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2026-03-15 - 22:07
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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 Sun Mar 15, 2026 12:44:33)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15739912264,53cyclictest1564-21cyclictest11:55:460
15739912169,46cyclictest8926-21diskmemload10:50:360
308212012,76sleep2314-21/usr/sbin/munin07:01:292
15739911848,65cyclictest0-21swapper/012:30:480
15739911848,65cyclictest0-21swapper/012:30:480
15739911757,54cyclictest6980-21munin-run10:50:110
15739911757,54cyclictest6980-21munin-run10:50:110
1573991152,27cyclictest22124-21taskset11:15:120
1573991083,90cyclictest16705-21apt-get07:50:230
1573991083,34cyclictest1575-21cat07:05:150
15739910740,61cyclictest0-21swapper/009:45:390
15739910663,35cyclictest11557-21ntp_kernel_pll_11:50:400
15739910663,35cyclictest11557-21ntp_kernel_pll_11:50:400
1573991043,27cyclictest9724-21runrttasks11:47:320
15739910243,48cyclictest0-21swapper/008:00:480
15739910243,48cyclictest0-21swapper/008:00:480
1573991022,22cyclictest23890-21taskset10:23:410
15739910145,50cyclictest0-21swapper/010:10:440
15739910143,49cyclictest0-21swapper/008:50:370
1573991013,25cyclictest21037-21sh10:19:030
15819910055,39cyclictest544-21cron10:50:111
15819910055,39cyclictest544-21cron10:50:111
1573991002,24cyclictest23209-21ssh12:10:410
157399993,25cyclictest1742-21/usr/sbin/munin07:05:380
157399993,25cyclictest1742-21/usr/sbin/munin07:05:380
157399992,28cyclictest352-21runrttasks09:02:570
1581999857,34cyclictest14974-21systemd-run09:15:121
1573999849,42cyclictest0-21swapper/008:45:480
1573999849,42cyclictest0-21swapper/008:45:480
157399982,26cyclictest15398-21expr09:15:280
158899973,73cyclictest20525-21kworker/u18:2+flush-179:012:10:272
1573999742,49cyclictest0-21swapper/012:20:420
157399972,32cyclictest31267-21seq11:30:130
157399972,23cyclictest31152-21if_eth010:35:360
157399972,23cyclictest31152-21if_eth010:35:360
1581999652,37cyclictest0-21swapper/112:25:501
1573999640,50cyclictest0-21swapper/011:42:440
1573999640,50cyclictest0-21swapper/011:42:440
1573999639,50cyclictest16525-21apt-get11:06:090
1588999574,15cyclictest297-21systemd-logind12:30:122
1581999554,36cyclictest20787-21kworker/u17:3+events_unbound09:35:111
1573999546,42cyclictest0-21swapper/008:10:490
1573999542,47cyclictest1-21systemd07:45:450
1573999539,51cyclictest0-21swapper/012:25:300
157399953,80cyclictest12432-21/usr/sbin/munin09:10:330
157399953,33cyclictest352-21runrttasks09:21:330
157399952,28cyclictest352-21runrttasks10:09:440
157399952,28cyclictest11247-21timerwakeupswit10:55:460
157399943,26cyclictest22925-21runrttasks12:10:150
157399943,10cyclictest7045-21apt-get07:20:220
1573999342,45cyclictest0-21swapper/010:40:280
157399933,82cyclictest15973-21sh11:05:110
157399933,82cyclictest15973-21sh11:05:110
1573999335,49cyclictest0-21swapper/011:25:150
1573999335,49cyclictest0-21swapper/011:25:150
1573999312,28cyclictest19129-21rm12:03:540
1573999312,28cyclictest19129-21rm12:03:540
1581999268,18cyclictest3536-21sh09:50:141
157399924,26cyclictest27730-21/usr/sbin/munin10:30:470
1573999238,46cyclictest0-21swapper/009:05:270
1573999238,46cyclictest0-21swapper/009:05:270
157399923,31cyclictest3950-21/usr/sbin/munin07:10:340
157399922,82cyclictest352-21runrttasks09:33:150
157399922,34cyclictest27268-21ssh09:35:240
158899918,60cyclictest16584-21runrttasks11:05:342
1573999139,44cyclictest29560-21cron08:30:150
157399913,30cyclictest10094-21fschecks_time10:00:330
157399913,29cyclictest1749-21systemctl11:35:110
1573999131,50cyclictest0-21swapper/008:00:140
1573999131,50cyclictest0-21swapper/008:00:140
157399912,30cyclictest24775-21ssh10:25:260
157399912,23cyclictest9466-21idleruntime-cro10:00:110
1581999076,8cyclictest0-21swapper/111:15:431
157399903,28cyclictest2540-21cat11:35:380
157399903,20cyclictest27658-21taskset08:24:070
1573999024,59cyclictest0-21swapper/007:25:270
1581998970,9cyclictest0-21swapper/111:35:291
1581998960,17cyclictest31037-21sh10:35:341
1581998960,17cyclictest31037-21sh10:35:341
1581998942,40cyclictest8926-21diskmemload11:26:101
157399894,29cyclictest22713-21ssh11:15:320
157399893,30cyclictest26158-21awk08:20:120
157399893,29cyclictest30221-21/usr/sbin/munin09:40:270
157399893,27cyclictest12060-21fschecks_count07:35:320
157399892,28cyclictest3802-21seq09:50:260
157399892,23cyclictest26109-21sh12:15:250
1573998866,15cyclictest1564-21cyclictest07:15:320
157399883,30cyclictest10785-21taskset07:30:410
157399883,30cyclictest10785-21taskset07:30:410
157399883,26cyclictest6139-21ls08:55:360
157399883,25cyclictest1460-21ntpq08:41:350
157399883,25cyclictest1460-21ntpq08:41:350
157399882,27cyclictest21426-21df_inode09:25:300
1588998758,20cyclictest28786-21ssh12:20:132
157399873,28cyclictest28237-21/usr/sbin/munin08:25:210
157399873,27cyclictest13476-21/usr/sbin/munin07:40:390
157399873,24cyclictest21810-21tune2fs08:05:340
157399873,24cyclictest21810-21tune2fs08:05:340
1581998669,8cyclictest0-21swapper/109:00:151
1581998628,48cyclictest0-21swapper/109:15:211
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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