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2026-07-20 - 21:22
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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 100 highest latencies:
System rack5slot2.osadl.org (updated Mon Jul 20, 2026 12:44:42)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
135162195179,12sleep10-21swapper/107:08:521
133122192175,12sleep30-21swapper/307:06:483
133142191173,13sleep00-21swapper/007:06:500
13571212085,13sleep20-21swapper/207:09:332
139342490,0sleep00-21swapper/011:04:100
321862470,0sleep10-21swapper/111:29:291
245362440,0sleep10-21swapper/111:09:311
125712440,0sleep00-21swapper/012:07:590
238402430,0sleep10-21swapper/111:40:421
260382420,0sleep20-21swapper/210:21:292
298362410,0sleep10-21swapper/109:35:201
172492410,0sleep20-21swapper/210:33:372
29922100,0sleep10-21swapper/110:42:201
26754290,0sleep10-21swapper/109:50:131
13222290,0sleep10-21swapper/111:35:211
137679971,3cyclictest19577-21munin-run09:15:010
137679960,3cyclictest580-21munin-run11:30:000
137789955,0cyclictest16326-21kworker/3:112:39:493
137789955,0cyclictest16326-21kworker/3:112:28:373
137789955,0cyclictest16326-21kworker/3:109:29:293
137789955,0cyclictest0-21swapper/311:45:133
137789952,3cyclictest802-21snmpd11:12:443
137789950,1cyclictest11305-21ntp_states09:10:183
137729950,5cyclictest7167-21ssh12:21:052
137729950,5cyclictest0-21swapper/212:36:232
137729950,5cyclictest0-21swapper/211:55:292
137729950,5cyclictest0-21swapper/211:49:142
137729950,5cyclictest0-21swapper/211:38:462
137729950,4cyclictest0-21swapper/209:20:132
137729950,1cyclictest3288-21ntp_states10:10:172
137729950,0cyclictest0-21swapper/209:16:192
137689952,2cyclictest0-21swapper/109:10:131
137689951,3cyclictest0-21swapper/108:45:121
137689951,2cyclictest0-21swapper/112:25:111
137689951,2cyclictest0-21swapper/109:45:121
137689951,2cyclictest0-21swapper/108:00:121
137689950,5cyclictest0-21swapper/110:29:271
137689950,5cyclictest0-21swapper/109:41:161
137679955,0cyclictest0-21swapper/010:26:480
137679955,0cyclictest0-21swapper/010:20:240
137679952,3cyclictest12895-21cat08:10:170
137679950,5cyclictest27559-21diskstats07:35:120
137679950,5cyclictest25492-21kworker/0:010:09:100
137679950,5cyclictest0-21swapper/012:34:520
137679950,5cyclictest0-21swapper/012:00:140
137679950,5cyclictest0-21swapper/011:17:440
137679950,5cyclictest0-21swapper/011:07:160
137679950,5cyclictest0-21swapper/010:39:380
137679950,5cyclictest0-21swapper/009:20:360
6582240,0sleep30-21swapper/309:40:143
17325240,0sleep00-21swapper/010:17:230
137789944,0cyclictest16326-21kworker/3:111:21:263
137789944,0cyclictest16326-21kworker/3:110:36:403
137789944,0cyclictest16326-21kworker/3:109:07:073
137789944,0cyclictest0-21swapper/310:24:293
137789943,1cyclictest4018-21unixbench_singl08:55:223
137789942,1cyclictest802-21snmpd11:02:353
137789942,1cyclictest802-21snmpd10:58:343
137789942,1cyclictest802-21snmpd10:15:323
137789941,2cyclictest0-21swapper/311:15:133
137789940,4cyclictest984-21irqstats10:25:173
137789940,4cyclictest6998-21apt-get08:00:113
137789940,4cyclictest25339-21ls11:10:013
137789940,4cyclictest23174-21sed11:40:203
137789940,4cyclictest21432-21ssh09:31:033
137789940,4cyclictest0-21swapper/312:00:113
137789940,4cyclictest0-21swapper/311:29:133
137789940,4cyclictest0-21swapper/310:40:133
137789940,4cyclictest0-21swapper/310:10:123
137789940,3cyclictest5039-21diskstats07:55:143
137789940,3cyclictest22616-21df_inode07:25:113
137789940,3cyclictest21319-21sed08:25:223
137789940,3cyclictest19516-21latency_hist10:35:003
137789940,3cyclictest0-21swapper/307:40:113
137789940,1cyclictest27490-21memory09:50:163
137789940,1cyclictest24786-21df10:05:133
137789940,1cyclictest14986-21memory07:10:153
137789940,1cyclictest14126-21/usr/sbin/munin10:00:123
137789940,1cyclictest12771-21hddtemp_smartct08:10:163
137789940,0cyclictest0-21swapper/309:37:113
137729944,0cyclictest0-21swapper/211:28:162
137729944,0cyclictest0-21swapper/211:15:032
137729944,0cyclictest0-21swapper/209:12:402
137729943,1cyclictest21573-21tr11:40:122
137729943,1cyclictest14126-21/usr/sbin/munin10:00:142
137729942,2cyclictest24991-21cat12:30:172
137729942,2cyclictest24291-21ssh09:49:072
137729941,3cyclictest57150irq/125-eth009:25:192
137729940,4cyclictest8547-21perl10:45:152
137729940,4cyclictest31582-21ssh12:00:482
137729940,4cyclictest24517-21apt-get08:35:122
137729940,4cyclictest2041-21apt-get07:50:132
137729940,4cyclictest0-21swapper/212:19:042
137729940,4cyclictest0-21swapper/212:06:402
137729940,4cyclictest0-21swapper/211:32:072
137729940,4cyclictest0-21swapper/210:40:042
137729940,4cyclictest0-21swapper/210:25:212
137729940,4cyclictest0-21swapper/209:40:072
137729940,4cyclictest0-21swapper/209:00:122
137729940,4cyclictest0-21swapper/208:15:122
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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