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2026-03-19 - 22:49
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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 rackcslot4.osadl.org (updated Thu Mar 19, 2026 12:44:52)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15240662265187,28sleep00-21swapper/007:09:210
15239802262187,27sleep10-21swapper/107:08:271
179699840,4rtkit-daemon1795-21rtkit-daemon11:24:470
179699740,4rtkit-daemon1795-21rtkit-daemon07:39:161
179699540,3rtkit-daemon1795-21rtkit-daemon10:54:561
179699530,3rtkit-daemon1795-21rtkit-daemon09:19:311
179699520,4rtkit-daemon1795-21rtkit-daemon09:30:230
179699500,4rtkit-daemon1795-21rtkit-daemon11:03:550
179699500,3rtkit-daemon1795-21rtkit-daemon09:57:570
179699490,4rtkit-daemon1795-21rtkit-daemon07:24:431
179699480,3rtkit-daemon1795-21rtkit-daemon08:56:181
152424799445,13cyclictest1542128-21grep07:50:241
152424799439,13cyclictest1662802-21sh11:15:211
1524247994313,13cyclictest1686756-21fschecks_count11:50:151
152424799425,11cyclictest1619053-21latency_hist10:15:001
152424799418,9cyclictest1673217-21/usr/sbin/munin11:30:181
152424799418,12cyclictest1608631-21apt-get10:00:141
152424799417,12cyclictest1572580-21diskmemload11:40:201
152424799416,14cyclictest1638076-21ntpq10:40:191
152424799416,13cyclictest1648016-21cstates10:55:141
152424799415,14cyclictest1635035-21awk10:35:241
152424799415,12cyclictest1599344-21grep09:45:261
1524247994118,16cyclictest1605210-21apt-get09:55:121
1524247994110,10cyclictest1676027-21apt-get11:35:101
179699400,5rtkit-daemon1-21systemd08:25:000
152424799409,12cyclictest1658412-21ssh11:10:121
152424799405,22cyclictest1668634-21sshd11:24:441
152424799405,11cyclictest1556955-21/usr/sbin/munin08:30:001
152424799404,12cyclictest1595695-21grep09:40:231
1524247994010,8cyclictest1697718-40apt-check12:05:231
179699390,3rtkit-daemon0-21swapper/111:39:010
179699390,3rtkit-daemon0-21swapper/110:36:480
152424799399,10cyclictest1589291-21ssh09:31:321
152424799398,9cyclictest1717950-21runrttasks12:33:291
152424799398,10cyclictest1572580-21diskmemload11:00:121
152424799396,11cyclictest1572835-21apt-get09:10:101
152424799396,11cyclictest1551674-21pmu-power08:15:211
152424799395,23cyclictest1526902-21/usr/sbin/munin07:15:141
152424799395,11cyclictest1695499-21chrt12:01:281
152424799395,11cyclictest1580385-21apt-get09:20:121
152424799395,11cyclictest1566731-21taskset08:55:011
152424799395,10cyclictest1547973-21wc08:05:231
152424799394,12cyclictest1553443-21sh08:20:141
152424799393,12cyclictest1572580-21diskmemload11:45:151
1524247993913,9cyclictest1571559-21ntpq09:05:211
1524247993911,11cyclictest1549198-21fschecks_time08:10:161
179699380,3rtkit-daemon0-21swapper/008:18:520
152424799389,8cyclictest1583771-21apt-get09:25:121
152424799389,10cyclictest1623927-21switchtime10:20:231
152424799387,13cyclictest1614268-21chrt10:07:031
152424799387,11cyclictest1626121-21apt-get10:25:071
152424799387,11cyclictest1572580-21diskmemload12:20:181
152424799385,13cyclictest1561304-21grep08:40:171
152424799384,12cyclictest1537042-21cut07:40:161
152424799384,11cyclictest1560134-21wc08:35:231
179699370,6rtkit-daemon1598750-21/usr/sbin/munin09:45:200
152424799379,11cyclictest1525168-21sh07:10:221
152424799376,15cyclictest1539548-21grep07:45:221
152424799376,14cyclictest1620014-21ssh10:15:211
152424799376,13cyclictest1532009-21sed07:25:251
152424799375,15cyclictest1701400-21grep12:10:151
152424799375,11cyclictest1704936-21grep12:15:161
152424799375,11cyclictest1655409-21grep11:05:181
152424799374,13cyclictest1690963-21gzip11:55:231
152424799374,11cyclictest1544075-21switchtime07:55:221
152424799373,12cyclictest1602031-21fschecks_count09:50:161
179699360,3rtkit-daemon0-21swapper/109:00:011
152424799365,9cyclictest1712563-21sed12:25:201
152424799365,13cyclictest1640788-21apt-get10:45:101
152424799365,12cyclictest1630309-21cstates10:30:131
152424799364,13cyclictest1545610-21missed_timers08:00:181
1524247993618,10cyclictest1532790-21apt-get07:30:111
179699350,4rtkit-daemon1795-21rtkit-daemon09:24:220
179699350,4rtkit-daemon1679479-21apt-get11:40:100
152424799356,11cyclictest1669560-21/usr/sbin/munin11:25:191
152424799355,11cyclictest1572580-21diskmemload12:37:441
152424799355,11cyclictest1563462-21basename08:45:171
152424799354,10cyclictest1592323-21grep09:35:231
152424799354,10cyclictest1557114-21/usr/sbin/munin08:30:201
179699340,4rtkit-daemon1795-21rtkit-daemon10:30:150
179699340,3rtkit-daemon1795-21rtkit-daemon12:18:010
179699340,3rtkit-daemon1795-21rtkit-daemon09:25:320
179699330,4rtkit-daemon1795-21rtkit-daemon07:54:470
179699330,3rtkit-daemon0-21swapper/109:12:430
179699330,3rtkit-daemon0-21swapper/108:05:460
179699320,3rtkit-daemon0-21swapper/110:24:360
179699320,3rtkit-daemon0-21swapper/110:00:250
179699310,4rtkit-daemon1561753-21strings08:40:190
179699310,3rtkit-daemon1795-21rtkit-daemon08:39:400
179699310,3rtkit-daemon0-21swapper/107:47:540
179699300,4rtkit-daemon1795-21rtkit-daemon12:30:310
179699300,4rtkit-daemon1795-21rtkit-daemon09:41:270
179699300,3rtkit-daemon1795-21rtkit-daemon07:20:220
1524243993015,6cyclictest763-21dbus-daemon07:45:010
179699290,4rtkit-daemon1535433-21strings07:35:190
179699290,3rtkit-daemon1795-21rtkit-daemon12:12:460
179699280,3rtkit-daemon0-21swapper/111:51:090
179699280,3rtkit-daemon0-21swapper/111:31:130
179699280,3rtkit-daemon0-21swapper/108:57:060
179699280,3rtkit-daemon0-21swapper/108:02:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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