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Message-Id: <1152916456.3119.92.camel@mindpipe> Date: Fri, 14 Jul 2006 18:34:15 -0400 From: Lee Revell <rlrevell@...-job.com> To: markh@...pro.net Cc: linux-kerneL@...r.kernel.org, Ingo Molnar <mingo@...e.hu>, Steven Rostedt <rostedt@...dmis.org>, Thomas Gleixner <tglx@...utronix.de> Subject: Re: RT exec for exercising RT kernel capabilities On Thu, 2006-06-08 at 15:12 -0400, Mark Hounschell wrote: > ftp://ftp.compro.net/public/rt-exec/ The high res timers do not seem to be working. Using 2.6.17-rt3 and glibc 2.3.6, I get the exact same (bad) results whether CONFIG_HIGH_RES_TIMERS is enabled or not. CONFIG_HIGH_RES_TIMERS=y, CONFIG_HIGH_RES_RESOLUTION=1000: # Run 00:40:12:784 Posix-hrt 14:27:38 Work:200 CPU:14 Avg:14 Max:23 Pg:0 # DataPool:SHM Exec Heart Beat Rate:1000Hz Exec Revision:1.0.3-1 ############################################################################### # Task Sched Cpu Intr Late -Interrupt Latencies (usec)- # Taskname Type Pr P Mask Cnt Cnt Spare Current Best Worst Determ # exec hrt 5 F 2 2412784 0 871 2 1 18 17 # task1 dth 29 F 2 603196 0 3993 19 17 70 53 # task2 dth 28 F 2 603196 1 3993 19 17 128 111 # task3 sth 25 F 2 1206392 0 1993 18 14 40 26 # task4 sth 24 F 2 1206392 0 1993 18 13 37 24 # task5 sem 23 F 2 2412784 0 993 4 3 28 25 # task6 sem 22 F 2 1206392 0 1993 4 3 10 7 # task7 sig 19 F 2 1206392 0 1993 7 7 17 10 # task8 sig 18 F 2 1206392 0 1993 8 6 18 12 # task9 hrt 17 R 2 1017659 0 1993 763 712 2185 1473 # task10 hrt 17 R 2 1017798 0 1993 771 717 13879 13162 # task11 hrn 14 R 2 1586789 0 993 1060 690 15817 15127 # task12 hrn 14 R 2 1586620 0 993 1024 689 15743 15054 # task13 hru 11 R 2 1557359 0 993 1053 689 2972 2283 # task14 hru 11 R 2 1561189 0 993 1018 690 3010 2320 # task15 bth 7 R 2 2412784 0 994 29 13 55 42 # task16 bth 7 R 2 2412784 0 993 14 13 56 43 CONFIG_HIGH_RES_TIMERS=n: # Run 00:03:59:384 Posix-hrt 18:24:45 Work:200 CPU:14 Avg:14 Max:19 Pg:0 # DataPool:SHM Exec Heart Beat Rate:1000Hz Exec Revision:1.0.3-1 ############################################################################### # Task Sched Cpu Intr Late -Interrupt Latencies (usec)- # Taskname Type Pr P Mask Cnt Cnt Spare Current Best Worst Determ # exec hrt 5 F 2 239384 0 870 1 1 13 12 # task1 dth 29 F 2 59847 0 3993 19 17 39 22 # task2 dth 28 F 2 59846 0 3993 19 17 39 22 # task3 sth 25 F 2 119693 0 1993 18 17 37 20 # task4 sth 24 F 2 119692 0 1993 19 14 41 27 # task5 sem 23 F 2 239385 0 993 5 4 26 22 # task6 sem 22 F 2 119693 0 1993 5 4 9 5 # task7 sig 19 F 2 119693 0 1993 8 7 15 8 # task8 sig 18 F 2 119692 0 1993 8 6 15 9 # task9 hrt 17 R 2 104060 0 1992 1108 724 11439 10715 # task10 hrt 17 R 2 104057 0 1993 1102 726 12923 12197 # task11 hrn 14 R 2 161028 0 994 1056 705 13001 12296 # task12 hrn 14 R 2 160951 0 993 1019 704 12456 11752 # task13 hru 11 R 2 158334 0 993 1054 744 3109 2365 # task14 hru 11 R 2 158729 0 993 1020 709 3066 2357 # task15 bth 7 R 2 239385 0 993 29 13 54 41 # task16 bth 7 R 2 239385 0 993 15 13 55 42 Any idea what could be wrong? Lee - 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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