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2025-11-19 - 01:46
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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 50 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
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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