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2026-07-16 - 13:33

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 Thu Jul 16, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3151023621,0sleep00-21swapper/006:48:130
3130223526,0sleep20-21swapper/206:45:472
304450350,0irq/25-eth10-21swapper/306:45:063
3160123324,0sleep10-21swapper/106:49:181
317009983,0cyclictest30938-21awk08:49:511
317009973,0cyclictest8076-21awk10:49:531
317009973,0cyclictest3514-21snmpd09:48:361
317009973,0cyclictest28390-21awk11:39:531
317009973,0cyclictest25550-21awk09:24:541
317009973,0cyclictest20492-21awk07:04:541
317009972,0cyclictest29011-21awk07:59:541
317009972,0cyclictest24264-21awk08:44:521
317009972,0cyclictest22326-21awk07:54:541
317009972,0cyclictest21742-21awk10:19:531
317009970,0cyclictest10021-21hddtemp_smartct09:34:521
317009970,0cyclictest0-21swapper/112:03:381
339960,0migration/33547-21runrttasks12:01:383
339960,0migration/324585-21munin-node08:44:543
339960,0migration/323875-21sh11:15:543
339960,0migration/323563-21sh10:59:003
339960,0migration/319906-21sh11:53:473
339960,0migration/319821-21munin-node10:34:593
339960,0migration/318919-21sh11:34:433
317059966,0cyclictest0-21swapper/209:45:532
317059965,0cyclictest17129-21ps09:19:562
317059960,0cyclictest20887-21kthreadcore07:04:552
317059960,0cyclictest0-21swapper/211:54:512
317009964,0cyclictest0-21swapper/112:10:151
317009963,0cyclictest3556-21lldpd09:49:471
317009963,0cyclictest3556-21lldpd09:39:471
317009962,0cyclictest9461-21sh11:27:591
317009962,0cyclictest6559-21runrttasks12:16:131
317009962,0cyclictest4504-21awk11:44:531
317009962,0cyclictest3556-21lldpd06:50:471
317009962,0cyclictest3514-21snmpd11:32:571
317009962,0cyclictest3514-21snmpd11:02:531
317009962,0cyclictest3514-21snmpd08:38:511
317009962,0cyclictest3514-21snmpd08:17:281
317009962,0cyclictest2281-21awk07:39:541
317009962,0cyclictest16642-21awk10:54:531
317009962,0cyclictest13460-21sadc12:09:381
317009961,0cyclictest30290-21awk10:24:531
317009961,0cyclictest26781-21awk11:19:541
317009961,0cyclictest22276-21kthreadcore11:14:551
317009961,0cyclictest21114-21taskset10:37:021
317009961,0cyclictest1437-21awk07:14:541
317009961,0cyclictest13332-21awk10:14:531
317009961,0cyclictest11518-21kthreadcore11:09:551
317009961,0cyclictest11489-21missed_timers08:54:581
317009960,0cyclictest21880-21kthreadcore09:59:551
317009960,0cyclictest13909-21aten_r1power_cu07:24:491
317009960,0cyclictest0-21swapper/111:55:511
317009960,0cyclictest0-21swapper/109:29:541
317009960,0cyclictest0-21swapper/108:08:081
317009960,0cyclictest0-21swapper/107:23:371
29725060,0irq/27-eth0-tx-0-21swapper/211:19:232
29715060,0irq/26-eth0-rx-9114-21rm09:51:213
29715060,0irq/26-eth0-rx-24958-21ssh09:42:323
29715060,0irq/26-eth0-rx-23895-21awk09:04:523
259960,0migration/217967-21ntp_offset10:14:592
149960,0migration/07194-21switchtime07:40:020
149960,0migration/032588-21sh11:21:230
149960,0migration/025942-21sh11:36:560
149960,0migration/021797-21sh12:14:220
149960,0migration/018816-21sh09:59:120
149960,0migration/012015-21sh10:14:200
8215050,0irq/24-0000:00:14544-21cat07:49:342
4150,0ktimersoftd/00-21swapper/012:06:120
339950,0migration/36382-21idleruntime10:29:523
339950,0migration/3615-21munin-node06:49:553
339950,0migration/35598-21kthreadcore11:44:553
339950,0migration/34776-21kthreadcore11:24:543
339950,0migration/33012-21fschecks_time08:04:523
339950,0migration/329853-21kthreadcore09:44:553
339950,0migration/326602-21kthreadcore10:39:553
339950,0migration/326499-21kthreadcore12:14:553
339950,0migration/320988-21munin-node11:54:493
339950,0migration/320067-21sh10:18:293
339950,0migration/320029-21taskset07:26:483
339950,0migration/317686-21kthreadcore08:59:553
339950,0migration/316918-21idleruntime09:19:543
339950,0migration/313048-21taskset08:56:583
339950,0migration/312840-21munin-node10:50:003
339950,0migration/312609-21kthreadcore07:44:573
339950,0migration/31240-21munin-node11:40:053
339950,0migration/312205-21kthreadcore11:29:543
317059955,0cyclictest29831-21diskmemload12:05:062
317059955,0cyclictest0-21swapper/211:43:592
317059955,0cyclictest0-21swapper/209:11:412
317059955,0cyclictest0-21swapper/209:05:222
317059955,0cyclictest0-21swapper/207:49:512
317059950,0cyclictest0-21swapper/210:57:002
317059950,0cyclictest0-21swapper/207:34:532
317009952,0cyclictest3556-21lldpd07:53:471
317009951,0cyclictest7998-21cat06:54:551
317009951,0cyclictest5239-21tr08:29:541
317009951,0cyclictest32405-21awk09:09:531
317009951,0cyclictest31039-21sh10:44:431
317009951,0cyclictest29465-21df_abs08:24:511
317009951,0cyclictest29157-21kthreadcore10:04:551
317009951,0cyclictest28405-21irqrtprio07:34:571
317009951,0cyclictest23995-21if_eth1.209:04:531
317009951,0cyclictest23281-21kthreadcore07:29:541
317009951,0cyclictest22340-21wc08:19:391
317009951,0cyclictest14746-21kthreadcore09:54:551
317009951,0cyclictest13801-21awk06:59:561
317009951,0cyclictest12284-21cpu11:49:511
317009951,0cyclictest10793-21kthreadcore08:09:551
317009951,0cyclictest0-21swapper/111:34:541
317009951,0cyclictest0-21swapper/110:29:511
317009951,0cyclictest0-21swapper/109:19:571
317009951,0cyclictest0-21swapper/109:14:391
317009951,0cyclictest0-21swapper/108:59:411
317009951,0cyclictest0-21swapper/108:39:521
317009950,0cyclictest9072-21munin-node07:44:551
317009950,0cyclictest26327-21aten_r1power_po07:09:491
317009950,0cyclictest0-21swapper/111:04:541
317009950,0cyclictest0-21swapper/110:39:531
317009950,0cyclictest0-21swapper/110:09:511
316999950,0cyclictest0-21swapper/009:37:040
29725050,0irq/27-eth0-tx-9073-21cpuspeed_turbos11:09:502
29725050,0irq/27-eth0-tx-6017-21munin-node08:54:552
29725050,0irq/27-eth0-tx-2842-21ssh12:00:072
29725050,0irq/27-eth0-tx-20884-21munin-node10:19:512
29725050,0irq/27-eth0-tx-16762-21munin-node08:39:510
29725050,0irq/27-eth0-tx-13687-21ssh10:34:222
29725050,0irq/27-eth0-tx-10487-21ssh10:10:502
29725050,0irq/27-eth0-tx-0-21swapper/211:46:172
29725050,0irq/27-eth0-tx-0-21swapper/008:21:160
29725050,0irq/27-eth0-tx-0-21swapper/007:44:580
29725050,0irq/27-eth0-tx-0-21swapper/006:49:550
29715050,0irq/26-eth0-rx-4988-21ssh08:52:583
29715050,0irq/26-eth0-rx-4469-21sensors10:44:583
29715050,0irq/26-eth0-rx-25820-21munin-node11:19:593
29715050,0irq/26-eth0-rx-18142-21tr12:09:553
29715050,0irq/26-eth0-rx-0-21swapper/312:05:463
29715050,0irq/26-eth0-rx-0-21swapper/311:09:413
29715050,0irq/26-eth0-rx-0-21swapper/311:07:043
29715050,0irq/26-eth0-rx-0-21swapper/310:59:553
29715050,0irq/26-eth0-rx-0-21swapper/310:19:563
29715050,0irq/26-eth0-rx-0-21swapper/310:04:503
29715050,0irq/26-eth0-rx-0-21swapper/310:01:213
29715050,0irq/26-eth0-rx-0-21swapper/309:57:073
29715050,0irq/26-eth0-rx-0-21swapper/309:37:013
29715050,0irq/26-eth0-rx-0-21swapper/309:24:563
29715050,0irq/26-eth0-rx-0-21swapper/309:18:453
29715050,0irq/26-eth0-rx-0-21swapper/309:09:493
29715050,0irq/26-eth0-rx-0-21swapper/308:39:593
27150,0ktimersoftd/20-21swapper/211:03:372
259950,0migration/24512-21kthreadcore09:49:572
259950,0migration/226086-21sh11:37:162
249950,0watchdog/226746-21taskset07:32:332
149950,0migration/07862-21cpuspeed_turbos09:14:510
149950,0migration/07372-21kthreadcore08:29:550
149950,0migration/06368-21unixbench-2d11:05:020
149950,0migration/032614-21taskset07:14:120
149950,0migration/032425-21latency07:34:590
149950,0migration/030258-21sh12:19:200
149950,0migration/030229-21irqcore11:59:520
149950,0migration/029181-21irqcore07:59:560
149950,0migration/026540-21timerwakeupswit11:55:000
149950,0migration/026419-21kthreadcore07:54:570
149950,0migration/025295-21gltestperf09:24:520
149950,0migration/025287-21switchtime07:05:020
149950,0migration/023374-21latency_hist08:44:390
149950,0migration/021353-21fschecks_count10:19:510
149950,0migration/02094-21munin-node08:24:570
149950,0migration/020802-21kthreadcore09:59:550
149950,0migration/020119-21taskset10:18:360
149950,0migration/019936-21kthreadcore07:49:560
149950,0migration/019107-21sh11:51:590
149950,0migration/017672-21kthreadcore10:34:550
149950,0migration/015848-21switchtime08:35:030
149950,0migration/01584-21kthreadcore10:44:540
149950,0migration/015816-21sh11:11:590
149950,0migration/015806-21aten_r1power_po10:54:490
149950,0migration/013345-21kthreadcore08:09:560
149950,0migration/010949-21kthreadcore10:49:560
8215040,0irq/24-0000:00:22134-21cat12:14:382
8215040,0irq/24-0000:00:1794-21cat11:24:382
4140,0ktimersoftd/00-21swapper/009:29:400
339940,0migration/331426-21kthreadcore07:59:573
339940,0migration/327282-21irqcore07:09:543
339940,0migration/32541-21irqcore07:39:563
339940,0migration/322558-21sh08:19:513
339940,0migration/320238-21fschecks_time07:04:523
339940,0migration/316424-21taskset08:38:363
339940,0migration/313410-21taskset07:21:543
339940,0migration/312783-21kthreadcore08:09:563
317059944,0cyclictest0-21swapper/208:49:552
317059943,0cyclictest8132-21awk10:49:542
317059943,0cyclictest3556-21lldpd08:09:462
317059943,0cyclictest3556-21lldpd07:03:172
317059943,0cyclictest3514-21snmpd08:47:062
317059943,0cyclictest3303-21awk08:04:532
317059943,0cyclictest29083-21awk07:59:552
317059943,0cyclictest14763-21cut10:34:512
316999944,0cyclictest0-21swapper/009:42:170
316999943,0cyclictest3556-21lldpd11:47:490
316999943,0cyclictest3514-21snmpd11:44:210
316999943,0cyclictest3514-21snmpd10:06:210
316999943,0cyclictest3514-21snmpd09:46:060
316999943,0cyclictest31191-21sadc09:09:390
316999943,0cyclictest30306-21awk10:24:530
316999943,0cyclictest25032-21awk10:59:520
316999943,0cyclictest21366-21awk07:29:510
316999943,0cyclictest17691-21kthreadcore06:59:590
29725040,0irq/27-eth0-tx-7623-21munin-node09:14:512
29725040,0irq/27-eth0-tx-5450-21tr09:29:552
29725040,0irq/27-eth0-tx-22972-21ssh10:39:502
29725040,0irq/27-eth0-tx-19657-21df_abs09:59:512
29725040,0irq/27-eth0-tx-16055-21cut08:59:552
29725040,0irq/27-eth0-tx-11053-21cpu09:54:492
29725040,0irq/27-eth0-tx-0-21swapper/212:09:422
29725040,0irq/27-eth0-tx-0-21swapper/211:30:282
29725040,0irq/27-eth0-tx-0-21swapper/211:21:232
29725040,0irq/27-eth0-tx-0-21swapper/211:06:262
29725040,0irq/27-eth0-tx-0-21swapper/210:24:502
29725040,0irq/27-eth0-tx-0-21swapper/210:04:432
29725040,0irq/27-eth0-tx-0-21swapper/209:39:502
29725040,0irq/27-eth0-tx-0-21swapper/209:34:492
29725040,0irq/27-eth0-tx-0-21swapper/209:24:512
29725040,0irq/27-eth0-tx-0-21swapper/008:49:450
29725040,0irq/27-eth0-tx-0-21swapper/007:26:470
29715040,0irq/26-eth0-rx-0-21swapper/310:24:553
29715040,0irq/26-eth0-rx-0-21swapper/310:09:513
29715040,0irq/26-eth0-rx-0-21swapper/309:29:553
29715040,0irq/26-eth0-rx-0-21swapper/307:34:533
259940,0migration/28030-21idleruntime07:19:532
259940,0migration/25964-21runrttasks06:54:132
259940,0migration/24683-21kthreadcore07:39:572
259940,0migration/23713-21kthreadcore07:14:552
259940,0migration/232596-21runrttasks07:13:582
259940,0migration/22294-21kthreadcore10:44:542
259940,0migration/212054-21timerandwakeup06:55:012
259940,0migration/210428-21df08:34:512
249940,0watchdog/221063-21mdstat08:14:572
249940,0watchdog/20-21swapper/211:49:522
249940,0watchdog/20-21swapper/208:19:572
149940,0migration/08560-21kthreadcore08:54:560
149940,0migration/08389-21kthreadcore10:29:550
149940,0migration/07139-21kthreadcore11:24:540
149940,0migration/05738-21kthreadcore08:04:560
149940,0migration/04267-21kthreadcore09:49:570
149940,0migration/016390-21cpuspeed_turbos09:19:520
149940,0migration/014001-21kthreadcore11:29:540
149940,0migration/010872-21kthreadcore07:19:560
8215030,0irq/24-0000:00:0-21swapper/208:40:042
317059932,0cyclictest3556-21lldpd07:24:472
317059932,0cyclictest29987-21awk08:24:532
317059930,0cyclictest21990-21tune2fs07:54:532
316999933,0cyclictest14295-21kworker/0:011:14:400
316999933,0cyclictest14295-21kworker/0:009:09:400
316999933,0cyclictest14295-21kworker/0:008:59:440
316999933,0cyclictest14295-21kworker/0:008:14:400
316999933,0cyclictest14295-21kworker/0:007:14:400
316999933,0cyclictest14295-21kworker/0:006:54:450
29715030,0irq/26-eth0-rx-0-21swapper/308:29:493
29715030,0irq/26-eth0-rx-0-21swapper/308:26:243
29715030,0irq/26-eth0-rx-0-21swapper/307:54:523
29715030,0irq/26-eth0-rx-0-21swapper/307:49:493
29715030,0irq/26-eth0-rx-0-21swapper/307:29:593
29715030,0irq/26-eth0-rx-0-21swapper/307:14:573
29715030,0irq/26-eth0-rx-0-21swapper/307:03:483
29715030,0irq/26-eth0-rx-0-21swapper/306:54:563
259930,0migration/23980-21fschecks_time08:29:512
149930,0migration/022552-21sh10:39:480
29715020,0irq/26-eth0-rx-0-21swapper/308:14:423
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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