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2026-07-27 - 20:57

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 Mon Jul 27, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
304450970,0irq/25-eth10-21swapper/306:47:333
309023823,0sleep00-21swapper/006:44:550
317823525,0sleep20-21swapper/206:45:572
335123323,0sleep10-21swapper/106:47:481
35079976,0cyclictest29459-21tr09:03:541
35089960,0cyclictest0-21swapper/212:05:052
339960,0migration/37644-21sh09:50:533
339960,0migration/329243-21sh11:26:453
339960,0migration/323155-21sh10:21:353
339960,0migration/314547-21sh10:58:213
339960,0migration/312313-21sh11:35:163
29715060,0irq/26-eth0-rx-26164-21cut12:03:553
259960,0migration/213134-21sh11:37:522
8215050,0irq/24-0000:00:1807-21munin-plugin-st08:48:362
4150,0ktimersoftd/00-21swapper/010:18:370
35089955,0cyclictest0-21swapper/212:10:262
35089955,0cyclictest0-21swapper/211:22:402
35089955,0cyclictest0-21swapper/208:28:372
35089950,0cyclictest0-21swapper/209:45:332
35069955,0cyclictest0-21swapper/011:23:290
35069955,0cyclictest0-21swapper/011:15:170
35069955,0cyclictest0-21swapper/010:08:360
35069954,0cyclictest3514-21snmpd08:48:230
35069954,0cyclictest17088-21sleep06:58:370
35069950,0cyclictest0-21swapper/012:16:180
35069950,0cyclictest0-21swapper/011:46:400
35069950,0cyclictest0-21swapper/011:38:280
35069950,0cyclictest0-21swapper/010:34:270
35069950,0cyclictest0-21swapper/009:11:510
339950,0migration/39109-21cpuspeed_turbos09:53:473
339950,0migration/38142-21fschecks_count10:33:503
339950,0migration/332675-21cpuspeed_turbos07:58:483
339950,0migration/331173-21munin-node11:08:493
339950,0migration/329918-21taskset10:44:553
339950,0migration/328395-21munin-node11:03:573
339950,0migration/325634-21munin-node10:03:533
339950,0migration/325148-21kthreadcore07:03:523
339950,0migration/323350-21taskset10:00:183
339950,0migration/321677-21kthreadcore07:23:563
339950,0migration/321665-21fschecks_time08:38:513
339950,0migration/321587-21kthreadcore06:58:533
339950,0migration/318928-21munin-node08:08:563
339950,0migration/318806-21taskset07:47:583
339950,0migration/318233-21aten_r1power_po08:58:473
339950,0migration/317056-21munin-node07:18:563
339950,0migration/312401-21kthreadcore09:13:523
339950,0migration/31123-21switchtime08:44:003
29725050,0irq/27-eth0-tx-5594-21ssh11:12:092
29725050,0irq/27-eth0-tx-4427-21munin-node12:13:572
29725050,0irq/27-eth0-tx-32646-21munin-node10:08:522
29725050,0irq/27-eth0-tx-22378-21ssh10:41:032
29725050,0irq/27-eth0-tx-21925-21ssh11:01:462
29725050,0irq/27-eth0-tx-11599-21ssh11:55:082
29725050,0irq/27-eth0-tx-1034-21munin-node08:23:552
29725050,0irq/27-eth0-tx-0-21swapper/211:59:012
29725050,0irq/27-eth0-tx-0-21swapper/211:43:492
29725050,0irq/27-eth0-tx-0-21swapper/211:08:212
29725050,0irq/27-eth0-tx-0-21swapper/210:35:492
29725050,0irq/27-eth0-tx-0-21swapper/208:55:522
29715050,0irq/26-eth0-rx-7875-21python09:09:003
29715050,0irq/26-eth0-rx-6694-21sh10:31:383
29715050,0irq/26-eth0-rx-5247-21ssh11:53:493
29715050,0irq/26-eth0-rx-31448-21python07:53:573
29715050,0irq/26-eth0-rx-31333-21kthreadcore12:08:523
29715050,0irq/26-eth0-rx-30065-21grep10:23:593
29715050,0irq/26-eth0-rx-18568-21ntp_kernel_pll_11:58:553
29715050,0irq/26-eth0-rx-0-21swapper/311:50:473
29715050,0irq/26-eth0-rx-0-21swapper/311:43:133
29715050,0irq/26-eth0-rx-0-21swapper/311:33:313
29715050,0irq/26-eth0-rx-0-21swapper/311:20:243
29715050,0irq/26-eth0-rx-0-21swapper/311:16:323
29715050,0irq/26-eth0-rx-0-21swapper/311:02:513
29715050,0irq/26-eth0-rx-0-21swapper/310:48:543
29715050,0irq/26-eth0-rx-0-21swapper/310:39:343
29715050,0irq/26-eth0-rx-0-21swapper/310:16:593
29715050,0irq/26-eth0-rx-0-21swapper/309:46:263
29715050,0irq/26-eth0-rx-0-21swapper/309:39:023
29715050,0irq/26-eth0-rx-0-21swapper/309:33:453
29715050,0irq/26-eth0-rx-0-21swapper/309:32:043
29715050,0irq/26-eth0-rx-0-21swapper/309:06:243
27150,0ktimersoftd/20-21swapper/210:48:082
259950,0migration/27576-21kthreadcore06:48:532
259950,0migration/25553-21sh10:49:582
259950,0migration/227048-21kthreadcore10:03:552
259950,0migration/224663-21fschecks_time10:23:492
259950,0migration/222635-21switchtime09:58:572
259950,0migration/217762-21latency_hist09:18:362
259950,0migration/216969-21sh10:18:502
179950,0migration/18500-21kthreadcore07:38:541
179950,0migration/13349-21open_files11:28:581
179950,0migration/132376-21df_abs10:28:491
179950,0migration/130605-21latency09:43:551
179950,0migration/119851-21needreboot08:33:561
179950,0migration/116612-21latency_hist09:58:361
179950,0migration/114587-21kthreadcore09:33:541
179950,0migration/112929-21timerandwakeup10:54:021
179950,0migration/111201-21sh12:15:471
169950,0watchdog/15474-21grep10:08:541
169950,0watchdog/125975-21kthreadcore11:43:531
169950,0watchdog/10-21swapper/108:18:541
149950,0migration/08954-21sh08:51:260
149950,0migration/05521-21kthreadcore09:28:510
149950,0migration/024499-21sh08:59:310
149950,0migration/023596-21aten_r1power_po10:43:470
149950,0migration/02265-21kthreadcore09:48:540
149950,0migration/022013-21irqcore12:03:530
149950,0migration/016857-21sh09:37:590
149950,0migration/010554-21switchtime07:14:010
35089943,0cyclictest725-21grep07:58:502
35089943,0cyclictest3514-21snmpd07:43:082
35089943,0cyclictest30387-21awk11:48:512
35089943,0cyclictest18275-21awk09:38:522
35089943,0cyclictest11283-21awk06:53:522
35079944,0cyclictest0-21swapper/112:01:341
35079943,0cyclictest5971-21awk11:53:521
35079943,0cyclictest5271-21grep07:13:511
35079943,0cyclictest3556-21lldpd10:28:281
35079943,0cyclictest3556-21lldpd10:19:581
35079943,0cyclictest3556-21lldpd09:59:581
35079943,0cyclictest3556-21lldpd09:22:581
35079943,0cyclictest3556-21lldpd09:10:281
35079943,0cyclictest3556-21lldpd08:44:581
35079943,0cyclictest3556-21lldpd08:12:581
35079943,0cyclictest3556-21lldpd07:20:281
35079943,0cyclictest3556-21lldpd06:48:571
35079943,0cyclictest3514-21snmpd09:14:231
35079943,0cyclictest31364-21awk07:08:521
35079943,0cyclictest30411-21awk11:48:511
35079943,0cyclictest30194-21sadc07:08:361
35079943,0cyclictest29720-21awk12:08:491
35079943,0cyclictest23140-21awk11:23:511
35079943,0cyclictest19018-21awk07:23:531
35079943,0cyclictest17952-21awk06:58:511
35069944,0cyclictest0-21swapper/010:58:350
35069944,0cyclictest0-21swapper/010:14:170
35069943,0cyclictest3556-21lldpd07:53:580
35069943,0cyclictest3556-21lldpd07:32:280
35069943,0cyclictest3514-21snmpd10:50:080
35069943,0cyclictest3514-21snmpd09:56:380
35069943,0cyclictest3514-21snmpd07:58:380
35069943,0cyclictest3514-21snmpd07:36:530
35069943,0cyclictest3241-21irqbalance12:08:540
35069943,0cyclictest3241-21irqbalance11:53:340
35069943,0cyclictest3241-21irqbalance11:30:540
35069943,0cyclictest3241-21irqbalance11:04:140
35069943,0cyclictest3241-21irqbalance10:59:040
35069943,0cyclictest3241-21irqbalance10:38:440
35069943,0cyclictest3241-21irqbalance09:59:040
35069943,0cyclictest3241-21irqbalance09:39:340
35069943,0cyclictest3241-21irqbalance09:04:140
35069943,0cyclictest3241-21irqbalance08:14:240
35069943,0cyclictest3241-21irqbalance08:04:450
35069943,0cyclictest3241-21irqbalance07:20:250
35069943,0cyclictest25633-21awk10:03:530
35069943,0cyclictest13884-21awk11:58:500
35069943,0cyclictest10893-21sort08:53:510
35069940,0cyclictest17722-21cut11:38:520
339940,0migration/39747-21unixbench_singl06:49:003
29725040,0irq/27-eth0-tx-31485-21munin-node07:33:512
29725040,0irq/27-eth0-tx-26721-21munin-node08:19:002
29725040,0irq/27-eth0-tx-14470-21munin-node08:33:502
29725040,0irq/27-eth0-tx-0-21swapper/211:40:022
29725040,0irq/27-eth0-tx-0-21swapper/211:13:422
29725040,0irq/27-eth0-tx-0-21swapper/210:53:432
29725040,0irq/27-eth0-tx-0-21swapper/210:29:502
29725040,0irq/27-eth0-tx-0-21swapper/209:53:562
29725040,0irq/27-eth0-tx-0-21swapper/209:33:422
29725040,0irq/27-eth0-tx-0-21swapper/209:28:372
29725040,0irq/27-eth0-tx-0-21swapper/209:23:442
29725040,0irq/27-eth0-tx-0-21swapper/209:18:472
29725040,0irq/27-eth0-tx-0-21swapper/209:08:392
29725040,0irq/27-eth0-tx-0-21swapper/208:58:382
29725040,0irq/27-eth0-tx-0-21swapper/208:53:002
29725040,0irq/27-eth0-tx-0-21swapper/207:43:472
29715040,0irq/26-eth0-rx-0-21swapper/312:13:503
29715040,0irq/26-eth0-rx-0-21swapper/311:43:513
29715040,0irq/26-eth0-rx-0-21swapper/310:08:483
29715040,0irq/26-eth0-rx-0-21swapper/309:23:583
29715040,0irq/26-eth0-rx-0-21swapper/309:18:483
29715040,0irq/26-eth0-rx-0-21swapper/308:53:453
29715040,0irq/26-eth0-rx-0-21swapper/308:50:473
29715040,0irq/26-eth0-rx-0-21swapper/307:28:473
259940,0migration/231076-21if_eth111:28:522
259940,0migration/230857-21fschecks_count07:08:502
259940,0migration/228393-21kthreadcore09:03:532
259940,0migration/227723-21kthreadcore07:53:512
259940,0migration/224455-21missed_timers07:48:562
259940,0migration/220186-21kthreadcore07:23:552
259940,0migration/215649-21kthreadcore08:08:532
259940,0migration/213390-21kthreadcore07:18:532
249940,0watchdog/222298-21tr08:38:542
249940,0watchdog/212062-21sed08:03:542
249940,0watchdog/20-21swapper/211:23:542
249940,0watchdog/20-21swapper/210:13:502
249940,0watchdog/20-21swapper/209:48:542
179940,0migration/17761-21aten_r1power_po10:33:481
179940,0migration/15810-21kthreadcore08:48:551
179940,0migration/15576-21taskset10:50:031
179940,0migration/128473-21kthreadcore07:53:521
179940,0migration/124403-21kthreadcore11:03:541
179940,0migration/120410-21kthreadcore10:38:531
179940,0migration/119826-21kthreadcore10:58:541
179940,0migration/119259-21irqcore08:58:521
179940,0migration/119233-21ntp_offset11:38:541
179940,0migration/112603-21kthreadcore08:53:531
179940,0migration/110314-21kthreadcore08:03:541
179940,0migration/110091-21kthreadcore11:13:531
169940,0watchdog/1705-21ssh09:48:421
169940,0watchdog/12855-21kthreadcore09:28:501
169940,0watchdog/122318-21kthreadcore12:03:531
169940,0watchdog/122297-21grep08:38:541
169940,0watchdog/117868-21fschecks_count09:38:501
169940,0watchdog/117751-21munin-node07:43:541
169940,0watchdog/113500-21switchtime08:28:581
169940,0watchdog/10-21swapper/110:13:501
169940,0watchdog/10-21swapper/110:03:501
169940,0watchdog/10-21swapper/107:48:541
169940,0watchdog/10-21swapper/106:53:551
149940,0migration/05422-21munin-node10:28:580
149940,0migration/031029-21sh09:43:580
149940,0migration/017259-21kthreadcore08:08:530
149940,0migration/011245-21idleruntime06:53:520
8215030,0irq/24-0000:00:0-21swapper/206:58:442
35089933,0cyclictest20692-21perl08:13:502
35089930,0cyclictest0-21swapper/207:28:472
35089930,0cyclictest0-21swapper/207:03:472
35079932,0cyclictest3556-21lldpd08:16:581
35079932,0cyclictest3514-21snmpd08:27:231
35079932,0cyclictest26796-21awk09:23:521
35079932,0cyclictest11086-21tr11:33:561
35079930,0cyclictest24440-21awk10:43:511
35079930,0cyclictest0-21swapper/108:00:031
35069932,0cyclictest6500-21expr07:38:500
35069932,0cyclictest3798-21sensors07:08:590
35069932,0cyclictest3514-21snmpd08:28:380
35069932,0cyclictest3514-21snmpd08:24:380
35069932,0cyclictest3514-21snmpd07:06:010
35069932,0cyclictest3514-21snmpd06:48:380
35069932,0cyclictest3241-21irqbalance11:08:440
35069932,0cyclictest3241-21irqbalance10:23:440
35069932,0cyclictest3241-21irqbalance08:18:440
35069932,0cyclictest29805-21kthreadcore09:23:550
35069932,0cyclictest22272-21aten2.4-expect11:23:470
35069932,0cyclictest19992-21awk07:48:520
35069932,0cyclictest13346-21awk07:43:510
35069931,0cyclictest19374-21kthreadcore09:18:530
35069930,0cyclictest23984-21timerwakeupswit07:24:020
35069930,0cyclictest0-21swapper/008:39:410
339930,0migration/319332-21kthreadcore08:33:553
339930,0migration/315715-21latency06:53:563
29725030,0irq/27-eth0-tx-0-21swapper/207:14:002
29715030,0irq/26-eth0-rx-0-21swapper/308:33:313
29715030,0irq/26-eth0-rx-0-21swapper/308:22:523
29715030,0irq/26-eth0-rx-0-21swapper/308:13:483
29715030,0irq/26-eth0-rx-0-21swapper/307:38:473
29715030,0irq/26-eth0-rx-0-21swapper/307:33:473
29715030,0irq/26-eth0-rx-0-21swapper/307:13:493
29715030,0irq/26-eth0-rx-0-21swapper/307:12:323
179930,0migration/15241-21runrttasks07:35:171
179930,0migration/128149-21kthreadcore07:28:521
179930,0migration/114507-21diskmemload11:18:481
169930,0watchdog/10-21swapper/111:08:541
149930,0migration/012397-21sh11:57:360
35069920,0cyclictest0-21swapper/009:13:360
35069920,0cyclictest0-21swapper/008:33:360
29715020,0irq/26-eth0-rx-0-21swapper/308:23:383
29715020,0irq/26-eth0-rx-0-21swapper/308:03:483
29715020,0irq/26-eth0-rx-0-21swapper/307:49:513
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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