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2026-09-16 - 09:45

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, slot #4

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

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 highest latencies:
System rack9slot4s (updated Wed Sep 16, 2026 00:59:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21089912471213,29cyclictest7186-21fschecks_time19:35:151
17482562518,29sleep10-21swapper/119:21:541
12892499468,16sleep00-21swapper/019:20:280
210799244221,16cyclictest7193-21fschecks_time19:35:150
111602790,5sleep111155-21cron00:05:001
149142680,5sleep1211ktimersoftd/119:55:221
66762500,5sleep06678-21latency_hist19:35:000
14602440,5sleep0111rcuc/020:45:260
325642430,32sleep1210899cyclictest22:10:011
210799422,22cyclictest14825-21/usr/sbin/munin22:45:300
210799421,22cyclictest24394-21/usr/sbin/munin21:45:280
210799406,14cyclictest11565-21gdbus00:53:270
2108993917,8cyclictest22-21ksoftirqd/121:07:281
210799389,12cyclictest6734-21grep21:00:180
210799381,7cyclictest12713-21/usr/sbin/munin21:15:210
210799381,21cyclictest15904-21aten_r4power_vo21:25:130
210799381,21cyclictest12145-21runrttasks19:49:100
210799381,16cyclictest31018-21/usr/sbin/munin23:30:180
2108993716,7cyclictest22-21ksoftirqd/120:11:591
210799376,15cyclictest252572chrt20:23:340
210799376,13cyclictest40250irq/92-i91520:40:140
210799371,16cyclictest3648-21/usr/sbin/munin20:50:260
92352361,4sleep09318-21/usr/sbin/munin19:40:210
210899364,15cyclictest26415-21/usr/sbin/munin00:45:331
2108993615,7cyclictest22-21ksoftirqd/120:02:181
2108993614,8cyclictest22-21ksoftirqd/122:40:331
210799362,6cyclictest28223-21/usr/sbin/munin20:30:230
210799362,13cyclictest14616-21/usr/sbin/munin21:20:230
210799361,6cyclictest17159-21tr20:00:280
2107993612,6cyclictest9725-21df00:00:140
210799361,16cyclictest31532-21/usr/sbin/munin22:05:210
156632361,31sleep115725-21df22:50:131
2108993515,7cyclictest22-21ksoftirqd/123:34:361
2108993513,8cyclictest22-21ksoftirqd/100:26:361
210899351,10cyclictest25445-21latency_hist20:25:001
2108993510,8cyclictest2225-21dbus-daemon21:22:211
2108993510,5cyclictest40250irq/92-i91523:05:241
210799356,12cyclictest18611-21taskset00:24:150
2107993511,6cyclictest21885-21ntpdc23:05:240
210799351,15cyclictest23984-21sshd00:36:360
210799351,14cyclictest5515-21taskset22:21:180
210799351,14cyclictest12277-21/usr/sbin/munin22:40:180
210899349,7cyclictest2159-21/usr/sbin/munin22:15:241
210899348,13cyclictest21826-21timerandwakeup00:30:301
210899345,15cyclictest0-21swapper/122:55:221
2108993413,7cyclictest22-21ksoftirqd/120:57:171
2108993410,7cyclictest27563-21cpu20:30:121
210799343,12cyclictest7637-21cut23:55:130
210799342,6cyclictest4990-21hddtemp_smartct20:55:180
210799341,14cyclictest7465-21taskset22:27:020
210799341,13cyclictest2998-21grep22:15:230
210799341,13cyclictest29020-21grep23:25:180
210799341,13cyclictest1585-21taskset22:10:550
92282331,3sleep19233-21irqstats19:40:211
210899338,8cyclictest22-21ksoftirqd/120:35:461
210899331,20cyclictest12681-21df_inode19:50:151
2108993311,8cyclictest2105-21cyclictest23:39:101
2108993311,6cyclictest22-21ksoftirqd/123:00:141
2108993310,8cyclictest22-21ksoftirqd/122:32:581
210799332,14cyclictest22385-21irqstats20:15:190
210799331,7cyclictest9925-21taskset21:09:270
210799331,15cyclictest3954-21taskset19:28:540
210799331,14cyclictest8892-21/usr/sbin/munin22:30:260
210799331,13cyclictest26886-21chrt21:54:470
210799331,13cyclictest16880-21taskset22:52:080
210899329,8cyclictest22-21ksoftirqd/100:52:371
210899329,7cyclictest2225-21dbus-daemon20:42:441
210899328,6cyclictest0-21swapper/121:35:151
2108993210,8cyclictest22-21ksoftirqd/119:27:371
210799322,13cyclictest5200-21chrt23:46:470
210799321,27cyclictest22460-21python21:40:270
210799321,27cyclictest22460-21python21:40:270
210799321,15cyclictest20556-21chrt00:29:580
210799321,14cyclictest11565-21gdbus00:49:100
210799321,13cyclictest28335-21taskset23:23:500
210899319,8cyclictest22-21ksoftirqd/121:55:101
210899319,8cyclictest22-21ksoftirqd/121:17:321
210899319,8cyclictest22-21ksoftirqd/119:48:121
210899318,8cyclictest2225-21dbus-daemon22:10:541
210899318,8cyclictest22-21ksoftirqd/123:40:421
210899318,8cyclictest22-21ksoftirqd/119:31:001
210899316,7cyclictest0-21swapper/100:43:571
210899311,7cyclictest24403-21taskset21:45:281
210799311,13cyclictest18615-21taskset22:55:430
210899308,8cyclictest3286-21runrttasks00:12:371
210899308,8cyclictest22-21ksoftirqd/122:37:591
210899308,8cyclictest22-21ksoftirqd/121:01:401
210899308,8cyclictest22-21ksoftirqd/100:20:041
210899302,9cyclictest30232-21users22:00:321
210899302,8cyclictest27229-21hddtemp_smartct23:20:151
210899302,14cyclictest26162-21irqstats20:25:221
210899301,6cyclictest12178-21open_inodes00:05:241
210899301,15cyclictest6362-21memory23:50:221
2108993010,16cyclictest0-21swapper/100:16:431
2107993020,6cyclictest24576-21aten_r4power_po00:40:120
210799301,6cyclictest1044-21wc23:35:300
283492291,5sleep00-21swapper/021:55:310
270372291,5sleep00-21swapper/020:27:350
210899298,5cyclictest0-21swapper/121:52:331
210899295,5cyclictest0-21swapper/122:27:031
210899293,8cyclictest21914-21perl21:40:161
210899293,8cyclictest21914-21perl21:40:161
210899292,9cyclictest4400-21irqstats23:45:211
210899292,14cyclictest25126-21df_inode23:15:151
210899292,13cyclictest22385-21irqstats20:15:201
210899291,9cyclictest29563-21wc23:25:271
210899291,8cyclictest7630-21wget23:55:121
164542291,5sleep10-21swapper/121:25:231
146352291,5sleep00-21swapper/000:12:080
33342281,5sleep00-21swapper/023:41:550
244242281,5sleep00-21swapper/023:12:260
244242281,5sleep00-21swapper/023:12:260
232592281,4sleep123377-21grep23:10:161
232592281,4sleep123377-21grep23:10:151
210899288,4cyclictest40250irq/92-i91520:05:281
210899282,9cyclictest4156-21/usr/sbin/munin22:20:131
210899282,8cyclictest17970-21df_inode21:30:141
210899282,12cyclictest916-21diskstats20:45:161
210899281,7cyclictest3102-21hddtemp_smartct20:50:171
210799283,18cyclictest20210-21diskstats20:10:170
210112281,5sleep00-21swapper/021:37:230
126222281,5sleep00-21swapper/000:05:420
114842281,5sleep10-21swapper/121:11:061
210899271,8cyclictest14827-21users22:45:301
2108992716,7cyclictest23557-21cat00:35:271
210799273,6cyclictest30232-21users22:00:320
2107992719,5cyclictest24863-21aten_r4power_cu23:15:120
207402271,5sleep00-21swapper/023:03:040
195412271,4sleep00-21swapper/020:07:530
118072271,5sleep00-21swapper/021:14:270
2107992613,7cyclictest30134-21ntp_states20:35:240
158182261,5sleep00-21swapper/019:58:210
165762251,5sleep00-21swapper/000:17:480
210799246,16cyclictest0-21swapper/000:30:390
210799242,17cyclictest6689-21python23:50:290
2107992413,7cyclictest18111-21fschecks_time21:30:160
210799232,16cyclictest10079-21diskstats22:35:140
2107992313,6cyclictest12417-21wget19:50:110
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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