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2026-01-12 - 11:14
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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 rackbslot7.osadl.org (updated Mon Jan 12, 2026 00:44:28)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1172222100,24sleep00-21swapper/019:09:230
1172222100,24sleep00-21swapper/019:09:230
117759911460,46cyclictest0-21swapper/000:34:370
117759911141,64cyclictest0-21swapper/023:34:210
11784991083,73cyclictest26098-21apt-get22:14:372
117759910633,8cyclictest0-21swapper/023:59:460
117759910633,8cyclictest0-21swapper/023:59:460
11784991052,62cyclictest14946-21apt-get22:50:162
117759910546,50cyclictest0-21swapper/020:24:370
117759910422,19cyclictest0-21swapper/021:31:460
117759910422,19cyclictest0-21swapper/021:31:460
117759910415,27cyclictest21817-21fschecks_count23:54:410
117759910349,47cyclictest0-21swapper/020:39:500
117759910341,56cyclictest15662-21cpuspeed23:44:360
117759910250,45cyclictest0-21swapper/020:04:560
117759910246,51cyclictest11766-21cyclictest22:26:520
117759910240,56cyclictest0-21swapper/022:19:220
117799910146,48cyclictest0-21swapper/119:39:551
117759910140,53cyclictest0-21swapper/021:54:500
117759910050,43cyclictest0-21swapper/023:19:430
11775999935,57cyclictest8369-21ntp_kernel_pll_21:44:480
11779999872,13cyclictest0-21swapper/122:59:231
11775999843,47cyclictest0-21swapper/021:29:240
11775999833,52cyclictest0-21swapper/020:14:230
1178499972,66cyclictest7412-21ssh00:24:352
11779999756,34cyclictest10802-21kernelversion00:29:451
1177599974,27cyclictest1746-21/usr/sbin/munin21:34:440
11775999739,53cyclictest0-21swapper/019:49:480
11775999674,12cyclictest0-21swapper/022:39:550
11775999674,12cyclictest0-21swapper/022:39:550
11775999644,45cyclictest0-21swapper/021:09:530
11775999628,7cyclictest0-21swapper/021:24:210
11775999627,8cyclictest0-21swapper/023:39:410
1177599962,40cyclictest7030-21apt-key00:24:220
1177599962,37cyclictest3427-21run-parts22:29:550
1177599962,37cyclictest3427-21run-parts22:29:550
11775999610,23cyclictest29986-21sh23:14:320
11775999571,12cyclictest0-21swapper/020:49:220
1177599954,27cyclictest10272-21latency_hist00:29:220
11775999530,7cyclictest0-21swapper/000:09:560
1177599952,41cyclictest19442-21wc23:49:540
11779999471,15cyclictest1552-21sh23:19:561
1177599944,25cyclictest15888-21/usr/sbin/munin22:51:130
11775999433,20cyclictest7371-21kworker/u17:2+nfsiod22:13:560
1177599943,31cyclictest4531-21/usr/sbin/munin23:24:570
1177599943,31cyclictest4531-21/usr/sbin/munin23:24:570
1177599943,27cyclictest18382-21grep22:54:430
11775999417,23cyclictest2885-21sh00:16:450
11784999351,38cyclictest11766-21cyclictest21:44:372
11779999374,9cyclictest0-21swapper/119:34:231
11779999372,15cyclictest11766-21cyclictest23:26:391
11779999372,15cyclictest11766-21cyclictest23:26:391
11779999371,14cyclictest0-21swapper/100:19:451
11779999346,40cyclictest10008-21ssh23:34:451
1177599934,25cyclictest16826-21/usr/sbin/munin21:59:530
11775999334,51cyclictest0-21swapper/021:39:480
11775999334,51cyclictest0-21swapper/021:39:480
1177599933,28cyclictest5684-21runrttasks22:34:330
1177599933,27cyclictest10763-21/usr/sbin/munin21:49:360
1177599933,26cyclictest19848-21/usr/sbin/munin22:04:290
1177599933,26cyclictest19848-21/usr/sbin/munin22:04:290
11775999330,8cyclictest0-21swapper/023:14:220
11775999326,7cyclictest0-21swapper/019:09:400
11775999326,7cyclictest0-21swapper/019:09:400
11779999250,35cyclictest0-21swapper/122:29:441
11779999250,35cyclictest0-21swapper/122:29:441
11779999242,43cyclictest5744-21latency_hist20:29:221
11779999238,47cyclictest0-21swapper/123:54:411
1177599924,27cyclictest12443-21/usr/sbin/munin20:50:030
11775999235,50cyclictest0-21swapper/019:15:220
1177599923,30cyclictest4258-21latency_hist20:24:220
1177599923,29cyclictest22022-21/usr/sbin/munin22:59:570
1177599923,26cyclictest18841-21latency_hist21:09:230
1177599923,26cyclictest18841-21latency_hist21:09:230
1177599923,16cyclictest10158-21/usr/sbin/munin23:34:480
1177599922,29cyclictest18197-21sed19:24:560
1177599922,25cyclictest30094-21latency_hist20:04:220
11779999173,9cyclictest0-21swapper/120:20:371
11779999133,8cyclictest0-21swapper/121:27:341
11779999129,8cyclictest0-21swapper/119:49:361
1177599914,27cyclictest15682-21/usr/sbin/munin20:59:430
1177599914,25cyclictest15430-21idleruntime-cro20:59:200
1177599913,28cyclictest23360-21switchtime21:15:440
1177599913,28cyclictest23360-21switchtime21:15:440
1177599913,11cyclictest0-21swapper/022:19:290
11775999126,8cyclictest0-21swapper/020:34:420
1177599912,25cyclictest19461-21/usr/sbin/munin19:29:520
11775999119,20cyclictest12486-21seq00:32:460
1178499902,50cyclictest17251-21apt-get19:24:302
11779999067,13cyclictest0-21swapper/122:39:541
11779999067,13cyclictest0-21swapper/122:39:541
1177999903,23cyclictest2341-21/usr/sbin/munin21:34:491
1177599903,26cyclictest23955-21/usr/sbin/munin23:04:580
1177599903,26cyclictest23955-21/usr/sbin/munin23:04:580
11775999013,21cyclictest28506-21cat00:04:550
115942905,15sleep10-21swapper/119:08:481
115942905,15sleep10-21swapper/119:08:481
1178499893,25cyclictest11967-21apt-get19:09:302
1178499893,25cyclictest11967-21apt-get19:09:302
11779998969,14cyclictest0-21swapper/119:34:421
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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