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2026-09-21 - 02:50
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 rack7slot8.osadl.org (updated Sun Sep 20, 2026 14:44:17)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2792225539,54sleep00-21swapper/007:08:170
30609916226,21cyclictest1408-21nginx08:10:480
3060991577,16cyclictest12999-21apt-get07:52:110
30609915737,27cyclictest101ktimersoftd/011:45:170
3060991568,16cyclictest21515-21apt-get10:27:130
30609915645,30cyclictest101ktimersoftd/009:51:320
3060991558,17cyclictest21079-21apt-get12:31:440
30609915564,12cyclictest101ktimersoftd/007:56:470
3060991538,19cyclictest1305-21snmpd10:40:420
30609915255,15cyclictest25363-21latency_hist08:35:020
30609915235,31cyclictest17007-21ntpq10:05:360
30609915218,34cyclictest14964-21runrttasks10:00:070
3060991519,18cyclictest7291-21ntp_states07:25:400
30609915046,14cyclictest10150irq/55-4a10000012:30:050
30609915045,18cyclictest29802-21runrttasks08:50:220
30609915040,28cyclictest3650irq/20-4900000011:40:470
30609914943,10cyclictest101ktimersoftd/008:15:170
30609914860,13cyclictest101ktimersoftd/009:35:190
30609914728,40cyclictest14886-21apt-get10:00:340
30609914456,12cyclictest101ktimersoftd/007:25:010
30609914147,13cyclictest10150irq/55-4a10000012:05:280
30609913647,13cyclictest10150irq/55-4a10000009:15:210
306099127102,15cyclictest0-21swapper/007:10:040
10774211415,83sleep010790-21cut11:50:120
30609910542,28cyclictest10250irq/56-4a10000012:20:350
27478210413,78sleep026596-21apt-get08:40:580
1943621035,84sleep019463-21awk10:15:350
2374421005,83sleep023745-21sshd12:38:250
186922965,11sleep018693-21sshd10:12:250
47652944,73sleep04771-21/usr/sbin/munin11:25:220
85312905,73sleep08537-21ntp_states07:30:400
324342906,69sleep032491-21which11:05:460
306099887,16cyclictest29659-21df10:55:170
3060998849,24cyclictest0-21swapper/009:21:270
3060998825,47cyclictest0-21swapper/008:56:220
122512885,72sleep012253-21fw_forwarded_lo11:55:280
311342865,70sleep031140-21ntp_states11:00:460
3060998645,28cyclictest3650irq/20-4900000010:50:370
3060998638,31cyclictest10851-21entropy07:40:230
3060998634,17cyclictest32451-21ntp_kernel_pll_09:00:360
3060998449,18cyclictest754-21systemd-journal11:11:270
3060998424,43cyclictest0-21swapper/011:32:000
3060998424,28cyclictest3177-21latency_hist11:20:050
3060998343,9cyclictest101ktimersoftd/009:30:370
3060998336,33cyclictest101ktimersoftd/008:20:210
3060998331,15cyclictest6410-21processes09:25:440
3060998252,14cyclictest10150irq/55-4a10000009:40:240
3060998246,24cyclictest101ktimersoftd/012:10:410
3060998221,15cyclictest17504-21latency_hist08:05:030
3060998220,15cyclictest25615-21latency_hist10:40:040
3060998129,15cyclictest10913-21aten_r7power_cu09:45:130
3060998120,27cyclictest5521-21latency_hist07:20:040
3060998055,17cyclictest24109-21cron08:30:010
3060998051,14cyclictest10150irq/55-4a10000009:05:210
3060998050,15cyclictest10150irq/55-4a10000009:14:580
3060998041,26cyclictest101ktimersoftd/008:45:290
3060998038,10cyclictest101ktimersoftd/007:35:500
3060997960,12cyclictest101ktimersoftd/011:35:260
3060997850,13cyclictest10150irq/55-4a10000010:30:390
3060997848,14cyclictest10150irq/55-4a10000007:45:520
3060997847,13cyclictest10150irq/55-4a10000012:15:260
3060997759,11cyclictest101ktimersoftd/008:35:240
3060997748,13cyclictest10150irq/55-4a10000011:21:290
3060997728,31cyclictest20450-21tr10:20:130
137842775,61sleep013800-21mailstats12:00:480
3060997647,14cyclictest10150irq/55-4a10000008:05:120
3060997452,13cyclictest101ktimersoftd/010:45:220
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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