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2026-05-16 - 21:40
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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
Characteristics of the 100 highest latencies:
System rackdslot4.osadl.org (updated Sat May 16, 2026 12:45:50)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
138591204171,22phc2sys0-21swapper/307:05:413
323862202168,22sleep00-21swapper/007:06:370
325382201168,22sleep10-21swapper/107:08:351
323882200167,22sleep20-21swapper/207:06:392
138491660,1ptp4l401ktimersoftd/309:54:423
49699630,26cyclictest29882-21dpkg11:23:481
49599636,18cyclictest7925-21sshd11:44:530
49599616,18cyclictest3409-21df_abs08:20:130
49699600,23cyclictest31321-21sh12:30:191
49699600,23cyclictest31321-21sh12:30:181
13422600,6sleep049599cyclictest07:10:180
13422600,6sleep049599cyclictest07:10:180
49699590,27cyclictest11797-21proc_pri07:30:241
49699586,27cyclictest27743-21cat09:09:591
49699580,26cyclictest31778-21/usr/sbin/munin09:15:241
49599586,12cyclictest15401-21wc12:00:000
49599586,10cyclictest17955-21latency_hist08:50:000
138491580,1ptp4l401ktimersoftd/309:40:233
49599576,17cyclictest10645-21apt-get11:50:110
282362570,3sleep149699cyclictest08:05:151
49699560,24cyclictest2017-21awk11:30:221
138491560,1ptp4l401ktimersoftd/311:26:193
49599555,16cyclictest8282-21df_abs09:35:160
49599535,11cyclictest8859-21cat11:45:160
28692530,5sleep22872-21latency_hist08:20:002
1385915336,9phc2sys0-21swapper/307:10:013
1385915336,9phc2sys0-21swapper/307:10:003
49599526,12cyclictest20983-21fschecks_time10:00:160
316172520,2sleep10-21swapper/111:25:211
49599496,17cyclictest2005-21python08:15:260
49599486,11cyclictest24374-21ps07:55:240
49599486,10cyclictest26832-21tr10:10:240
49599485,7cyclictest15774-21df07:40:130
496994727,17cyclictest25-21ksoftirqd/107:55:121
49599476,16cyclictest2244-21sensors_temp11:30:240
49599476,12cyclictest25629-21latency_hist12:20:010
49599475,7cyclictest28605-21iostat09:10:180
49599474,8cyclictest15824-21hddtemp_smartct09:50:160
138491470,0ptp4l401ktimersoftd/309:10:243
49599466,11cyclictest26130-21sed12:20:160
49599454,7cyclictest18567-21hddtemp_smartct08:50:160
49699440,27cyclictest5399-21apt09:30:111
49599445,11cyclictest17743-21latency_hist11:00:010
49599444,8cyclictest13590-21iostat_ios08:40:170
49599444,7cyclictest20837-21diskstats07:50:150
49699430,23cyclictest5537-21grep10:35:141
49599436,10cyclictest2376-21date12:35:250
138491430,0ptp4l401ktimersoftd/308:25:003
497994236,3cyclictest33-21ksoftirqd/209:55:002
49599425,11cyclictest31834-21grep09:15:240
497994135,4cyclictest33-21ksoftirqd/211:40:002
497994135,3cyclictest33-21ksoftirqd/208:55:012
49699410,25cyclictest10643-21apt11:50:111
49599415,10cyclictest26559-21latency08:00:200
138491410,1ptp4l401ktimersoftd/309:06:523
49599406,12cyclictest7050-21sed08:25:260
49599405,11cyclictest30368-21latency_hist12:30:000
138491400,0ptp4l401ktimersoftd/311:35:163
498993932,4cyclictest41-21ksoftirqd/312:10:583
497993928,9cyclictest33-21ksoftirqd/210:35:252
49599393,7cyclictest9130-21meminfo07:25:190
49599393,7cyclictest21492-21irqstats08:55:200
134991390,3getstats41-21ksoftirqd/310:19:523
50798380,3rtkit-daemon31453-21ls10:20:212
497993834,3cyclictest33-21ksoftirqd/207:20:002
497993833,3cyclictest33-21ksoftirqd/210:00:002
497993833,3cyclictest33-21ksoftirqd/209:50:012
497993833,3cyclictest33-21ksoftirqd/207:40:172
497993828,9cyclictest33-21ksoftirqd/210:00:252
49699380,24cyclictest7859-21apt-get09:35:121
49599386,10cyclictest23710-21cut10:05:200
498993732,3cyclictest6811-21phc2sys10:35:233
498993731,4cyclictest41-21ksoftirqd/310:23:533
498993731,4cyclictest41-21ksoftirqd/308:45:533
498993731,4cyclictest41-21ksoftirqd/308:32:453
498993731,4cyclictest41-21ksoftirqd/307:27:263
498993731,4cyclictest41-21ksoftirqd/307:16:233
498993730,4cyclictest41-21ksoftirqd/312:03:553
498993730,4cyclictest41-21ksoftirqd/310:32:123
498993730,4cyclictest41-21ksoftirqd/308:54:153
497993733,3cyclictest33-21ksoftirqd/212:25:192
497993732,3cyclictest33-21ksoftirqd/209:00:202
497993732,2cyclictest33-21ksoftirqd/207:25:002
497993731,4cyclictest33-21ksoftirqd/210:41:262
497993731,4cyclictest33-21ksoftirqd/207:25:282
49699370,22cyclictest0-21swapper/110:30:141
49599375,11cyclictest9524-21ssh08:30:260
138491370,0ptp4l401ktimersoftd/310:05:173
498993630,4cyclictest41-21ksoftirqd/312:29:133
498993630,4cyclictest41-21ksoftirqd/307:42:583
497993631,3cyclictest33-21ksoftirqd/209:00:002
497993631,3cyclictest33-21ksoftirqd/207:55:122
497993630,4cyclictest33-21ksoftirqd/212:17:382
497993630,4cyclictest33-21ksoftirqd/211:10:332
497993630,4cyclictest33-21ksoftirqd/209:36:192
497993630,4cyclictest33-21ksoftirqd/208:33:522
497993629,4cyclictest33-21ksoftirqd/209:24:222
497993624,9cyclictest33-21ksoftirqd/208:20:182
496993630,4cyclictest25-21ksoftirqd/112:19:201
496993630,4cyclictest25-21ksoftirqd/111:45:581
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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