 4.1.2-13)) #1 SMP Tue Jul 10 21:39:38 UTC 2007 Jul 13 15:24:10 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: passed. Jul 14 14:22:11 faramir kernel: Linux version 2.6.21-2-amd64 (Debian 2.6.21-6) (waldi@...ian.org) (gcc version 4.1.3 20070629 (prerelease) (Debian 4.1.2-13)) #1 SMP Tue Jul 10 21:39:38 UTC 2007 Jul 14 14:22:11 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: passed. Jul 14 16:42:12 faramir kernel: Linux version 2.6.21-2-amd64 (Debian 2.6.21-6) (waldi@...ian.org) (gcc version 4.1.3 20070629 (prerelease) (Debian 4.1.2-13)) #1 SMP Tue Jul 10 21:39:38 UTC 2007 Jul 14 16:42:12 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: passed. Jul 14 19:32:17 faramir kernel: Linux version 2.6.21-2-amd64 (Debian 2.6.21-6) (waldi@...ian.org) (gcc version 4.1.3 20070629 (prerelease) (Debian 4.1.2-13)) #1 SMP Tue Jul 10 21:39:38 UTC 2007 Jul 14 19:32:17 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: passed. Jul 15 13:44:51 faramir kernel: Linux version 2.6.21-2-amd64 (Debian 2.6.21-6) (waldi@...ian.org) (gcc version 4.1.3 20070629 (prerelease) (Debian 4.1.2-13)) #1 SMP Tue Jul 10 21:39:38 UTC 2007 Jul 15 13:44:51 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: passed. Jul 16 18:16:52 faramir kernel: Linux version 2.6.21-2-amd64 (Debian 2.6.21-6) (waldi@...ian.org) (gcc version 4.1.3 20070629 (prerelease) (Debian 4.1.2-13)) #1 SMP Tue Jul 10 21:39:38 UTC 2007 Jul 16 18:16:52 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: passed. Jul 16 18:53:26 faramir kernel: Linux version 2.6.21-2-amd64 (Debian 2.6.21-6) (waldi@...ian.org) (gcc version 4.1.3 20070629 (prerelease) (Debian 4.1.2-13)) #1 SMP Tue Jul 10 21:39:38 UTC 2007 Jul 16 18:53:26 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: passed. Jul 17 21:05:13 faramir kernel: Linux version 2.6.22-1-amd64 (Debian 2.6.22-1) (waldi@...ian.org) (gcc version 4.1.3 20070629 (prerelease) (Debian 4.1.2-13)) #1 SMP Mon Jul 16 00:30:42 UTC 2007 Jul 17 21:05:13 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: Jul 17 21:05:13 faramir kernel: Measured 40 cycles TSC warp between CPUs, turning off TSC clock. Jul 17 21:05:13 faramir kernel: Marking TSC unstable due to check_tsc_sync_source failed Aug 18 07:30:55 faramir kernel: Linux version 2.6.23-rc3 (root@...amir) (gcc version 4.1.3 20070718 (prerelease) (Debian 4.1.2-14)) #1 SMP Mon Aug 13 17:24:51 CEST 2007 Aug 18 07:30:55 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: Aug 18 07:30:55 faramir kernel: Measured 24 cycles TSC warp between CPUs, turning off TSC clock. Aug 18 07:30:55 faramir kernel: Marking TSC unstable due to check_tsc_sync_source failed Aug 19 06:59:50 faramir kernel: Linux version 2.6.23-rc3 (root@...amir) (gcc version 4.1.3 20070718 (prerelease) (Debian 4.1.2-14)) #1 SMP Mon Aug 13 17:24:51 CEST 2007 Aug 19 06:59:50 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: Aug 19 06:59:50 faramir kernel: Measured 48 cycles TSC warp between CPUs, turning off TSC clock. Aug 19 06:59:50 faramir kernel: Marking TSC unstable due to check_tsc_sync_source failed Aug 20 07:47:51 faramir kernel: Linux version 2.6.23-rc3 (root@...amir) (gcc version 4.1.3 20070718 (prerelease) (Debian 4.1.2-14)) #1 SMP Mon Aug 13 17:24:51 CEST 2007 Aug 20 07:47:51 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: passed. Aug 21 09:16:46 faramir kernel: Linux version 2.6.23-rc3 (root@...amir) (gcc version 4.1.3 20070718 (prerelease) (Debian 4.1.2-14)) #1 SMP Mon Aug 13 17:24:51 CEST 2007 Aug 21 09:16:46 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: passed. Aug 22 10:27:29 faramir kernel: Linux version 2.6.23-rc3 (root@...amir) (gcc version 4.1.3 20070718 (prerelease) (Debian 4.1.2-14)) #1 SMP Mon Aug 13 17:24:51 CEST 2007 Aug 22 10:27:29 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: Aug 22 10:27:29 faramir kernel: Measured 48 cycles TSC warp between CPUs, turning off TSC clock. Aug 22 10:27:29 faramir kernel: Marking TSC unstable due to check_tsc_sync_source failed Aug 23 09:52:29 faramir kernel: Linux version 2.6.23-rc3 (root@...amir) (gcc version 4.1.3 20070718 (prerelease) (Debian 4.1.2-14)) #1 SMP Mon Aug 13 17:24:51 CEST 2007 Aug 23 09:52:30 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: Aug 23 09:52:30 faramir kernel: Measured 40 cycles TSC warp between CPUs, turning off TSC clock. Aug 23 09:52:30 faramir kernel: Marking TSC unstable due to check_tsc_sync_source failed Aug 28 18:49:04 faramir kernel: Linux version 2.6.23-rc3 (root@...amir) (gcc version 4.1.3 20070718 (prerelease) (Debian 4.1.2-14)) #1 SMP Mon Aug 13 17:24:51 CEST 2007 Aug 28 18:49:04 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: Aug 28 18:49:04 faramir kernel: Measured 40 cycles TSC warp between CPUs, turning off TSC clock. Aug 28 18:49:04 faramir kernel: Marking TSC unstable due to check_tsc_sync_source failed Aug 29 19:53:26 faramir kernel: Linux version 2.6.23-rc4 (root@...amir) (gcc version 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)) #1 SMP Tue Aug 28 20:42:39 CEST 2007 Aug 29 19:53:26 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: passed. Aug 30 18:04:20 faramir kernel: Linux version 2.6.23-rc4 (root@...amir) (gcc version 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)) #1 SMP Tue Aug 28 20:42:39 CEST 2007 Aug 30 18:04:20 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: Aug 30 18:04:20 faramir kernel: Measured 48 cycles TSC warp between CPUs, turning off TSC clock. Aug 30 18:04:20 faramir kernel: Marking TSC unstable due to check_tsc_sync_source failed Aug 31 17:40:28 faramir kernel: Linux version 2.6.23-rc4 (root@...amir) (gcc version 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)) #1 SMP Tue Aug 28 20:42:39 CEST 2007 Aug 31 17:40:28 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: Aug 31 17:40:28 faramir kernel: Measured 48 cycles TSC warp between CPUs, turning off TSC clock. Aug 31 17:40:28 faramir kernel: Marking TSC unstable due to check_tsc_sync_source failed Sep 1 18:36:51 faramir kernel: Linux version 2.6.23-rc4 (root@...amir) (gcc version 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)) #1 SMP Tue Aug 28 20:42:39 CEST 2007 Sep 1 18:36:51 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: Sep 1 18:36:51 faramir kernel: Measured 40 cycles TSC warp between CPUs, turning off TSC clock. Sep 1 18:36:51 faramir kernel: Marking TSC unstable due to check_tsc_sync_source failed Sep 2 13:29:56 faramir kernel: Linux version 2.6.23-rc5 (root@...amir) (gcc version 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)) #1 SMP Sat Sep 1 20:51:22 CEST 2007 Sep 2 13:29:56 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: Sep 2 13:29:56 faramir kernel: Measured 48 cycles TSC warp between CPUs, turning off TSC clock. Sep 2 13:29:56 faramir kernel: Marking TSC unstable due to check_tsc_sync_source failed Sep 3 11:07:19 faramir kernel: Linux version 2.6.23-rc5 (root@...amir) (gcc version 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)) #1 SMP Sat Sep 1 20:51:22 CEST 2007 Sep 3 11:07:19 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: passed. Sep 4 15:33:24 faramir kernel: Linux version 2.6.23-rc5 (root@...amir) (gcc version 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)) #1 SMP Sat Sep 1 20:51:22 CEST 2007 Sep 4 15:33:24 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: passed. Sep 5 14:24:12 faramir kernel: Linux version 2.6.23-rc5 (root@...amir) (gcc version 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)) #1 SMP Sat Sep 1 20:51:22 CEST 2007 Sep 5 14:24:12 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: Sep 5 14:24:12 faramir kernel: Measured 40 cycles TSC warp between CPUs, turning off TSC clock. Sep 5 14:24:12 faramir kernel: Marking TSC unstable due to check_tsc_sync_source failed Sep 6 07:10:28 faramir kernel: Linux version 2.6.23-rc5 (root@...amir) (gcc version 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)) #1 SMP Sat Sep 1 20:51:22 CEST 2007 Sep 6 07:10:28 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: Sep 6 07:10:28 faramir kernel: Measured 48 cycles TSC warp between CPUs, turning off TSC clock. Sep 6 07:10:28 faramir kernel: Marking TSC unstable due to check_tsc_sync_source failed Sep 7 16:18:01 faramir kernel: Linux version 2.6.23-rc5 (root@...amir) (gcc version 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)) #2 SMP Thu Sep 6 17:00:32 CEST 2007 Sep 7 16:18:01 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: Sep 7 16:18:01 faramir kernel: Measured 248 cycles TSC warp between CPUs, turning off TSC clock. Sep 7 16:18:01 faramir kernel: Marking TSC unstable due to check_tsc_sync_source failed Sep 7 21:09:15 faramir kernel: Linux version 2.6.23-rc5 (root@...amir) (gcc version 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)) #2 SMP Thu Sep 6 17:00:32 CEST 2007 Sep 7 21:09:15 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: Sep 7 21:09:15 faramir kernel: Measured 48 cycles TSC warp between CPUs, turning off TSC clock. Sep 7 21:09:15 faramir kernel: Marking TSC unstable due to check_tsc_sync_source failed Sep 9 12:25:29 faramir kernel: Linux version 2.6.23-rc5 (root@...amir) (gcc version 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)) #2 SMP Thu Sep 6 17:00:32 CEST 2007 Sep 9 12:25:29 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: passed. Sep 11 07:15:52 faramir kernel: Linux version 2.6.23-rc5 (root@...amir) (gcc version 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)) #2 SMP Thu Sep 6 17:00:32 CEST 2007 Sep 11 07:15:52 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: Sep 11 07:15:52 faramir kernel: Measured 40 cycles TSC warp between CPUs, turning off TSC clock. Sep 11 07:15:52 faramir kernel: Marking TSC unstable due to check_tsc_sync_source failed Sep 12 08:57:51 faramir kernel: Linux version 2.6.23-rc6 (root@...amir) (gcc version 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)) #2 SMP Tue Sep 11 15:10:11 CEST 2007 Sep 12 08:57:51 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: Sep 12 08:57:51 faramir kernel: Measured 40 cycles TSC warp between CPUs, turning off TSC clock. Sep 12 08:57:51 faramir kernel: Marking TSC unstable due to check_tsc_sync_source failed Sep 13 01:38:51 faramir kernel: Linux version 2.6.23-rc6 (root@...amir) (gcc version 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)) #2 SMP Tue Sep 11 15:10:11 CEST 2007 Sep 13 01:38:52 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: Sep 13 01:38:52 faramir kernel: Measured 48 cycles TSC warp between CPUs, turning off TSC clock. Sep 13 01:38:52 faramir kernel: Marking TSC unstable due to check_tsc_sync_source failed Sep 14 01:03:48 faramir kernel: Linux version 2.6.23-rc6 (root@...amir) (gcc version 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)) #2 SMP Tue Sep 11 15:10:11 CEST 2007 Sep 14 01:03:48 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: passed. Sep 14 08:52:46 faramir kernel: Linux version 2.6.23-rc6 (root@...amir) (gcc version 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)) #2 SMP Tue Sep 11 15:10:11 CEST 2007 Sep 14 08:52:46 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: Sep 14 08:52:46 faramir kernel: Measured 48 cycles TSC warp between CPUs, turning off TSC clock. Sep 14 08:52:46 faramir kernel: Marking TSC unstable due to check_tsc_sync_source failed Sep 15 09:05:55 faramir kernel: Linux version 2.6.23-rc6 (root@...amir) (gcc version 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)) #2 SMP Tue Sep 11 15:10:11 CEST 2007 Sep 15 09:05:55 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: passed. Sep 16 11:37:36 faramir kernel: Linux version 2.6.23-rc6 (root@...amir) (gcc version 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)) #2 SMP Tue Sep 11 15:10:11 CEST 2007 Sep 16 11:37:36 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: passed. Sep 16 13:57:04 faramir kernel: Linux version 2.6.23-rc6 (root@...amir) (gcc version 4.1.3 20070812 (prerelease) (Debian 4.1.2-15)) #2 SMP Tue Sep 11 15:10:11 CEST 2007 Sep 16 13:57:04 faramir kernel: checking TSC synchronization [CPU#0 -> CPU#1]: Sep 16 13:57:04 faramir kernel: Measured 56 cycles TSC warp between CPUs, turning off TSC clock. Sep 16 13:57:04 faramir kernel: Marking TSC unstable due to check_tsc_sync_source failed - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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