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2025-11-19 - 00:14
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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 rackdslot0.osadl.org (updated Tue Nov 18, 2025 12:45:56)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1763899260,5cyclictest0-21swapper/209:30:212
17636992423,1cyclictest1042-21mii-tool10:25:171
17638992322,1cyclictest28-21ksoftirqd/209:09:582
17638992319,3cyclictest28-21ksoftirqd/207:12:492
17638992316,3cyclictest0-21swapper/210:09:102
1763899230,22cyclictest823-21systemd-network08:16:542
1763899230,18cyclictest26306-21updatedb.mlocat07:25:002
1763899230,18cyclictest0-21swapper/212:13:082
1763599230,4cyclictest0-21swapper/010:00:200
1763899222,19cyclictest0-21swapper/211:23:352
1763899222,16cyclictest3254-21smartctl08:35:212
17638992217,2cyclictest796-21grep07:35:192
17638992216,5cyclictest26664-21apt-key10:15:012
17638992214,7cyclictest5182-21seq07:44:072
1763899221,2cyclictest15144-21chrt11:49:412
1763899220,3cyclictest0-21swapper/211:06:452
1763899220,1cyclictest0-21swapper/210:55:152
1763899220,17cyclictest0-21swapper/210:40:182
1763899220,16cyclictest27841-21latency_hist11:15:002
1763899220,16cyclictest24737-21tr12:05:182
1763899220,16cyclictest19169-21seq08:07:462
1763899220,16cyclictest0-21swapper/210:48:272
1763899220,15cyclictest20930-21latency08:10:192
17635992222,0cyclictest0-21swapper/010:05:180
1763599220,4cyclictest0-21swapper/011:20:190
1763599220,18cyclictest0-21swapper/010:33:350
1763899212,18cyclictest0-21swapper/209:18:282
17638992113,7cyclictest29390-21/usr/sbin/munin07:30:142
1763899210,2cyclictest3441-21gsd-color12:15:162
1763899210,2cyclictest2237-21vmstat10:25:232
1763899210,2cyclictest15787-21grep11:50:162
1763899210,20cyclictest5693-21expr09:35:222
1763899210,20cyclictest30214-21ls10:20:142
1763899210,1cyclictest0-21swapper/212:30:222
1763899210,1cyclictest0-21swapper/208:45:232
1763899210,19cyclictest0-21swapper/210:15:192
1763899210,16cyclictest5758-21chrt10:35:012
1763899210,15cyclictest20596-21fschecks_time11:00:162
1763899210,15cyclictest13734-21latency09:50:172
1763899210,15cyclictest0-21swapper/210:00:242
17636992114,3cyclictest0-21swapper/111:05:011
17636992114,3cyclictest0-21swapper/107:39:321
17636992112,0cyclictest0-21swapper/108:45:181
1763599213,3cyclictest10008-21systemctl07:50:220
17638992014,5cyclictest6390-21cat12:30:002
17638992014,5cyclictest32116-21sed09:25:182
17638992014,5cyclictest0-21swapper/211:30:192
17638992014,5cyclictest0-21swapper/208:25:032
17638992014,5cyclictest0-21swapper/208:20:222
17638992013,6cyclictest3441-21gsd-color12:00:532
1763899200,1cyclictest0-21swapper/212:38:592
1763899200,1cyclictest0-21swapper/209:55:142
1763899200,19cyclictest0-21swapper/212:20:012
1763899200,19cyclictest0-21swapper/211:15:182
1763899200,19cyclictest0-21swapper/209:21:422
1763899200,19cyclictest0-21swapper/208:50:262
1763899200,16cyclictest1086-21snmpd08:00:172
1763899200,15cyclictest4530-21H212:26:332
1763699205,1cyclictest0-21swapper/108:55:191
17636992018,1cyclictest0-21swapper/109:35:531
1763699200,19cyclictest2079-21systemd-udevd08:03:071
1763599208,11cyclictest0-21swapper/009:30:560
1763599203,2cyclictest26795-21cpuspeed_turbos07:25:150
17635992016,3cyclictest0-21swapper/012:27:560
1763599200,19cyclictest893-21systemd-logind11:32:070
17638991914,5cyclictest0-21swapper/211:35:222
17638991914,4cyclictest1634-21grep11:25:162
17638991913,5cyclictest22908-21df09:10:162
17638991913,5cyclictest10933-21if_err_lxdbr009:45:182
17638991913,5cyclictest0-21swapper/209:00:152
17638991913,5cyclictest0-21swapper/209:00:152
1763899190,1cyclictest0-21swapper/210:50:212
1763899190,18cyclictest0-21swapper/210:40:002
1763899190,18cyclictest0-21swapper/207:45:142
1763899190,18cyclictest0-21swapper/207:15:272
1763899190,18cyclictest0-21swapper/207:15:272
1763899190,17cyclictest0-21swapper/207:25:152
1763899190,0cyclictest0-21swapper/211:55:132
1763899190,0cyclictest0-21swapper/207:54:552
1763699193,15cyclictest31969-21sshd12:15:541
1763699193,15cyclictest21-21ksoftirqd/107:32:381
1763699192,15cyclictest0-21swapper/111:06:201
17636991917,1cyclictest4536-21H212:26:331
17636991917,1cyclictest4536-21H212:26:331
17636991917,1cyclictest0-21swapper/111:30:151
17636991917,1cyclictest0-21swapper/108:40:591
17636991916,2cyclictest24074-21cstates12:05:151
17636991916,2cyclictest18251-21date11:55:011
17636991916,2cyclictest12820-21date11:45:011
17636991916,1cyclictest0-21swapper/108:05:201
17636991915,3cyclictest0-21swapper/107:58:301
1763699190,16cyclictest4523-21H212:26:331
1763599197,11cyclictest0-21swapper/009:35:560
1763599192,3cyclictest0-21swapper/011:19:000
1763599192,2cyclictest12152-21grep08:50:200
17635991917,1cyclictest0-21swapper/010:52:490
17635991916,2cyclictest6615-21expr10:35:160
17635991915,3cyclictest30106-21grep10:20:140
1763599191,17cyclictest0-21swapper/009:08:050
1763599190,3cyclictest17706-21sort08:05:180
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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