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2026-09-22 - 14:14

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #1, slot #2

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 all highest latencies:
System rack1slot2s.osadl.org (updated Tue Sep 22, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1090326564,0sleep00-21swapper/006:40:110
1106326059,0sleep10-21swapper/106:42:001
1098824940,0sleep30-21swapper/306:41:103
1090023531,0sleep20-21swapper/206:40:092
29715080,0irq/26-eth0-rx-6299-21load09:38:283
339960,0migration/39113-21sh09:23:103
339960,0migration/323143-21kernelversion08:28:283
339960,0migration/316050-21sh09:04:023
339960,0migration/315274-21sh09:44:183
339960,0migration/314152-21sh11:07:133
29725060,0irq/27-eth0-tx-9558-21munin-node08:43:300
29715060,0irq/26-eth0-rx-7388-21python08:58:323
29715060,0irq/26-eth0-rx-3781-21grep09:58:273
29715060,0irq/26-eth0-rx-19893-21cut09:48:283
29715060,0irq/26-eth0-rx-16752-21grep12:08:263
29715060,0irq/26-eth0-rx-12470-21grep10:23:313
29715060,0irq/26-eth0-rx-0-21swapper/310:35:163
29715060,0irq/26-eth0-rx-0-21swapper/310:14:023
149960,0migration/06402-21open_files07:48:310
149960,0migration/024386-21sh09:52:480
149960,0migration/022553-21sh10:30:240
149960,0migration/013132-21latency_hist07:33:100
112359965,0cyclictest7652-21cut11:43:271
112359960,0cyclictest9310-21diskmemload10:56:561
112359960,0cyclictest0-21swapper/111:38:431
112349960,0cyclictest9310-21diskmemload09:17:120
4150,0ktimersoftd/00-21swapper/011:33:160
4150,0ktimersoftd/00-21swapper/009:24:090
4150,0ktimersoftd/00-21swapper/009:11:040
339950,0migration/3544-21kthreadcore10:58:263
339950,0migration/33905-21kthreadcore10:18:283
339950,0migration/331516-21kthreadcore11:38:273
339950,0migration/331207-21kthreadcore11:58:263
339950,0migration/330084-21taskset11:17:283
339950,0migration/327417-21latency_hist08:08:103
339950,0migration/326539-21latency_hist07:43:103
339950,0migration/326498-21fschecks_time09:13:223
339950,0migration/323522-21ntp_offset06:48:323
339950,0migration/323392-21unixbench_multi09:28:353
339950,0migration/316355-21munin-node10:08:203
339950,0migration/314025-21kthreadcore08:43:293
339950,0migration/313879-21cpuspeed_turbos11:48:213
339950,0migration/313582-21irqrtprio07:08:273
339950,0migration/313018-21sh11:25:413
29725050,0irq/27-eth0-tx-22665-21munin-node11:13:252
29725050,0irq/27-eth0-tx-14283-21munin-node07:58:250
29725050,0irq/27-eth0-tx-11445-21munin-node06:43:330
29725050,0irq/27-eth0-tx-0-21swapper/211:21:102
29725050,0irq/27-eth0-tx-0-21swapper/008:15:340
29725050,0irq/27-eth0-tx-0-21swapper/008:03:220
29725050,0irq/27-eth0-tx-0-21swapper/007:45:290
29725050,0irq/27-eth0-tx-0-21swapper/007:35:270
29715050,0irq/26-eth0-rx-8497-21irqcore10:43:243
29715050,0irq/26-eth0-rx-31016-21diskstats11:18:233
29715050,0irq/26-eth0-rx-19867-21ps11:28:303
29715050,0irq/26-eth0-rx-18398-21kthreadcore10:28:263
29715050,0irq/26-eth0-rx-15880-21tr07:58:273
29715050,0irq/26-eth0-rx-12828-21cut07:53:273
29715050,0irq/26-eth0-rx-0-21swapper/312:03:243
29715050,0irq/26-eth0-rx-0-21swapper/311:53:223
29715050,0irq/26-eth0-rx-0-21swapper/311:37:033
29715050,0irq/26-eth0-rx-0-21swapper/311:11:593
29715050,0irq/26-eth0-rx-0-21swapper/310:53:273
29715050,0irq/26-eth0-rx-0-21swapper/310:05:223
29715050,0irq/26-eth0-rx-0-21swapper/309:33:533
29715050,0irq/26-eth0-rx-0-21swapper/309:09:203
29715050,0irq/26-eth0-rx-0-21swapper/308:53:283
29715050,0irq/26-eth0-rx-0-21swapper/308:48:273
259950,0migration/214141-21sh11:07:112
19150,0ktimersoftd/10-21swapper/108:44:291
169950,0watchdog/19310-21diskmemload09:23:321
169950,0watchdog/13642-21rm11:59:521
169950,0watchdog/127555-21unixbench_singl11:53:321
149950,0migration/09614-21irqcore08:18:260
149950,0migration/09088-21sh09:02:140
149950,0migration/08898-21taskset09:43:230
149950,0migration/07059-21kthreadcore11:43:270
149950,0migration/0367-21kthreadcore11:18:280
149950,0migration/031018-21kthreadcore08:33:280
149950,0migration/030341-21kthreadcore08:53:290
149950,0migration/029700-21sh10:54:410
149950,0migration/029188-21munin-node10:33:270
149950,0migration/02867-21aten_r1power_en08:38:210
149950,0migration/027035-21kthreadcore09:33:270
149950,0migration/026420-21kthreadcore09:53:270
149950,0migration/025080-21munin-node10:13:210
149950,0migration/020575-21kthreadcore10:08:260
149950,0migration/016362-21kthreadcore11:08:260
149950,0migration/015478-21kthreadcore11:28:260
149950,0migration/013380-21munin-node07:08:260
149950,0migration/012165-21kthreadcore10:23:310
149950,0migration/012009-21kthreadcore11:03:260
112369955,0cyclictest0-21swapper/211:26:422
112369955,0cyclictest0-21swapper/210:53:362
112369955,0cyclictest0-21swapper/210:04:342
112369950,0cyclictest0-21swapper/211:01:382
112369950,0cyclictest0-21swapper/210:38:182
112369950,0cyclictest0-21swapper/209:34:462
112369950,0cyclictest0-21swapper/209:05:462
112359955,0cyclictest0-21swapper/112:08:591
112359955,0cyclictest0-21swapper/109:42:511
112359950,0cyclictest0-21swapper/111:07:111
112359950,0cyclictest0-21swapper/109:35:541
112359950,0cyclictest0-21swapper/109:15:531
112349955,0cyclictest26573-21kworker/0:011:16:090
112349955,0cyclictest26573-21kworker/0:009:42:010
112349955,0cyclictest26573-21kworker/0:009:07:580
112349955,0cyclictest0-21swapper/009:58:590
112349950,0cyclictest0-21swapper/012:06:130
8215040,0irq/24-0000:00:32098-21sadc07:23:102
8215040,0irq/24-0000:00:0-21swapper/207:23:492
339940,0migration/39293-21gltestperf08:18:243
339940,0migration/34094-21kthreadcore08:13:283
339940,0migration/325073-21taskset07:13:533
339940,0migration/321247-21timerwakeupswit10:48:313
339940,0migration/312621-21kthreadcore09:23:313
29725040,0irq/27-eth0-tx-9310-21diskmemload10:48:262
29725040,0irq/27-eth0-tx-28354-21ssh11:34:002
29725040,0irq/27-eth0-tx-25909-21ssh08:53:232
29725040,0irq/27-eth0-tx-25803-21munin-node09:13:212
29725040,0irq/27-eth0-tx-24015-21kthreadcore11:53:252
29725040,0irq/27-eth0-tx-14460-21ssh10:24:502
29725040,0irq/27-eth0-tx-0-21swapper/212:08:512
29725040,0irq/27-eth0-tx-0-21swapper/211:48:202
29725040,0irq/27-eth0-tx-0-21swapper/211:39:082
29725040,0irq/27-eth0-tx-0-21swapper/211:28:112
29725040,0irq/27-eth0-tx-0-21swapper/210:43:162
29725040,0irq/27-eth0-tx-0-21swapper/210:33:152
29725040,0irq/27-eth0-tx-0-21swapper/210:28:422
29725040,0irq/27-eth0-tx-0-21swapper/210:08:232
29725040,0irq/27-eth0-tx-0-21swapper/209:48:292
29725040,0irq/27-eth0-tx-0-21swapper/209:08:112
29725040,0irq/27-eth0-tx-0-21swapper/007:38:280
29725040,0irq/27-eth0-tx-0-21swapper/007:13:240
29715040,0irq/26-eth0-rx-0-21swapper/311:43:343
29715040,0irq/26-eth0-rx-0-21swapper/310:39:053
29715040,0irq/26-eth0-rx-0-21swapper/309:55:513
29715040,0irq/26-eth0-rx-0-21swapper/307:48:223
259940,0migration/25332-21cpuspeed_turbos12:03:212
259940,0migration/23246-21kthreadcore10:18:272
259940,0migration/230267-21idleruntime11:58:232
259940,0migration/225510-21irqrtprio10:13:232
259940,0migration/225258-21fschecks_count09:53:242
259940,0migration/224444-21netstat07:13:272
259940,0migration/222985-21missed_timers08:48:302
259940,0migration/220891-21kthreadcore09:28:292
259940,0migration/215989-21irqrtprio11:08:262
259940,0migration/21594-21cpuspeed_turbos09:18:232
259940,0migration/214580-21cpuspeed_turbos07:58:232
259940,0migration/213607-21kthreadcore09:23:312
259940,0migration/213380-21aten_r1power_fr07:33:232
259940,0migration/213305-21munin-node07:53:312
249940,0watchdog/26138-21latency07:48:292
19140,0ktimersoftd/10-21swapper/111:17:261
179940,0migration/18620-21kthreadcore07:03:271
179940,0migration/12854-21kthreadcore07:48:281
179940,0migration/12722-21latency_hist08:38:101
179940,0migration/127162-21kthreadcore08:53:281
179940,0migration/113004-21kthreadcore06:43:271
169940,0watchdog/17022-21tr08:13:291
169940,0watchdog/12010-21fschecks_time09:18:241
169940,0watchdog/119820-21tr09:28:281
169940,0watchdog/119069-21kthreadcore08:48:281
169940,0watchdog/10-21swapper/111:18:281
169940,0watchdog/10-21swapper/110:38:281
169940,0watchdog/10-21swapper/110:28:121
169940,0watchdog/10-21swapper/109:58:361
169940,0watchdog/10-21swapper/109:53:281
169940,0watchdog/10-21swapper/109:48:281
149940,0migration/06252-21kthreadcore09:18:300
149940,0migration/030640-21kthreadcore08:08:270
149940,0migration/021568-21kthreadcore06:48:300
149940,0migration/020546-21runrttasks12:12:560
149940,0migration/013855-21missed_timers10:03:330
149940,0migration/013189-21runrttasks07:53:300
112369943,0cyclictest9783-21awk09:43:282
112369943,0cyclictest3514-21snmpd11:43:402
112369943,0cyclictest3514-21snmpd10:01:382
112369943,0cyclictest3514-21snmpd07:45:522
112369943,0cyclictest3514-21snmpd07:38:522
112369943,0cyclictest3514-21snmpd07:29:072
112369943,0cyclictest3514-21snmpd07:06:512
112369943,0cyclictest3514-21snmpd06:43:212
112369943,0cyclictest3241-21irqbalance08:43:192
112369943,0cyclictest3241-21irqbalance08:33:192
112369943,0cyclictest3241-21irqbalance08:28:192
112369943,0cyclictest3241-21irqbalance08:25:392
112369943,0cyclictest3241-21irqbalance08:18:492
112369943,0cyclictest3241-21irqbalance08:08:292
112369943,0cyclictest3241-21irqbalance08:03:192
112369943,0cyclictest3241-21irqbalance06:58:192
112369943,0cyclictest3241-21irqbalance06:53:192
112369943,0cyclictest1739-21awk09:38:252
112369941,0cyclictest1503-21munin-node08:58:232
112369940,0cyclictest0-21swapper/208:38:482
112359944,0cyclictest0-21swapper/110:34:431
112359943,0cyclictest9284-21awk10:03:291
112359943,0cyclictest649-21awk10:18:251
112359943,0cyclictest3556-21lldpd12:04:101
112359943,0cyclictest3556-21lldpd11:35:411
112359943,0cyclictest3556-21lldpd10:09:111
112359943,0cyclictest3556-21lldpd07:44:101
112359943,0cyclictest3514-21snmpd10:44:241
112359943,0cyclictest3514-21snmpd08:24:221
112359943,0cyclictest3514-21snmpd08:10:371
112359943,0cyclictest3514-21snmpd08:07:371
112359943,0cyclictest3514-21snmpd08:00:071
112359943,0cyclictest3514-21snmpd07:58:071
112359943,0cyclictest3241-21irqbalance10:13:281
112359943,0cyclictest3241-21irqbalance09:45:481
112359943,0cyclictest3241-21irqbalance07:38:491
112359943,0cyclictest3241-21irqbalance07:28:291
112359943,0cyclictest3241-21irqbalance07:23:191
112359943,0cyclictest3241-21irqbalance07:18:391
112359943,0cyclictest19877-21awk07:13:231
112359943,0cyclictest19026-21awk06:48:281
112359943,0cyclictest15740-21awk11:08:251
112359943,0cyclictest14984-21sadc08:23:101
112359943,0cyclictest14163-21awk07:33:261
112359943,0cyclictest13307-21awk07:08:261
112349944,0cyclictest26573-21kworker/0:011:02:230
112349944,0cyclictest14592-21cut11:48:240
112349943,0cyclictest7064-21sadc10:43:100
112349943,0cyclictest6665-21awk07:03:260
112349943,0cyclictest3556-21lldpd11:56:100
112349943,0cyclictest3556-21lldpd08:23:110
112349943,0cyclictest26573-21kworker/0:008:51:160
112349943,0cyclictest0-21swapper/007:23:220
339930,0migration/329503-21if_eth1.308:33:263
339930,0migration/312879-21taskset07:30:573
29725030,0irq/27-eth0-tx-0-21swapper/006:58:220
29715030,0irq/26-eth0-rx-0-21swapper/307:41:193
29715030,0irq/26-eth0-rx-0-21swapper/307:33:263
29715030,0irq/26-eth0-rx-0-21swapper/307:23:323
29715030,0irq/26-eth0-rx-0-21swapper/307:18:323
29715030,0irq/26-eth0-rx-0-21swapper/307:03:163
249930,0watchdog/20-21swapper/206:48:292
179930,0migration/16533-21kthreadcore08:38:271
169930,0watchdog/10-21swapper/110:48:201
169930,0watchdog/10-21swapper/109:03:241
169930,0watchdog/10-21swapper/108:28:251
112369932,0cyclictest4419-21grep08:13:282
112369932,0cyclictest12940-21fschecks_time07:08:242
112359933,0cyclictest3556-21lldpd10:58:111
112359932,0cyclictest8885-21awk10:23:291
112359932,0cyclictest3556-21lldpd11:24:111
112359932,0cyclictest3556-21lldpd06:54:101
112359932,0cyclictest2452-21awk08:58:251
112359932,0cyclictest21180-21cut09:08:281
112359932,0cyclictest16373-21kthreadcore11:48:261
112359932,0cyclictest14941-21idleruntime11:28:241
112349933,0cyclictest26573-21kworker/0:011:58:110
112349933,0cyclictest26573-21kworker/0:011:23:110
112349933,0cyclictest26573-21kworker/0:010:43:170
112349933,0cyclictest26573-21kworker/0:010:18:290
112349933,0cyclictest26573-21kworker/0:009:28:130
112349933,0cyclictest26573-21kworker/0:008:28:240
112349933,0cyclictest26573-21kworker/0:007:18:220
112349933,0cyclictest26573-21kworker/0:006:53:120
112349932,0cyclictest3556-21lldpd10:48:110
112349932,0cyclictest3388-21sensors11:38:310
29715020,0irq/26-eth0-rx-0-21swapper/308:38:123
29715020,0irq/26-eth0-rx-0-21swapper/308:23:133
29715020,0irq/26-eth0-rx-0-21swapper/308:08:223
29715020,0irq/26-eth0-rx-0-21swapper/306:58:323
29715020,0irq/26-eth0-rx-0-21swapper/306:53:323
11444220,0sleep30-21swapper/306:43:223
112359921,0cyclictest31319-21latency_hist06:58:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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