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2025-11-14 - 11:46

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 highest latencies:
System rack3slot5s.osadl.org (updated Fri Nov 14, 2025 00:43:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2623621550sleep0451750irq/29-eth0_g0_21:12:140
80822830sleep0451750irq/29-eth0_g0_00:22:320
242922740sleep1451850irq/30-eth0_g0_23:14:471
451750520irq/29-eth0_g0_2814399cyclictest21:49:460
307942510chrt451750irq/29-eth0_g0_23:43:540
307942510chrt451750irq/29-eth0_g0_23:43:540
121510ksoftirqd/1451850irq/30-eth0_g0_00:12:570
208352490sleep1451850irq/30-eth0_g0_23:02:201
74132480sleep1451850irq/30-eth0_g0_22:08:141
232762470chrt451750irq/29-eth0_g0_23:12:121
193842460sleep0451750irq/29-eth0_g0_22:54:470
451750450irq/29-eth0_g0_2814399cyclictest23:02:020
451750440irq/29-eth0_g0_4111-21unixbench_singl00:04:491
121440ksoftirqd/1451850irq/30-eth0_g0_21:32:011
121440ksoftirqd/1451850irq/30-eth0_g0_00:23:551
451850430irq/30-eth0_g0_2814399cyclictest21:28:580
451750430irq/29-eth0_g0_2814399cyclictest00:14:240
451850420irq/30-eth0_g0_2814399cyclictest22:36:470
451750420irq/29-eth0_g0_470-21kworker/1:123:37:241
451750420irq/29-eth0_g0_470-21kworker/1:123:37:241
451750420irq/29-eth0_g0_27656-21unixbench_multi19:04:431
121420ksoftirqd/1451850irq/30-eth0_g0_00:18:451
451850410irq/30-eth0_g0_2814399cyclictest21:16:570
451750410irq/29-eth0_g0_470-21kworker/1:123:41:121
451750410irq/29-eth0_g0_470-21kworker/1:123:41:121
451750410irq/29-eth0_g0_3075-21awk21:49:411
24282410sleep1451850irq/30-eth0_g0_21:47:241
451850400irq/30-eth0_g0_2814399cyclictest21:30:330
451750400irq/29-eth0_g0_8352-21taskset22:09:541
451750400irq/29-eth0_g0_8352-21taskset22:09:541
451750400irq/29-eth0_g0_470-21kworker/1:123:58:251
451750400irq/29-eth0_g0_470-21kworker/1:123:05:071
451750400irq/29-eth0_g0_259002sleep123:24:061
451750390irq/29-eth0_g0_470-21kworker/1:123:45:161
451750390irq/29-eth0_g0_470-21kworker/1:123:26:181
451750390irq/29-eth0_g0_470-21kworker/1:122:47:151
451750390irq/29-eth0_g0_470-21kworker/1:122:14:581
451750390irq/29-eth0_g0_470-21kworker/1:122:14:581
451750390irq/29-eth0_g0_2814399cyclictest22:25:170
451750390irq/29-eth0_g0_26976-21wc21:14:421
451850380irq/30-eth0_g0_2814399cyclictest23:13:570
451850380irq/30-eth0_g0_2814399cyclictest21:23:530
451750370irq/29-eth0_g0_2814399cyclictest22:15:470
451750370irq/29-eth0_g0_2814399cyclictest22:15:470
451750370irq/29-eth0_g0_1955-21runrttasks00:36:491
28144993732cyclictest0-21swapper/120:39:471
121370ksoftirqd/1451850irq/30-eth0_g0_22:49:580
451850360irq/30-eth0_g0_2814399cyclictest23:18:040
451850360irq/30-eth0_g0_1955-21runrttasks20:33:141
451850360irq/30-eth0_g0_1955-21runrttasks20:18:051
451750360irq/29-eth0_g0_470-21kworker/1:121:28:291
451750360irq/29-eth0_g0_24445-21/usr/sbin/munin21:04:401
451750360irq/29-eth0_g0_1955-21runrttasks19:04:310
121360ksoftirqd/1451750irq/29-eth0_g0_21:37:300
451850350irq/30-eth0_g0_1955-21runrttasks19:36:001
451750350irq/29-eth0_g0_470-21kworker/1:122:57:121
451750350irq/29-eth0_g0_470-21kworker/1:122:36:001
451750350irq/29-eth0_g0_470-21kworker/1:122:26:031
451750350irq/29-eth0_g0_470-21kworker/1:122:24:101
451750350irq/29-eth0_g0_3923-21egrep21:54:331
451750350irq/29-eth0_g0_2814499cyclictest21:35:311
451750350irq/29-eth0_g0_26075-21runrttasks21:10:231
451750350irq/29-eth0_g0_1955-21runrttasks20:48:341
451750350irq/29-eth0_g0_1955-21runrttasks20:48:341
451750350irq/29-eth0_g0_1955-21runrttasks20:28:221
451850340irq/30-eth0_g0_2814499cyclictest19:44:401
451850340irq/30-eth0_g0_2814399cyclictest23:33:530
451850340irq/30-eth0_g0_2814399cyclictest21:48:480
451750340irq/29-eth0_g0_470-21kworker/1:100:30:261
451750340irq/29-eth0_g0_470-21kworker/1:100:13:311
451750340irq/29-eth0_g0_470-21kworker/1:100:03:361
451750340irq/29-eth0_g0_23466-21unixbench_multi20:59:471
451750340irq/29-eth0_g0_21084-21unixbench_singl20:49:471
451750340irq/29-eth0_g0_21084-21unixbench_singl20:49:471
451750340irq/29-eth0_g0_1955-21runrttasks19:32:081
451750340irq/29-eth0_g0_1955-21runrttasks19:32:081
451750340irq/29-eth0_g0_17857-21cat20:39:221
62782330sleep0451750irq/29-eth0_g0_22:04:190
451850330irq/30-eth0_g0_2814499cyclictest22:39:461
451750330irq/29-eth0_g0_470-21kworker/1:123:34:171
451750330irq/29-eth0_g0_470-21kworker/1:122:49:531
451750330irq/29-eth0_g0_470-21kworker/1:122:32:061
451750330irq/29-eth0_g0_470-21kworker/1:100:29:121
451750330irq/29-eth0_g0_3601-21open_files19:39:421
451750330irq/29-eth0_g0_29903-21pluginstate19:14:431
451750330irq/29-eth0_g0_2814499cyclictest23:51:441
451750330irq/29-eth0_g0_2814499cyclictest21:43:391
451750330irq/29-eth0_g0_2814399cyclictest00:29:430
451750330irq/29-eth0_g0_0-21swapper/121:59:411
44762330sleep0451750irq/29-eth0_g0_00:08:280
451750320irq/29-eth0_g0_8466-21netstat19:59:381
451750320irq/29-eth0_g0_28887-21latency_hist21:24:231
451750320irq/29-eth0_g0_21958-21netstat20:54:391
451750320irq/29-eth0_g0_21958-21netstat20:54:391
2814399328cyclictest22832-21/usr/sbin/munin20:59:360
28143993219cyclictest15985-21processes20:29:440
28143993214cyclictest21160-21runrttasks20:50:220
28143993214cyclictest21160-21runrttasks20:50:220
451850310irq/30-eth0_g0_2814399cyclictest23:44:360
451850310irq/30-eth0_g0_2814399cyclictest23:36:410
451850310irq/30-eth0_g0_2814399cyclictest23:36:410
451750310irq/29-eth0_g0_7492-21unixbench_multi19:54:441
451750310irq/29-eth0_g0_31241-21mailstats19:19:461
451750310irq/29-eth0_g0_10712-21df_inode20:09:391
2814399316cyclictest13164-21taskset20:19:350
2814399315cyclictest32452-21memory23:49:400
2814399315cyclictest18629-21sed20:39:470
2814399315cyclictest11541-21runrttasks20:12:420
2814399314cyclictest11979-21latency_hist00:39:230
2814399313cyclictest87151/usr/sbin/munin00:24:430
28143993122cyclictest31538-21taskset19:21:040
28143993122cyclictest15043-21chrt20:25:360
451850300irq/30-eth0_g0_32353-21open_inodes19:24:411
451850300irq/30-eth0_g0_2814399cyclictest23:21:250
451750300irq/29-eth0_g0_9572-21wc20:04:401
451750300irq/29-eth0_g0_2814499cyclictest19:49:361
451750300irq/29-eth0_g0_0-21swapper/119:14:231
2814399308cyclictest6509-21df22:04:360
2814399308cyclictest3762-21cat19:39:450
2814399306cyclictest283902chrt19:09:360
2814399306cyclictest21344-21irqstats23:04:370
2814399305cyclictest2928-21runrttasks23:59:450
2814399305cyclictest198291grep20:44:470
2814399305cyclictest198291grep20:44:470
2814399304cyclictest820-21/usr/sbin/munin19:29:350
2814399304cyclictest820-21/usr/sbin/munin19:29:350
2814399303cyclictest5420-21runrttasks19:47:540
2814399303cyclictest1082-21chrt21:41:240
28143993021cyclictest8359-21taskset22:09:590
28143993021cyclictest8359-21taskset22:09:590
28143993021cyclictest15807-21taskset22:40:580
28143993021cyclictest12586-21seq20:15:360
28143993021cyclictest10404-21chrt20:08:460
28143993020cyclictest5771-21/usr/sbin/munin19:49:370
28143993016cyclictest17434-21taskset20:34:520
121300ksoftirqd/1451750irq/29-eth0_g0_22:30:410
451850290irq/30-eth0_g0_2814399cyclictest22:44:420
451750290irq/29-eth0_g0_0-21swapper/120:20:411
2814399294cyclictest30113-21unixbench_multi19:14:460
2814399294cyclictest13-21kworker/0:123:24:430
2814399293cyclictest1628-21unixbench_singl23:54:460
28143992920cyclictest7832-21seq19:57:240
28143992920cyclictest32356-21pluginstate19:24:410
2814399292cyclictest22297-21unixbench_singl20:54:450
2814399292cyclictest22297-21unixbench_singl20:54:450
2814399291cyclictest2535-21timerandwakeup19:34:440
2814399286cyclictest5017-21runrttasks21:58:560
2814399286cyclictest24689-21grep21:04:440
2814399285cyclictest83892sleep019:59:370
451850270irq/30-eth0_g0_2814399cyclictest22:19:450
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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