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2026-09-14 - 18:58

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 Sep 14, 2026 12:43:22)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2941223625,0sleep30-21swapper/306:43:483
2939923424,0sleep10-21swapper/106:43:381
2919423322,0sleep00-21swapper/006:41:130
2932022824,0sleep20-21swapper/206:42:432
339960,0migration/38198-21switchtime09:49:173
339960,0migration/38035-21sh10:52:483
339960,0migration/37111-21sh10:29:173
339960,0migration/318862-21sh09:17:563
339960,0migration/315095-21sh10:54:563
29715060,0irq/26-eth0-rx-8222-21df08:29:073
29715060,0irq/26-eth0-rx-6559-21runrttasks12:10:463
29715060,0irq/26-eth0-rx-5772-21yum11:29:203
29715060,0irq/26-eth0-rx-31056-21munin-node10:44:163
29715060,0irq/26-eth0-rx-12688-21irqcore08:54:123
294939966,0cyclictest0-21swapper/207:44:142
294929960,0cyclictest0-21swapper/111:14:201
149960,0migration/031605-21munin-node10:04:120
149960,0migration/03020-21kthreadcore10:29:120
149960,0migration/02487-21kthreadcore07:59:130
149960,0migration/018425-21aten_r1power_vo09:59:070
149960,0migration/015625-21sh11:18:150
339950,0migration/39239-21kthreadcore11:54:113
339950,0migration/36949-21kthreadcore08:49:123
339950,0migration/36067-21kthreadcore06:49:133
339950,0migration/34191-21munin-node07:09:213
339950,0migration/328797-21kthreadcore07:29:133
339950,0migration/328630-21munin-node09:04:103
339950,0migration/327440-21kthreadcore10:24:103
339950,0migration/324496-21latency_hist11:03:563
339950,0migration/323613-21mdstat07:24:143
339950,0migration/320946-21taskset08:38:093
339950,0migration/318257-21kthreadcore10:59:113
339950,0migration/31260-21irqcore11:09:133
339950,0migration/312596-21kthreadcore10:34:133
339950,0migration/311807-21kthreadcore10:14:113
29725050,0irq/27-eth0-tx-7974-21df_abs11:34:072
29725050,0irq/27-eth0-tx-7845-21ssh10:09:212
29725050,0irq/27-eth0-tx-6404-21ssh11:09:252
29725050,0irq/27-eth0-tx-5265-21kthreadcore09:29:142
29725050,0irq/27-eth0-tx-31718-21latency_hist11:28:552
29725050,0irq/27-eth0-tx-26094-21ssh08:59:562
29725050,0irq/27-eth0-tx-23662-21aten2.4-expect11:44:052
29725050,0irq/27-eth0-tx-16807-21aten2.4-expect10:59:062
29725050,0irq/27-eth0-tx-10708-21munin-node06:54:140
29725050,0irq/27-eth0-tx-0-21swapper/211:06:052
29725050,0irq/27-eth0-tx-0-21swapper/209:03:562
29725050,0irq/27-eth0-tx-0-21swapper/007:16:310
29715050,0irq/26-eth0-rx-8169-21kthreadcore09:09:143
29715050,0irq/26-eth0-rx-4979-21munin-node07:14:143
29715050,0irq/26-eth0-rx-29065-21nfs_client11:44:123
29715050,0irq/26-eth0-rx-28193-21wc09:24:093
29715050,0irq/26-eth0-rx-25284-21ssh10:02:033
29715050,0irq/26-eth0-rx-23926-21if_eth112:04:093
29715050,0irq/26-eth0-rx-15705-21fschecks_time11:59:083
29715050,0irq/26-eth0-rx-0-21swapper/311:23:553
29715050,0irq/26-eth0-rx-0-21swapper/310:39:123
29715050,0irq/26-eth0-rx-0-21swapper/310:39:123
29715050,0irq/26-eth0-rx-0-21swapper/310:07:523
29715050,0irq/26-eth0-rx-0-21swapper/309:44:113
29715050,0irq/26-eth0-rx-0-21swapper/309:43:063
29715050,0irq/26-eth0-rx-0-21swapper/309:19:193
29715050,0irq/26-eth0-rx-0-21swapper/308:59:233
29715050,0irq/26-eth0-rx-0-21swapper/308:44:123
294939955,0cyclictest0-21swapper/207:09:142
294939954,0cyclictest3556-21lldpd10:25:262
294939950,0cyclictest27659-21diskmemload10:21:252
294919955,0cyclictest0-21swapper/010:09:310
294919950,0cyclictest0-21swapper/010:26:420
27150,0ktimersoftd/20-21swapper/209:16:372
259950,0migration/28852-21sh09:50:172
259950,0migration/231347-21needreboot07:54:142
259950,0migration/228308-21kthreadcore09:44:112
259950,0migration/215118-21sh11:16:442
259950,0migration/211578-21kthreadcore11:54:122
249950,0watchdog/221661-21unixbench_singl11:39:172
249950,0watchdog/220669-21chrt08:34:582
19150,0ktimersoftd/10-21swapper/111:55:561
179950,0migration/14447-21if_eth108:49:101
179950,0migration/14250-21cpuspeed_turbos06:49:091
179950,0migration/14150-21kthreadcore07:34:141
179950,0migration/129268-21sh12:04:421
179950,0migration/126611-21munin-node10:04:071
179950,0migration/124601-21rt-features09:39:171
179950,0migration/123677-21kthreadcore08:39:131
179950,0migration/112610-21latency_hist07:43:561
169950,0watchdog/121659-21grep11:39:171
149950,0migration/09491-21ntp_kernel_pll_06:49:160
149950,0migration/09410-21munin-node10:34:070
149950,0migration/09088-21sh09:51:010
149950,0migration/07152-21sh11:33:250
149950,0migration/06465-21sh11:09:370
149950,0migration/04432-21taskset07:10:280
149950,0migration/031633-21munin-node07:54:170
149950,0migration/030476-21sh06:44:100
149950,0migration/026205-21sh09:00:110
149950,0migration/025690-21taskset07:53:350
149950,0migration/025645-21kthreadcore11:44:100
149950,0migration/022495-21kthreadcore08:14:110
149950,0migration/02173-21sh09:05:490
149950,0migration/021559-21cpuspeed_turbos08:39:080
149950,0migration/020963-21munin-node11:39:120
149950,0migration/019713-21kthreadcore11:59:120
149950,0migration/019277-21kthreadcore08:34:130
149950,0migration/017685-21munin-node06:59:090
149950,0migration/016816-21munin-node10:59:060
149950,0migration/01565-21kthreadcore12:09:120
149950,0migration/014987-21kthreadcore07:44:130
149950,0migration/012408-21ntp_offset08:04:150
149950,0migration/012260-21kthreadcore08:29:120
339940,0migration/39182-21kthreadcore08:04:133
339940,0migration/36345-21runrttasks08:00:073
339940,0migration/35642-21kthreadcore09:29:143
29725040,0irq/27-eth0-tx-9729-21ssh10:13:592
29725040,0irq/27-eth0-tx-9232-21ssh10:34:012
29725040,0irq/27-eth0-tx-3591-21ssh09:09:072
29725040,0irq/27-eth0-tx-11248-21tr09:34:062
29725040,0irq/27-eth0-tx-0-21swapper/211:23:572
29725040,0irq/27-eth0-tx-0-21swapper/210:50:052
29725040,0irq/27-eth0-tx-0-21swapper/210:39:082
29725040,0irq/27-eth0-tx-0-21swapper/210:39:082
29725040,0irq/27-eth0-tx-0-21swapper/209:54:122
29725040,0irq/27-eth0-tx-0-21swapper/209:24:232
29725040,0irq/27-eth0-tx-0-21swapper/208:53:592
29725040,0irq/27-eth0-tx-0-21swapper/208:49:152
29725040,0irq/27-eth0-tx-0-21swapper/008:21:420
29725040,0irq/27-eth0-tx-0-21swapper/007:29:150
29715040,0irq/26-eth0-rx-6662-21iperf10:20:203
29715040,0irq/26-eth0-rx-32194-21perl11:49:093
29715040,0irq/26-eth0-rx-24432-21kthreadcore08:14:123
29715040,0irq/26-eth0-rx-13676-21strings11:14:143
29715040,0irq/26-eth0-rx-0-21swapper/311:39:083
29715040,0irq/26-eth0-rx-0-21swapper/311:34:063
29715040,0irq/26-eth0-rx-0-21swapper/311:19:243
29715040,0irq/26-eth0-rx-0-21swapper/310:09:293
29715040,0irq/26-eth0-rx-0-21swapper/309:55:073
29715040,0irq/26-eth0-rx-0-21swapper/309:35:003
29715040,0irq/26-eth0-rx-0-21swapper/307:54:073
29715040,0irq/26-eth0-rx-0-21swapper/307:39:153
29715040,0irq/26-eth0-rx-0-21swapper/306:59:143
29715040,0irq/26-eth0-rx-0-21swapper/306:45:333
294939944,0cyclictest0-21swapper/210:04:052
294939943,0cyclictest6881-21awk07:39:112
294939943,0cyclictest3556-21lldpd08:44:242
294939943,0cyclictest3556-21lldpd08:29:252
294939943,0cyclictest3556-21lldpd08:12:252
294939943,0cyclictest3556-21lldpd06:55:242
294939943,0cyclictest3556-21lldpd06:47:542
294939943,0cyclictest32447-21awk07:34:102
294939943,0cyclictest27762-21awk08:19:092
294939943,0cyclictest25526-21cat08:14:122
294939943,0cyclictest23852-21awk12:04:082
294939943,0cyclictest22160-21awk08:39:112
294939943,0cyclictest2146-21awk10:29:102
294939943,0cyclictest1983-21awk08:24:092
294939943,0cyclictest18240-21awk06:59:112
294939943,0cyclictest17007-21awk11:19:092
294939942,0cyclictest20193-21awk07:49:122
294939940,0cyclictest0-21swapper/207:20:072
294929944,0cyclictest0-21swapper/107:53:571
294929943,0cyclictest6921-21awk07:39:111
294929943,0cyclictest3556-21lldpd11:59:561
294929943,0cyclictest3556-21lldpd11:48:561
294929943,0cyclictest3556-21lldpd11:37:271
294929943,0cyclictest3556-21lldpd11:23:561
294929943,0cyclictest3514-21snmpd11:19:071
294929943,0cyclictest3514-21snmpd10:44:071
294929943,0cyclictest3514-21snmpd08:44:071
294929943,0cyclictest3241-21irqbalance11:29:041
294929943,0cyclictest3241-21irqbalance11:13:141
294929943,0cyclictest3241-21irqbalance09:55:041
294929943,0cyclictest3241-21irqbalance09:47:341
294929943,0cyclictest3241-21irqbalance09:34:141
294929943,0cyclictest3241-21irqbalance09:04:041
294929943,0cyclictest3241-21irqbalance08:34:141
294929943,0cyclictest3241-21irqbalance06:54:151
294929943,0cyclictest3241-21irqbalance06:44:151
294929943,0cyclictest31865-21awk12:09:101
294929943,0cyclictest24402-21awk11:44:081
294929940,0cyclictest0-21swapper/110:34:261
294929940,0cyclictest0-21swapper/109:16:141
294919944,0cyclictest0-21swapper/011:35:360
294919944,0cyclictest0-21swapper/010:50:120
294919944,0cyclictest0-21swapper/009:34:030
294919944,0cyclictest0-21swapper/009:20:200
294919944,0cyclictest0-21swapper/009:11:210
294919944,0cyclictest0-21swapper/008:55:350
294919944,0cyclictest0-21swapper/008:51:380
294919943,0cyclictest5977-21munin-node07:39:100
294919943,0cyclictest3514-21snmpd11:51:520
294919943,0cyclictest3514-21snmpd11:20:220
294919943,0cyclictest28823-21awk08:44:110
294919943,0cyclictest24839-21awk07:04:090
294919943,0cyclictest19170-21awk07:24:110
294919943,0cyclictest12574-21awk07:19:100
294919943,0cyclictest11285-21awk09:54:100
259940,0migration/28703-21sh10:54:062
259940,0migration/26072-21kthreadcore06:49:132
259940,0migration/226908-21kthreadcore10:44:112
259940,0migration/220911-21kthreadcore09:59:122
259940,0migration/220767-21kernelversion09:19:112
259940,0migration/220652-21kthreadcore09:39:132
259940,0migration/22043-21kthreadcore12:09:122
259940,0migration/220309-21kthreadcore07:24:132
259940,0migration/215123-21aten_r1power_fr11:59:062
259940,0migration/211528-21kthreadcore08:04:132
249940,0watchdog/24216-21cut11:49:132
249940,0watchdog/230667-21switchtime07:29:182
249940,0watchdog/210312-21memory07:14:142
179940,0migration/14362-21kthreadcore10:09:151
179940,0migration/13736-21hddtemp_smartct09:29:101
179940,0migration/132124-21kthreadcore07:09:141
179940,0migration/128123-21gltestperf09:24:081
179940,0migration/125750-21aten_r1power_po10:24:051
179940,0migration/124268-21cpuspeed_turbos07:04:071
179940,0migration/122894-21kthreadcore07:24:141
179940,0migration/119995-21kthreadcore09:59:121
179940,0migration/119804-21kthreadcore10:19:111
179940,0migration/119142-21taskset08:58:131
179940,0migration/117602-21kthreadcore08:09:141
179940,0migration/115216-21taskset10:55:181
169940,0watchdog/18114-21ssh10:31:181
169940,0watchdog/125464-21if_err_eth111:04:101
169940,0watchdog/124273-21ssh10:42:021
169940,0watchdog/124273-21ssh10:42:021
169940,0watchdog/12287-21ssh09:48:581
169940,0watchdog/10-21swapper/110:49:141
169940,0watchdog/10-21swapper/108:59:061
169940,0watchdog/10-21swapper/108:29:061
149940,0migration/05172-21kthreadcore08:24:120
149940,0migration/025388-21kthreadcore12:04:110
149940,0migration/020927-21kthreadcore10:39:120
149940,0migration/020927-21kthreadcore10:39:120
149940,0migration/01984-21runrttasks09:27:040
149940,0migration/019395-21kthreadcore10:19:110
29715030,0irq/26-eth0-rx-0-21swapper/308:39:083
29715030,0irq/26-eth0-rx-0-21swapper/308:24:063
29715030,0irq/26-eth0-rx-0-21swapper/308:19:083
29715030,0irq/26-eth0-rx-0-21swapper/307:49:023
29715030,0irq/26-eth0-rx-0-21swapper/307:44:073
29715030,0irq/26-eth0-rx-0-21swapper/307:34:083
29715030,0irq/26-eth0-rx-0-21swapper/306:54:083
294939932,0cyclictest24893-21awk07:04:102
294939932,0cyclictest1186-21awk07:59:122
294929932,0cyclictest3241-21irqbalance09:09:041
294929932,0cyclictest3241-21irqbalance08:24:141
294929932,0cyclictest27880-21awk08:19:101
294929932,0cyclictest25228-21sensors09:19:161
294929932,0cyclictest21175-21awk08:14:091
294929932,0cyclictest20217-21awk07:49:121
294929932,0cyclictest18559-21cut06:59:121
294919933,0cyclictest25220-21kworker/0:211:54:110
294919933,0cyclictest0-21swapper/009:17:480
294919932,0cyclictest9187-21expr10:54:080
294919932,0cyclictest28091-21irqstats09:44:100
294919932,0cyclictest27719-21tr10:44:110
294919932,0cyclictest26212-21grep11:04:120
294919932,0cyclictest10717-21cat10:14:100
294919932,0cyclictest10003-21ssh09:31:570
294919930,0cyclictest25940-21sh09:42:090
294919930,0cyclictest0-21swapper/008:09:100
179930,0migration/13827-21kthreadcore07:59:131
169930,0watchdog/10-21swapper/110:58:581
169930,0watchdog/10-21swapper/110:14:141
169930,0watchdog/10-21swapper/107:20:061
169930,0watchdog/10-21swapper/107:14:141
149930,0migration/031637-21sh07:34:070
29715020,0irq/26-eth0-rx-0-21swapper/308:09:093
29715020,0irq/26-eth0-rx-0-21swapper/307:19:003
29715020,0irq/26-eth0-rx-0-21swapper/307:04:063
294929921,0cyclictest25133-21aten_r1power_vo07:29:081
294919920,0cyclictest0-21swapper/011:23:570
169920,0watchdog/10-21swapper/108:03:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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