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2026-05-30 - 18:58
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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 30, 2026 12:45:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
146142220155,22sleep10-21swapper/107:06:541
146162206171,23sleep30-21swapper/307:06:563
148072202168,22sleep00-21swapper/007:09:260
145122202169,22sleep20-21swapper/207:05:342
1534499679,16cyclictest23439-21/usr/sbin/munin07:25:161
15344996710,16cyclictest27926-21grep10:50:131
1534499669,16cyclictest531-21awk12:05:011
1534499669,16cyclictest12176-21cat10:15:251
1534499649,17cyclictest17467-21awk12:35:241
1534499649,15cyclictest26953-21cat10:45:231
1534499649,15cyclictest23639-21irqrtprio08:30:181
1534499639,16cyclictest7025-21expr11:10:231
15345996220,5cyclictest33-21ksoftirqd/211:30:192
1534499619,16cyclictest10234-21taskset11:19:041
1534499618,11cyclictest28018-21apt-config09:45:011
1534499618,11cyclictest20619-21cstates09:30:131
15344996110,10cyclictest22180-21phc2sys11:40:221
1534399610,3cyclictest5352-21latency_hist11:10:000
1534499609,16cyclictest5387-21/usr/sbin/munin07:55:181
1534499608,13cyclictest2315-21gnome-shell12:28:591
1534399605,22cyclictest2429-21taskset08:52:490
1534399601,30cyclictest0-21swapper/009:27:160
1534399601,29cyclictest0-21swapper/010:52:130
1534399600,3cyclictest22229-21seq07:21:120
1534399600,3cyclictest19724-21seq07:15:500
1534399595,22cyclictest4896-21taskset07:51:440
1534399591,3cyclictest17553-21seq08:17:490
1534399591,29cyclictest0-21swapper/012:38:040
1534399591,29cyclictest0-21swapper/010:04:310
1534399591,28cyclictest0-21swapper/010:47:280
1534399591,22cyclictest0-21swapper/012:17:180
1534399591,22cyclictest0-21swapper/011:24:310
1534399590,3cyclictest9973-21seq11:15:490
1534399590,3cyclictest30125-21seq11:55:440
1534399590,3cyclictest27398-21seq09:41:000
1534399590,3cyclictest24808-21taskset10:40:270
1534399590,3cyclictest22313-21seq09:31:470
1534499588,15cyclictest25572-21latency_hist11:50:001
1534399582,28cyclictest0-21swapper/011:04:480
1534399581,3cyclictest0-21swapper/008:40:350
1534399581,2cyclictest0-21swapper/009:57:530
1534399581,2cyclictest0-21swapper/009:52:360
1534399581,2cyclictest0-21swapper/007:39:450
1534399581,24cyclictest20118-21seq08:23:590
1534399580,3cyclictest5460-21seq12:14:260
1534399580,3cyclictest20497-21seq11:38:240
1534399580,3cyclictest20497-21seq11:38:240
1534399580,3cyclictest14849-21seq09:15:530
108452580,2sleep30-21swapper/308:05:163
15345995717,7cyclictest33-21ksoftirqd/210:00:182
1534399576,31cyclictest22425-21taskset10:36:320
1534399571,2cyclictest0-21swapper/009:39:150
1534399571,2cyclictest0-21swapper/007:12:570
1534399570,3cyclictest32346-21taskset08:48:110
1534399570,3cyclictest15569-21seq12:34:190
1534399570,3cyclictest10492-21seq09:10:080
15345995618,4cyclictest33-21ksoftirqd/211:50:192
1534499569,8cyclictest30868-21hddtemp_smartct08:45:161
1534499568,16cyclictest16746-21taskset09:20:231
1534399561,3cyclictest32230-21taskset07:40:280
1534399561,2cyclictest0-21swapper/010:15:420
1534399560,3cyclictest32585-21seq12:00:330
1534399560,3cyclictest2552-21seq07:48:120
1534699556,8cyclictest41-21ksoftirqd/310:25:213
1534699554,9cyclictest41-21ksoftirqd/309:15:233
15345995515,5cyclictest33-21ksoftirqd/209:51:282
1534499559,8cyclictest18720-21iostat_ios08:20:181
1534499559,8cyclictest1425-21irqstats07:45:191
1534499559,16cyclictest23398-21hddtemp_smartct09:35:181
1534499557,7cyclictest7537-21ls12:15:251
1534399554,28cyclictest0-21swapper/011:50:410
1534399551,3cyclictest0-21swapper/011:14:040
1534399551,2cyclictest0-21swapper/009:05:500
15345995413,7cyclictest33-21ksoftirqd/210:40:142
1534499549,9cyclictest20954-21diskstats10:35:161
1534499549,8cyclictest15241-21users12:30:261
1534499549,7cyclictest13878-21hddtemp_smartct11:25:201
1534499548,7cyclictest2922-21apt-get11:05:121
1534399543,27cyclictest0-21swapper/010:26:460
1534399540,3cyclictest17890-21taskset11:34:090
1534499539,8cyclictest903-21hddtemp_smartct08:50:171
1534499539,8cyclictest4784-21users07:50:301
1534499539,8cyclictest4166-21memory08:55:201
1534499539,8cyclictest25713-21cstates09:40:131
1534499539,7cyclictest4299-21irqstats12:10:181
1534499539,7cyclictest18460-21df_abs10:30:121
1534499539,6cyclictest28553-21iostat_ios08:40:171
1534499539,17cyclictest9660-21systemctl10:10:251
1534499538,7cyclictest20902-21df_inode08:25:141
1534499538,7cyclictest13304-21diskstats08:10:151
1534499537,14cyclictest27902-21apt-get07:35:101
44912520,1sleep30-21swapper/308:55:233
1534699527,6cyclictest41-21ksoftirqd/310:45:133
1534699524,11cyclictest41-21ksoftirqd/311:25:273
15345995213,5cyclictest33-21ksoftirqd/210:22:502
1534499529,9cyclictest9036-21memory08:00:221
1534499529,8cyclictest1223-21df_inode12:05:131
1534499529,7cyclictest25817-21df07:30:141
1534499529,7cyclictest16623-21memory08:15:191
1534499529,6cyclictest6671-21irqstats10:05:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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