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2026-09-21 - 00:15
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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 Sun Sep 20, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
13593213810,20sleep10-21swapper/107:04:261
13593213810,20sleep10-21swapper/107:04:261
14633991172,94cyclictest21555-21apt-get11:49:100
14633991172,94cyclictest21555-21apt-get11:49:100
146339911549,57cyclictest26726-21latency_hist07:43:530
14638991142,32cyclictest21607-21runrttasks11:49:101
14638991142,32cyclictest21607-21runrttasks11:49:101
146339911250,55cyclictest26694-21ssh10:09:180
14633991122,6cyclictest0-21swapper/010:24:030
146339911221,61cyclictest0-21swapper/012:09:260
146339911221,61cyclictest0-21swapper/012:09:260
146339910744,56cyclictest20756-21diskmemload09:59:190
146339910646,54cyclictest29177-21cpu10:14:070
146339910646,54cyclictest29177-21cpu10:14:070
146339910646,52cyclictest0-21swapper/010:04:000
146339910646,52cyclictest0-21swapper/010:04:000
146339910629,68cyclictest4576-21latency_hist09:33:530
146339910541,55cyclictest2655-21fschecks_time08:09:130
146339910442,54cyclictest11750-21latency09:44:380
146339910442,54cyclictest11750-21latency09:44:380
14633991034,88cyclictest17420-21apt-get08:54:370
146339910346,53cyclictest14625-21cyclictest09:34:140
146339910346,53cyclictest14625-21cyclictest09:34:140
14633991033,89cyclictest13345-21grep11:34:260
14642991015,41cyclictest12308-21taskset11:34:002
146389910153,38cyclictest0-21swapper/110:09:231
146339910139,53cyclictest0-21swapper/010:38:520
14633991012,60cyclictest17549-21seq11:42:330
1463399993,7cyclictest0-21swapper/011:19:020
14633999937,54cyclictest0-21swapper/007:29:120
37882980,6sleep30-21swapper/310:24:283
1463399984,87cyclictest0-21swapper/007:08:540
1463399984,87cyclictest0-21swapper/007:08:540
1463399983,58cyclictest16062-21seq07:12:410
14633999743,48cyclictest0-21swapper/011:11:400
14633999742,49cyclictest0-21swapper/011:04:270
1463399973,78cyclictest12364-21apt-get08:39:030
1463399973,78cyclictest12364-21apt-get08:39:030
1463399973,6cyclictest0-21swapper/011:44:050
1463399972,83cyclictest0-21swapper/010:54:010
14633999646,45cyclictest14625-21cyclictest07:44:170
14633999640,44cyclictest0-21swapper/012:24:150
1463399954,77cyclictest17726-21apt-get10:49:030
1463399954,77cyclictest17726-21apt-get10:49:030
14633999540,47cyclictest0-21swapper/011:33:520
1463399952,6cyclictest0-21swapper/012:29:040
14633999443,47cyclictest0-21swapper/010:44:180
14633999443,44cyclictest0-21swapper/012:19:130
14633999443,44cyclictest0-21swapper/012:19:130
14633999439,48cyclictest0-21swapper/009:39:010
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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