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2026-06-29 - 17:09
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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 50 highest latencies:
System rackbslot7.osadl.org (updated Mon Jun 29, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
11089991183,42cyclictest24419-21ssh11:49:060
10194211411,69sleep110261-21awk06:53:491
11089991054,29cyclictest29313-21nfs4_client10:08:330
111119910446,50cyclictest0-21swapper/211:28:262
111119910446,50cyclictest0-21swapper/211:28:262
110899910446,51cyclictest0-21swapper/008:03:060
110899910446,49cyclictest0-21swapper/009:33:210
11089991043,30cyclictest20149-21latency_hist10:48:070
110899910351,45cyclictest0-21swapper/010:13:410
110899910350,45cyclictest0-21swapper/010:08:050
110899910350,45cyclictest0-21swapper/010:08:050
110899910342,53cyclictest23417-21apt-key07:33:080
110899910342,53cyclictest23417-21apt-key07:33:080
11089991033,41cyclictest20012-21fschecks_count09:53:270
11089991033,41cyclictest20012-21fschecks_count09:53:270
11089991032,26cyclictest5957-21cpuspeed11:18:210
11089991032,24cyclictest6644-21taskset12:13:150
11089991032,24cyclictest6644-21taskset12:13:150
110899910249,46cyclictest18602-21diskmemload08:58:050
110899910249,46cyclictest18602-21diskmemload08:58:050
11089991023,7cyclictest0-21swapper/009:23:180
11089991023,7cyclictest0-21swapper/009:23:180
11089991023,33cyclictest30455-21taskset11:03:450
111119910152,40cyclictest29323-21acpi11:03:152
110899910135,60cyclictest0-21swapper/012:03:260
110899910135,60cyclictest0-21swapper/012:03:260
11089991013,30cyclictest2762-21grep10:18:300
11089991013,30cyclictest2762-21grep10:18:300
11089991013,30cyclictest18957-21cpu08:58:210
11089991013,27cyclictest11098-21latency_hist06:58:080
11089991013,22cyclictest20413-21ls10:48:190
11101999910,76cyclictest13948-21sort09:43:391
11101999910,76cyclictest13948-21sort09:43:391
11089999942,51cyclictest10925-21sh08:33:230
1108999993,31cyclictest26431-21cpuspeed10:58:210
1108999992,27cyclictest29039-21taskset11:55:580
11089999843,49cyclictest4081-21ssh11:13:560
11089999843,48cyclictest0-21swapper/011:38:260
11089999836,56cyclictest0-21swapper/007:03:060
11089999826,65cyclictest0-21swapper/012:08:350
11089999740,50cyclictest18747-21fschecks_time07:18:280
11089999740,50cyclictest18747-21fschecks_time07:18:280
11089999736,51cyclictest0-21swapper/007:08:220
1108999972,27cyclictest12963-21seq10:35:170
1108999972,27cyclictest12963-21seq10:35:170
1108999972,24cyclictest23826-21latency10:53:300
11089999642,47cyclictest0-21swapper/008:03:370
11089999642,47cyclictest0-21swapper/008:03:370
11089999631,58cyclictest0-21swapper/010:43:040
11089999629,61cyclictest0-21swapper/011:43:290
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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