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2026-08-11 - 16:02
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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 the highest latencies:
System rack1slot2.osadl.org (updated Tue Aug 11, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
423827271,0sleep10-21swapper/107:27:551
408526462,0sleep20-21swapper/207:26:122
413925753,0sleep00-21swapper/007:26:460
422524433,0sleep30-21swapper/307:27:453
4483993737,0cyclictest1981-21md1_resync09:22:081
44859999,0cyclictest83050irq/26-0000:00:11:44:552
44829999,0cyclictest12471-21awk09:25:120
8305060,0irq/26-0000:00:8693-21cut07:30:143
8305060,0irq/26-0000:00:7463-21df09:00:093
8305060,0irq/26-0000:00:32688-21ntp_states07:45:183
8305060,0irq/26-0000:00:16472-21python08:40:203
8305060,0irq/26-0000:00:15644-21iostat_ios09:05:133
44859966,0cyclictest0-21swapper/209:15:162
44859960,0cyclictest0-21swapper/211:29:162
44859960,0cyclictest0-21swapper/210:22:352
44829960,0cyclictest0-21swapper/008:55:090
339960,0migration/327356-21kthreadcore08:05:163
339960,0migration/327356-21kthreadcore08:05:163
339960,0migration/326946-21kthreadcore11:45:173
339960,0migration/322413-21kthreadcore07:40:143
329960,0watchdog/34558-21perl12:30:123
29805060,0irq/28-eth0-rx-9707-21iostat11:55:143
29805060,0irq/28-eth0-rx-22950-21sh09:10:133
27160,0ktimersoftd/20-21swapper/209:34:392
169960,0watchdog/111981-21pmu-power08:15:201
149960,0migration/05117-21munin-node11:15:110
149960,0migration/032054-21sh10:32:160
149960,0migration/032044-21kthreadcore08:30:150
149960,0migration/020865-21kthreadcore10:25:130
149960,0migration/017823-21kthreadcore08:00:110
149960,0migration/011531-21sh09:43:540
8305050,0irq/26-0000:00:32587-21kthreadcore09:15:163
8305050,0irq/26-0000:00:3062-21irqstats07:50:143
8305050,0irq/26-0000:00:22203-21sed08:00:133
8305050,0irq/26-0000:00:14117-21smartctl08:20:113
8305050,0irq/26-0000:00:12302-21tr07:35:093
8305050,0irq/26-0000:00:10298-21uname09:20:193
8305050,0irq/26-0000:00:0-21swapper/309:29:573
8305050,0irq/26-0000:00:0-21swapper/308:38:253
44859955,0cyclictest18354-21diskmemload12:09:002
44859955,0cyclictest0-21swapper/211:37:192
44859955,0cyclictest0-21swapper/209:49:572
44859955,0cyclictest0-21swapper/208:29:042
44859950,0cyclictest0-21swapper/212:28:522
44839955,0cyclictest0-21swapper/108:54:031
44839954,0cyclictest7442-21grep10:00:121
44839954,0cyclictest3524-21snmpd09:16:081
44829955,0cyclictest0-21swapper/012:10:100
44829955,0cyclictest0-21swapper/009:31:240
44829950,0cyclictest0-21swapper/011:04:250
44829950,0cyclictest0-21swapper/010:40:090
44829950,0cyclictest0-21swapper/009:46:420
339950,0migration/3726-21kthreadcore08:10:153
339950,0migration/332314-21fschecks_time10:15:123
339950,0migration/33105-21kthreadcore10:35:153
339950,0migration/328872-21munin-node12:25:183
339950,0migration/328499-21fschecks_time08:30:113
339950,0migration/327417-21kthreadcore08:50:143
339950,0migration/326150-21fschecks_count12:05:123
339950,0migration/325718-21sh10:30:103
339950,0migration/322930-21latency12:00:163
339950,0migration/322260-21irqcore09:50:143
339950,0migration/318964-21kthreadcore10:05:183
339950,0migration/316817-21kthreadcore09:25:153
339950,0migration/316167-21kthreadcore12:15:193
339950,0migration/314559-21kthreadcore07:55:153
339950,0migration/311610-21cpuspeed_turbos11:00:103
339950,0migration/311425-21munin-node11:15:243
329950,0watchdog/36335-21perl12:50:133
329950,0watchdog/325685-21kthreadcore11:25:163
329950,0watchdog/319512-21fschecks_time12:20:123
329950,0watchdog/318354-21diskmemload10:25:203
329950,0watchdog/30-21swapper/309:43:363
29815050,0irq/29-eth0-tx-9888-21ssh12:14:362
29815050,0irq/29-eth0-tx-5587-21munin-node12:50:192
29815050,0irq/29-eth0-tx-26573-21munin-node10:50:182
29815050,0irq/29-eth0-tx-23515-21munin-node08:05:150
29815050,0irq/29-eth0-tx-23515-21munin-node08:05:150
29815050,0irq/29-eth0-tx-19576-21chrt12:37:042
29815050,0irq/29-eth0-tx-18795-21ssh12:19:592
29815050,0irq/29-eth0-tx-12038-21munin-node07:35:130
29815050,0irq/29-eth0-tx-0-21swapper/211:30:172
29815050,0irq/29-eth0-tx-0-21swapper/210:10:102
29815050,0irq/29-eth0-tx-0-21swapper/209:56:402
29815050,0irq/29-eth0-tx-0-21swapper/009:05:180
29815050,0irq/29-eth0-tx-0-21swapper/008:11:590
29815050,0irq/29-eth0-tx-0-21swapper/007:30:080
29805050,0irq/28-eth0-rx-7049-21iostat10:00:113
29805050,0irq/28-eth0-rx-5306-21ssh11:32:033
29805050,0irq/28-eth0-rx-3864-21ssh12:45:473
29805050,0irq/28-eth0-rx-19576-21python11:20:213
29805050,0irq/28-eth0-rx-15834-21fschecks_time11:40:103
29805050,0irq/28-eth0-rx-1126-21cut11:10:173
29805050,0irq/28-eth0-rx-0-21swapper/312:55:163
29805050,0irq/28-eth0-rx-0-21swapper/312:43:183
29805050,0irq/28-eth0-rx-0-21swapper/312:35:103
29805050,0irq/28-eth0-rx-0-21swapper/312:11:253
29805050,0irq/28-eth0-rx-0-21swapper/311:50:173
29805050,0irq/28-eth0-rx-0-21swapper/311:06:133
29805050,0irq/28-eth0-rx-0-21swapper/310:50:133
29805050,0irq/28-eth0-rx-0-21swapper/310:45:153
29805050,0irq/28-eth0-rx-0-21swapper/309:47:293
29805050,0irq/28-eth0-rx-0-21swapper/309:36:033
259950,0migration/29800-21gltestperf07:55:102
259950,0migration/25116-21munin-node09:20:132
259950,0migration/225483-21taskset10:47:342
259950,0migration/221124-21sh12:56:142
259950,0migration/216141-21kthreadcore10:05:172
259950,0migration/210810-21sh09:41:542
249950,0watchdog/223420-21munin-node08:45:202
249950,0watchdog/216948-21tune2fs10:25:082
19150,0ktimersoftd/10-21swapper/109:34:391
179950,0migration/17452-21latency_hist10:19:571
179950,0migration/115254-21sh10:22:571
149950,0migration/09762-21fschecks_time07:55:100
149950,0migration/07358-21kthreadcore07:50:160
149950,0migration/07351-21kthreadcore09:20:160
149950,0migration/06808-21hwlatdetect08:15:130
149950,0migration/0441-21sendmail_mailst10:50:200
149950,0migration/04093-21sh09:55:400
149950,0migration/04028-21iostat10:55:150
149950,0migration/032610-21kthreadcore11:30:150
149950,0migration/031711-21kthreadcore09:15:150
149950,0migration/029487-21aten_r1power_po12:45:100
149950,0migration/029260-21kthreadcore12:25:190
149950,0migration/028709-21kthreadcore08:50:150
149950,0migration/028708-21cpuspeed_turbos11:10:110
149950,0migration/028493-21kthreadcore11:45:170
149950,0migration/028220-21sh09:51:480
149950,0migration/027384-21sh11:07:370
149950,0migration/026480-21sh12:22:570
149950,0migration/022823-21latency_hist10:09:570
149950,0migration/022661-21fschecks_time11:25:120
149950,0migration/018440-21sh08:45:140
149950,0migration/018263-21munin-node12:35:180
149950,0migration/017380-21kthreadcore10:05:170
149950,0migration/015867-21sh11:57:250
149950,0migration/015756-21kthreadcore08:20:150
149950,0migration/011615-21missed_timers12:50:190
149950,0migration/011591-21kthreadcore11:35:160
149950,0migration/010395-21kthreadcore10:20:170
8305040,0irq/26-0000:00:8450-21kthreadcore08:15:163
8305040,0irq/26-0000:00:0-21swapper/308:45:193
8305040,0irq/26-0000:00:0-21swapper/212:14:582
44859944,0cyclictest0-21swapper/207:46:022
44859943,0cyclictest802-21awk08:55:132
44859943,0cyclictest3524-21snmpd12:30:252
44859943,0cyclictest3524-21snmpd09:09:232
44859943,0cyclictest2045-21awk10:35:142
44859943,0cyclictest20370-21awk07:40:122
44859940,0cyclictest11375-21munin-node11:00:112
44839943,0cyclictest8290-21awk09:00:121
44839943,0cyclictest4765-21awk12:30:141
44839943,0cyclictest3571-21lldpd12:50:161
44839943,0cyclictest3571-21lldpd12:11:451
44839943,0cyclictest3571-21lldpd12:00:451
44839943,0cyclictest3571-21lldpd11:09:451
44839943,0cyclictest3571-21lldpd11:00:151
44839943,0cyclictest3571-21lldpd10:40:451
44839943,0cyclictest3571-21lldpd10:10:451
44839943,0cyclictest3571-21lldpd09:45:451
44839943,0cyclictest3571-21lldpd09:25:451
44839943,0cyclictest3571-21lldpd09:09:151
44839943,0cyclictest3571-21lldpd08:10:131
44839943,0cyclictest3571-21lldpd07:45:131
44839943,0cyclictest3524-21snmpd12:39:101
44839943,0cyclictest3524-21snmpd12:27:101
44839943,0cyclictest3524-21snmpd09:36:381
44839943,0cyclictest3250-21irqbalance11:55:041
44839943,0cyclictest3250-21irqbalance07:42:031
44839943,0cyclictest3250-21irqbalance07:35:031
44839943,0cyclictest3250-21irqbalance07:30:231
44839943,0cyclictest26629-21awk12:05:141
44839943,0cyclictest16231-21awk11:40:121
44839943,0cyclictest15474-21awk10:05:141
44839943,0cyclictest14441-21awk11:20:141
44839943,0cyclictest14210-21awk08:20:121
44829944,0cyclictest0-21swapper/010:03:340
44829944,0cyclictest0-21swapper/008:28:210
44829943,0cyclictest3524-21snmpd10:45:540
44829943,0cyclictest3524-21snmpd10:15:540
44829943,0cyclictest2019-21awk10:35:140
44829943,0cyclictest18152-21awk12:00:130
339940,0migration/39320-21kthreadcore11:35:153
339940,0migration/33211-21kthreadcore08:55:153
339940,0migration/327695-21kthreadcore10:10:163
339940,0migration/322301-21kthreadcore08:25:143
329940,0watchdog/30-21swapper/309:57:083
29815040,0irq/29-eth0-tx-19922-21munin-node11:05:152
29815040,0irq/29-eth0-tx-0-21swapper/212:45:102
29815040,0irq/29-eth0-tx-0-21swapper/212:40:002
29815040,0irq/29-eth0-tx-0-21swapper/212:01:122
29815040,0irq/29-eth0-tx-0-21swapper/211:55:142
29815040,0irq/29-eth0-tx-0-21swapper/211:50:052
29815040,0irq/29-eth0-tx-0-21swapper/211:45:102
29815040,0irq/29-eth0-tx-0-21swapper/211:20:032
29815040,0irq/29-eth0-tx-0-21swapper/210:40:112
29815040,0irq/29-eth0-tx-0-21swapper/210:14:582
29815040,0irq/29-eth0-tx-0-21swapper/210:00:072
29815040,0irq/29-eth0-tx-0-21swapper/009:12:440
29815040,0irq/29-eth0-tx-0-21swapper/009:00:080
29805040,0irq/28-eth0-rx-0-21swapper/310:54:583
29805040,0irq/28-eth0-rx-0-21swapper/310:40:223
259940,0migration/26061-21kthreadcore10:55:162
259940,0migration/229321-21fschecks_time11:10:122
259940,0migration/223809-21kthreadcore09:10:142
259940,0migration/217619-21kthreadcore09:45:152
259940,0migration/216418-21processes08:40:182
259940,0migration/215742-21kthreadcore09:25:152
259940,0migration/214686-21kernelversion08:20:142
259940,0migration/211762-21runrttasks07:34:302
249940,0watchdog/27184-21aten2.4-expect09:00:082
249940,0watchdog/24655-21ssh11:15:042
249940,0watchdog/225882-21ssh10:30:122
249940,0watchdog/223995-21tune2fs08:05:122
249940,0watchdog/223995-21tune2fs08:05:122
249940,0watchdog/20-21swapper/209:35:162
249940,0watchdog/20-21swapper/208:15:202
249940,0watchdog/20-21swapper/208:00:122
179940,0migration/15564-21kthreadcore10:55:161
179940,0migration/15270-21taskset09:59:081
179940,0migration/14500-21kthreadcore11:50:151
179940,0migration/128330-21timerwakeupswit11:25:241
179940,0migration/126804-21smart_sda08:25:191
179940,0migration/123922-21kthreadcore09:10:141
179940,0migration/120907-21aten2.4-expect12:40:081
179940,0migration/12050-21fschecks_count07:50:111
179940,0migration/119896-21kthreadcore08:00:121
179940,0migration/119738-21kthreadcore10:45:151
179940,0migration/11937-21kthreadcore11:30:161
179940,0migration/114083-21latency_hist12:54:581
179940,0migration/110932-21fschecks_count12:15:131
179940,0migration/110010-21kthreadcore11:35:161
169940,0watchdog/19472-21wc09:40:161
169940,0watchdog/18259-21grep11:15:161
169940,0watchdog/16118-21python08:55:201
169940,0watchdog/15246-21kthreadcore10:35:161
169940,0watchdog/130664-21kthreadcore11:10:161
169940,0watchdog/128485-21ssh09:52:361
169940,0watchdog/124190-21grep11:45:121
169940,0watchdog/121369-21kthreadcore12:20:161
169940,0watchdog/116950-21cut10:25:081
169940,0watchdog/10-21swapper/110:50:161
169940,0watchdog/10-21swapper/108:40:161
169940,0watchdog/10-21swapper/108:30:161
44859932,0cyclictest6875-21grep07:50:152
44859932,0cyclictest28869-21awk08:30:132
44859932,0cyclictest25396-21tune2fs08:50:102
44839930,0cyclictest28066-21kthreadcore10:30:141
44829933,0cyclictest9867-21kworker/0:108:40:000
44829932,0cyclictest3571-21lldpd11:50:160
44829932,0cyclictest3524-21snmpd12:05:090
44829932,0cyclictest15243-21awk12:55:130
44829932,0cyclictest11659-21ssh12:33:560
44829930,0cyclictest3490-21tune2fs08:35:100
44829930,0cyclictest26609-21munin-node07:45:160
44829930,0cyclictest21562-21perl12:40:110
44829930,0cyclictest18582-21munin-run12:19:570
44829930,0cyclictest17275-21cut11:40:140
44829930,0cyclictest0-21swapper/009:38:180
44829930,0cyclictest0-21swapper/007:40:170
29805030,0irq/28-eth0-rx-0-21swapper/310:20:113
249930,0watchdog/20-21swapper/208:35:002
249930,0watchdog/20-21swapper/208:10:162
249930,0watchdog/20-21swapper/207:35:432
179930,0migration/16371-21kthreadcore08:35:151
169930,0watchdog/10-21swapper/112:45:161
169930,0watchdog/10-21swapper/108:45:041
169930,0watchdog/10-21swapper/108:05:121
169930,0watchdog/10-21swapper/108:05:121
44829921,0cyclictest0-21swapper/011:20:000
169920,0watchdog/10-21swapper/107:54:591
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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