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2026-05-10 - 23:48
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackbslot7.osadl.org (updated Sun May 10, 2026 12:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2316421290,2sleep1291rcuc/111:05:521
6112991135,32cyclictest6118-21latency_hist07:01:310
6112991135,32cyclictest6118-21latency_hist07:01:310
6112991083,33cyclictest32287-21/usr/sbin/munin10:26:540
6112991083,29cyclictest352-21runrttasks11:01:370
61129910655,45cyclictest27291-21ntp_offset11:11:540
6112991065,25cyclictest21643-21kernelversion11:56:510
61129910651,49cyclictest20274-21timerandwakeup09:12:040
61129910651,49cyclictest20274-21timerandwakeup09:12:040
61129910633,8cyclictest0-21swapper/009:01:470
6112991063,33cyclictest11417-21cron08:56:270
61129910632,7cyclictest0-21swapper/010:42:120
6121991057,76cyclictest25800-21sh09:22:061
61219910510,79cyclictest14242-21apt-get09:56:471
6112991052,29cyclictest6684-21latency_hist12:26:310
6126991044,48cyclictest29347-21ssh10:21:402
6112991043,45cyclictest12062-21fschecks_count10:46:510
6112991033,31cyclictest2820-21/usr/sbin/munin10:31:530
6112991033,31cyclictest2820-21/usr/sbin/munin10:31:530
6112991032,29cyclictest1980-21latency_hist09:36:310
6112991025,25cyclictest7340-21fschecks_time12:27:270
6112991023,41cyclictest3555-21kernelversion11:26:530
6112991023,41cyclictest3555-21kernelversion11:26:530
6112991023,34cyclictest20140-21/usr/sbin/munin10:06:540
6112991023,27cyclictest17007-21runrttasks10:01:300
6018210216,60sleep26035-21systemd-run07:01:292
6018210216,60sleep26035-21systemd-run07:01:292
6126991015,52cyclictest352-21runrttasks10:41:402
6112991013,37cyclictest4228-21sendmail_mailqu08:32:000
6112991013,35cyclictest14518-21kworker/u17:0+rpciod11:46:370
6112991013,27cyclictest8893-21cat09:47:040
6112991012,34cyclictest11318-21fschecks_time09:51:500
61129910034,8cyclictest0-21swapper/008:11:580
6112991003,35cyclictest32752-21latency_hist08:21:310
6112991003,34cyclictest23823-21cstates11:06:440
6112991003,26cyclictest32624-21sort11:21:380
6112991003,25cyclictest8407-21cpuspeed07:06:460
61129910031,8cyclictest0-21swapper/012:02:000
61129910031,11cyclictest0-21swapper/009:21:310
61129910026,11cyclictest0-21swapper/010:06:270
61129910026,11cyclictest0-21swapper/010:06:270
6112991002,27cyclictest29322-21mailstats09:27:030
6126999951,41cyclictest1-21systemd10:32:132
6126999951,41cyclictest1-21systemd10:32:132
6126999950,43cyclictest2507-21/usr/sbin/munin10:31:292
611299993,42cyclictest13668-21fschecks_time07:21:490
611299993,35cyclictest20590-21latency_hist11:01:300
611299993,35cyclictest20590-21latency_hist11:01:300
611299993,30cyclictest9307-21/usr/sbin/munin11:36:510
611299993,30cyclictest7076-21ls07:02:020
611299993,30cyclictest7076-21ls07:02:020
6112999931,14cyclictest25599-21sh09:21:370
611299992,39cyclictest19899-21apt-get07:41:420
611299992,36cyclictest17077-21sendmail_mailqu09:07:000
611299992,32cyclictest18209-21/usr/sbin/munin11:51:520
611299992,32cyclictest18209-21/usr/sbin/munin11:51:520
611299985,27cyclictest31698-21taskset12:13:240
611299985,27cyclictest31698-21taskset12:13:240
6112999834,8cyclictest0-21swapper/009:46:300
611299983,38cyclictest352-21runrttasks11:36:030
611299983,38cyclictest352-21runrttasks11:36:030
611299983,38cyclictest21479-21/usr/sbin/munin07:46:500
611299983,38cyclictest21479-21/usr/sbin/munin07:46:500
611299983,32cyclictest9962-21/usr/sbin/munin07:11:480
611299983,32cyclictest9962-21/usr/sbin/munin07:11:480
611299983,28cyclictest13033-21diskmemload10:51:480
520029813,59sleep15206-21open_files06:57:081
520029813,59sleep15206-21open_files06:57:081
611299974,33cyclictest8679-21fschecks_time08:46:510
611299973,36cyclictest6618-21cat10:37:010
611299973,34cyclictest19784-21latency_hist07:41:300
611299973,32cyclictest27540-21/usr/sbin/munin12:06:520
611299973,30cyclictest2929-21grep08:27:050
611299973,30cyclictest2929-21grep08:27:050
6112999731,60cyclictest0-21swapper/007:17:110
612699966,54cyclictest0-21swapper/211:06:382
6121999670,17cyclictest13664-21sh09:01:491
611299964,24cyclictest603-21/usr/sbin/munin12:16:550
611299963,35cyclictest23280-21awk10:11:430
611299963,35cyclictest23280-21awk10:11:430
611299963,34cyclictest29025-21apt10:21:270
611299963,32cyclictest25368-21find07:56:590
611299963,32cyclictest15565-21ntp_kernel_pll_07:26:570
611299963,31cyclictest16692-21cpu07:31:430
611299954,34cyclictest6812-21sort08:41:360
611299953,30cyclictest11951-21fschecks_time08:56:500
6112999531,8cyclictest0-21swapper/010:21:440
611299952,24cyclictest1032-21mailstats08:22:000
6126999445,39cyclictest6793-21apt-get12:27:162
611299944,34cyclictest23112-21/usr/sbin/munin07:52:040
611299944,32cyclictest12972-21processes11:42:000
611299943,34cyclictest29795-21cstates11:16:450
611299943,34cyclictest29795-21cstates11:16:450
611299943,32cyclictest5632-21wc08:36:530
611299943,27cyclictest28237-21fschecks_time08:06:510
611299942,32cyclictest26634-21fschecks_time08:01:500
6126999342,45cyclictest2374-21systemd-journal09:15:362
6126999342,45cyclictest2374-21systemd-journal09:15:362
611299932,10cyclictest3146-21grep09:37:040
612699923,38cyclictest3273-21cron12:21:262
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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