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2026-05-07 - 20:02
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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 Thu May 07, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1805999230,17cyclictest0-21swapper/111:20:211
18058992118,2cyclictest30744-21latency12:15:150
18058992118,2cyclictest30744-21latency12:15:150
1806099203,2cyclictest1614-21bounce07:35:232
1806099202,17cyclictest18763-21smtpd09:01:202
1806099193,15cyclictest26639-21cat07:25:142
1806099193,15cyclictest0-21swapper/210:16:002
18060991915,3cyclictest0-21swapper/207:47:112
1806099190,1cyclictest0-21swapper/211:20:212
1806099190,18cyclictest0-21swapper/212:17:582
1806099190,18cyclictest0-21swapper/212:17:582
1806099190,18cyclictest0-21swapper/209:42:042
1806099190,15cyclictest0-21swapper/210:47:482
1805999193,15cyclictest0-21swapper/107:15:151
1805999192,2cyclictest7515-21chrt08:42:411
18059991914,4cyclictest843-21systemd-network10:10:511
1805999190,1cyclictest0-21swapper/109:30:151
1805999190,18cyclictest0-21swapper/111:49:541
1805999190,17cyclictest7140-21grep09:40:131
18058991916,2cyclictest3414-21master10:52:520
1805899190,5cyclictest0-21swapper/009:57:560
1805899190,16cyclictest23401-21fschecks_count08:15:130
1806099182,15cyclictest0-21swapper/207:14:522
18060991816,1cyclictest0-21swapper/210:12:002
18060991816,1cyclictest0-21swapper/208:14:402
18060991815,2cyclictest2886-21iscsid10:25:172
18060991814,1cyclictest0-21swapper/211:50:172
1806099180,2cyclictest4099-21H222:10:212
1806099180,2cyclictest3991-21H222:10:212
1806099180,2cyclictest3979-21H222:10:212
1806099180,1cyclictest0-21swapper/212:35:102
1806099180,16cyclictest4480-21anvil08:39:172
1806099180,16cyclictest28293-21nfsd412:10:182
18059991815,2cyclictest29752-21http_loadtime10:20:151
18059991814,2cyclictest15915-21http_loadtime09:55:141
1805999181,2cyclictest3989-21H222:10:211
1805999180,17cyclictest843-21systemd-network09:14:431
1805899182,1cyclictest9-21ksoftirqd/007:56:540
18058991814,3cyclictest1670-21cut09:30:140
1805899181,16cyclictest1526-21lxd09:40:420
18060991715,1cyclictest7227-21chrt10:36:152
18060991715,1cyclictest0-21swapper/211:55:212
18060991715,1cyclictest0-21swapper/208:09:032
18060991714,2cyclictest3707-21master08:42:172
18060991714,2cyclictest29433-21/usr/sbin/munin11:15:202
18060991714,2cyclictest20637-21/usr/sbin/munin10:05:232
18060991714,2cyclictest20637-21/usr/sbin/munin10:05:232
18060991714,2cyclictest15552-21expr09:55:132
18060991714,2cyclictest14549-21ls11:45:202
1806099171,15cyclictest0-21swapper/210:55:182
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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