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2026-06-15 - 05:10

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #3, slot #5

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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  Eltec
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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.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes
Compare latency of primary with shadow system
Characteristics of the 792 highest latencies:
System rack3slot5s.osadl.org (updated Mon Jun 15, 2026 00:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
101582770sleep1121750irq/30-eth0_g0_19:09:271
167892740sleep0121650irq/29-eth0_g0_00:02:130
79752730chrt121750irq/30-eth0_g0_23:24:361
79752730chrt121750irq/30-eth0_g0_23:24:361
20172670sleep1121750irq/30-eth0_g0_23:01:401
121640ksoftirqd/1121750irq/30-eth0_g0_00:04:190
121620ksoftirqd/1121750irq/30-eth0_g0_19:15:101
121600ksoftirqd/1121750irq/30-eth0_g0_23:16:301
188712510sleep1121750irq/30-eth0_g0_21:59:171
125682510sleep1121650irq/29-eth0_g0_21:33:501
148852500sleep1121750irq/30-eth0_g0_23:54:221
121500ksoftirqd/1121650irq/29-eth0_g0_23:54:150
121480ksoftirqd/1121750irq/30-eth0_g0_00:24:261
121480ksoftirqd/1121650irq/29-eth0_g0_22:55:220
121480ksoftirqd/1121650irq/29-eth0_g0_22:01:150
211732470sleep1121750irq/30-eth0_g0_22:09:061
121470ksoftirqd/1121750irq/30-eth0_g0_23:29:521
121470ksoftirqd/1121750irq/30-eth0_g0_00:09:251
121460ksoftirqd/1121750irq/30-eth0_g0_23:42:221
83522450sleep0121650irq/29-eth0_g0_23:28:590
83522450sleep0121650irq/29-eth0_g0_23:28:590
315842450sleep1121750irq/30-eth0_g0_22:49:251
121750450irq/30-eth0_g0_10235-21/usr/sbin/munin21:24:241
121750450irq/30-eth0_g0_10235-21/usr/sbin/munin21:24:241
121650450irq/29-eth0_g0_3923-21/usr/sbin/munin23:09:210
121750440irq/30-eth0_g0_1219-21kworker/1:200:21:211
121440ksoftirqd/1121750irq/30-eth0_g0_23:50:091
121440ksoftirqd/1121750irq/30-eth0_g0_20:07:000
121440ksoftirqd/1121650irq/29-eth0_g0_21:14:221
121440ksoftirqd/1121650irq/29-eth0_g0_19:19:271
172562430sleep0121650irq/29-eth0_g0_21:51:210
121750430irq/30-eth0_g0_1219-21kworker/1:200:29:241
121650430irq/29-eth0_g0_0-21swapper/021:44:300
121430ksoftirqd/1121650irq/29-eth0_g0_21:59:041
121430ksoftirqd/1121650irq/29-eth0_g0_21:59:041
41250420irq/22-fsldma-c1219-21kworker/1:223:19:251
121750420irq/30-eth0_g0_1219-21kworker/1:221:48:411
121650420irq/29-eth0_g0_13-21kworker/0:122:22:040
121650420irq/29-eth0_g0_13-21kworker/0:121:39:180
121650420irq/29-eth0_g0_121ksoftirqd/100:04:231
121420ksoftirqd/1121650irq/29-eth0_g0_23:14:390
121420ksoftirqd/1121650irq/29-eth0_g0_21:28:180
121420ksoftirqd/1121650irq/29-eth0_g0_21:28:180
121750410irq/30-eth0_g0_31ksoftirqd/019:49:060
121750410irq/30-eth0_g0_26359-21if_eth022:29:211
121650410irq/29-eth0_g0_8936-21unixbench_multi19:04:270
121650410irq/29-eth0_g0_1964-21runrttasks20:15:320
121650410irq/29-eth0_g0_13-21kworker/0:122:30:480
121650410irq/29-eth0_g0_13-21kworker/0:122:19:020
121650410irq/29-eth0_g0_13-21kworker/0:121:38:080
121410ksoftirqd/1121650irq/29-eth0_g0_22:25:050
121410ksoftirqd/1121650irq/29-eth0_g0_21:51:501
944399402cyclictest4193-21unixbench_multi23:09:271
944399401cyclictest270132sleep120:19:221
121750400irq/30-eth0_g0_1219-21kworker/1:222:13:431
121650400irq/29-eth0_g0_31ksoftirqd/023:19:410
121650400irq/29-eth0_g0_13-21kworker/0:123:30:470
121650400irq/29-eth0_g0_13-21kworker/0:123:04:300
121650400irq/29-eth0_g0_13-21kworker/0:122:59:080
121650400irq/29-eth0_g0_13-21kworker/0:122:35:130
121650400irq/29-eth0_g0_13-21kworker/0:122:14:020
121650400irq/29-eth0_g0_13-21kworker/0:122:04:420
121650400irq/29-eth0_g0_13-21kworker/0:100:26:200
121650400irq/29-eth0_g0_13-21kworker/0:100:22:580
121650400irq/29-eth0_g0_13-21kworker/0:100:13:210
121650400irq/29-eth0_g0_121ksoftirqd/121:16:380
121400ksoftirqd/1121650irq/29-eth0_g0_23:47:511
944399391cyclictest4073-21chrt20:59:071
121750390irq/30-eth0_g0_1219-21kworker/1:221:22:131
121750390irq/30-eth0_g0_121ksoftirqd/122:41:521
121650390irq/29-eth0_g0_31ksoftirqd/023:49:270
121650390irq/29-eth0_g0_31ksoftirqd/022:49:220
121650390irq/29-eth0_g0_31ksoftirqd/020:49:210
121650390irq/29-eth0_g0_31ksoftirqd/000:34:020
121650390irq/29-eth0_g0_29762-21sort22:44:070
121650390irq/29-eth0_g0_13-21kworker/0:123:36:200
121650390irq/29-eth0_g0_13-21kworker/0:121:58:460
121650390irq/29-eth0_g0_13-21kworker/0:121:58:460
121390ksoftirqd/1121750irq/30-eth0_g0_00:14:181
121390ksoftirqd/1121650irq/29-eth0_g0_21:11:461
121390ksoftirqd/1121650irq/29-eth0_g0_20:50:591
121390ksoftirqd/1121650irq/29-eth0_g0_19:33:311
944399382cyclictest2392-21df_abs23:04:191
944399381cyclictest25640-21grep22:24:281
121750380irq/30-eth0_g0_22490-21/usr/sbin/munin22:14:251
121750380irq/30-eth0_g0_0-21swapper/120:04:251
121750380irq/30-eth0_g0_0-21swapper/119:08:291
121750380irq/30-eth0_g0_0-21swapper/100:35:551
121650380irq/29-eth0_g0_6896-21netstat21:09:220
121650380irq/29-eth0_g0_4626-21fgrep20:59:260
121650380irq/29-eth0_g0_15987-21ls19:34:230
121650380irq/29-eth0_g0_137822sleep121:38:421
121650380irq/29-eth0_g0_13-21kworker/0:123:47:220
121650380irq/29-eth0_g0_13-21kworker/0:122:44:500
121650380irq/29-eth0_g0_13-21kworker/0:122:44:500
121380ksoftirqd/1121650irq/29-eth0_g0_20:09:551
121380ksoftirqd/1121650irq/29-eth0_g0_19:54:461
121380ksoftirqd/1121650irq/29-eth0_g0_19:54:461
944399372cyclictest4770-21grep20:59:281
944399372cyclictest32182-21cat20:39:271
944399372cyclictest26164-21unixbench_singl20:14:291
944399371cyclictest30627-21expr20:34:221
944399371cyclictest30627-21expr20:34:221
944399371cyclictest28497-21swap20:24:271
944399371cyclictest24397-21grep22:19:281
944399371cyclictest22452-21unixbench_multi19:59:281
121750370irq/30-eth0_g0_13874-21taskset19:24:251
121750370irq/30-eth0_g0_121ksoftirqd/122:48:181
121750370irq/30-eth0_g0_121ksoftirqd/122:48:181
121750370irq/30-eth0_g0_0-21swapper/122:57:121
121750370irq/30-eth0_g0_0-21swapper/121:41:421
121650370irq/29-eth0_g0_9237-21irqstats21:19:190
121650370irq/29-eth0_g0_31923-21cat20:39:220
121650370irq/29-eth0_g0_1964-21runrttasks20:55:400
121650370irq/29-eth0_g0_13-21kworker/0:100:16:170
121650370irq/29-eth0_g0_12140-21unixbench_singl21:29:290
121370ksoftirqd/1121750irq/30-eth0_g0_00:34:320
121370ksoftirqd/1121650irq/29-eth0_g0_22:39:071
121370ksoftirqd/1121650irq/29-eth0_g0_00:00:551
944399362cyclictest182682sleep119:44:201
944399361cyclictest5614-21memory21:04:221
944399361cyclictest1528-21munin-run20:49:061
944399361cyclictest10314-21unixbench_multi23:34:271
799360migration/017571-21unixbench_singl19:39:270
121650360irq/29-eth0_g0_27078-21ntp_kernel_pll_20:19:230
121650360irq/29-eth0_g0_1964-21runrttasks19:24:120
121650360irq/29-eth0_g0_13-21kworker/0:123:40:500
121360ksoftirqd/1121750irq/30-eth0_g0_19:13:110
121750350irq/30-eth0_g0_19340-21/usr/sbin/munin19:49:170
121650350irq/29-eth0_g0_29813-21unixbench_multi20:29:290
121650350irq/29-eth0_g0_28384-21proc_pri20:24:250
121650350irq/29-eth0_g0_24841-21timerandwakeup20:09:260
121650350irq/29-eth0_g0_1964-21runrttasks21:07:070
121650350irq/29-eth0_g0_1964-21runrttasks20:37:340
121650350irq/29-eth0_g0_1964-21runrttasks20:37:340
121650350irq/29-eth0_g0_1964-21runrttasks19:56:340
121650350irq/29-eth0_g0_1964-21runrttasks19:56:340
121650350irq/29-eth0_g0_14688-21sort19:29:220
121650350irq/29-eth0_g0_10914-21df_inode19:14:190
121350ksoftirqd/1121650irq/29-eth0_g0_20:29:221
944399341cyclictest17573-21grep19:39:271
121750340irq/30-eth0_g0_944299cyclictest19:59:260
121750340irq/30-eth0_g0_0-21swapper/119:34:191
121650340irq/29-eth0_g0_491-21df_abs20:44:170
121650340irq/29-eth0_g0_12655-21grep19:19:280
121750330irq/30-eth0_g0_19346-21cpu19:49:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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