Messages in this thread | | | Subject | Re: 2.6.14-rt1 | From | Fernando Lopez-Lezcano <> | Date | Mon, 31 Oct 2005 10:13:16 -0800 |
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On Sun, 2005-10-30 at 14:33 +0100, Ingo Molnar wrote: > i have released the 2.6.14-rt1 tree, which can be downloaded from the > usual place: > > http://redhat.com/~mingo/realtime-preempt/ > > this release is mainly about ktimer fixes: it updates to the latest > ktimer tree from Thomas Gleixner (which includes John Stultz's latest > GTOD tree), it fixes TSC synchronization problems on HT systems, and > updates the ktimers debugging code. > > These together could fix most of the timer warnings and annoyances > reported for 2.6.14-rc5-rt kernels. In particular the new > TSC-synchronization code could fix SMP systems: the upstream TSC > synchronization method is fine for 1 usec resolution, but it was not > good enough for 1 nsec resolution and likely caused the SMP bugs > reported by Fernando Lopez-Lezcano and Rui Nuno Capela.
I just booted into 2.6.14-rt1 (SMP, no HIGH_REG_TIMERS) and got these:
... ITSC warped from 000000622fc9fbbf [0] to 000000622fc87638 [1]. softirq-timer/1/13[CPU#1]: BUG in __get_nsec_offset at kernel/time/timeofday.c:181 [<c0128167>] __WARN_ON+0x67/0x90 (8) [<c0143d16>] get_realtime_clock+0x266/0x2d0 (48) [<c014104f>] ktimer_run_queues+0x2f/0x130 (96) [<c01317ee>] run_timer_softirq+0xde/0x380 (48) [<c03750b5>] schedule+0x85/0x100 (24) [<c012d588>] ksoftirqd+0x118/0x1e0 (28) [<c012d470>] ksoftirqd+0x0/0x1e0 (44) [<c013d31c>] kthread+0xac/0xb0 (4) [<c013d270>] kthread+0x0/0xb0 (12) [<c0101545>] kernel_thread_helper+0x5/0x10 (16) ... ITSC warped from 00000064bbf83c4f [0] to 00000064bbf216ec [1]. softirq-timer/1/13[CPU#1]: BUG in __get_nsec_offset at kernel/time/timeofday.c:181 [<c0128167>] __WARN_ON+0x67/0x90 (8) [<c0143d16>] get_realtime_clock+0x266/0x2d0 (48) [<c014104f>] ktimer_run_queues+0x2f/0x130 (96) [<c01317ee>] run_timer_softirq+0xde/0x380 (48) [<c03750b5>] schedule+0x85/0x100 (24) [<c012d588>] ksoftirqd+0x118/0x1e0 (28) [<c012d470>] ksoftirqd+0x0/0x1e0 (44) [<c013d31c>] kthread+0xac/0xb0 (4) [<c013d270>] kthread+0x0/0xb0 (12) [<c0101545>] kernel_thread_helper+0x5/0x10 (16) ... ITSC warped from 0000006748267cdf [0] to 00000067481d6636 [1]. softirq-timer/1/13[CPU#1]: BUG in __get_nsec_offset at kernel/time/timeofday.c:181 [<c0128167>] __WARN_ON+0x67/0x90 (8) [<c0143d16>] get_realtime_clock+0x266/0x2d0 (48) [<c014104f>] ktimer_run_queues+0x2f/0x130 (96) [<c01317ee>] run_timer_softirq+0xde/0x380 (48) [<c03750b5>] schedule+0x85/0x100 (24) [<c012d588>] ksoftirqd+0x118/0x1e0 (28) [<c012d470>] ksoftirqd+0x0/0x1e0 (44) [<c013d31c>] kthread+0xac/0xb0 (4) [<c013d270>] kthread+0x0/0xb0 (12) [<c0101545>] kernel_thread_helper+0x5/0x10 (16) ... ITSC warped from 00000069d454bd6f [0] to 00000069d44857fc [1]. softirq-timer/1/13[CPU#1]: BUG in __get_nsec_offset at kernel/time/timeofday.c:181 [<c0128167>] __WARN_ON+0x67/0x90 (8) [<c0143d16>] get_realtime_clock+0x266/0x2d0 (48) [<c014104f>] ktimer_run_queues+0x2f/0x130 (96) [<c01317ee>] run_timer_softirq+0xde/0x380 (48) [<c03750b5>] schedule+0x85/0x100 (24) [<c012d588>] ksoftirqd+0x118/0x1e0 (28) [<c012d470>] ksoftirqd+0x0/0x1e0 (44) [<c013d31c>] kthread+0xac/0xb0 (4) [<c013d270>] kthread+0x0/0xb0 (12) [<c0101545>] kernel_thread_helper+0x5/0x10 (16) ... ITSC warped from 00000069d454bd6f [1] to 00000069d4515d11 [1]. softirq-timer/1/13[CPU#1]: BUG in __get_nsec_offset at kernel/time/timeofday.c:181 [<c0128167>] __WARN_ON+0x67/0x90 (8) [<c01436e6>] get_monotonic_clock+0x246/0x2b0 (48) [<c014104f>] ktimer_run_queues+0x2f/0x130 (96) [<c01317ee>] run_timer_softirq+0xde/0x380 (48) [<c03750b5>] schedule+0x85/0x100 (24) [<c012d588>] ksoftirqd+0x118/0x1e0 (28) [<c012d470>] ksoftirqd+0x0/0x1e0 (44) [<c013d31c>] kthread+0xac/0xb0 (4) [<c013d270>] kthread+0x0/0xb0 (12) [<c0101545>] kernel_thread_helper+0x5/0x10 (16)
-- Fernando
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