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2026-05-13 - 22:19
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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 Wed May 13, 2026 12:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15618952265185,29sleep00-21swapper/007:08:300
15620002264180,68sleep10-21swapper/107:09:371
17471162740,3sleep10-21swapper/112:13:201
179699640,4rtkit-daemon1795-21rtkit-daemon11:17:511
179699590,4rtkit-daemon1795-21rtkit-daemon07:16:520
17566682570,3sleep10-21swapper/112:25:241
17152062570,6sleep1251rcuc/111:30:191
17470492560,4sleep00-21swapper/012:13:100
17502772550,4sleep00-21swapper/012:17:230
179699540,4rtkit-daemon1795-21rtkit-daemon11:34:590
179699530,4rtkit-daemon1795-21rtkit-daemon07:35:240
179699510,4rtkit-daemon1795-21rtkit-daemon07:40:051
179699510,3rtkit-daemon1795-21rtkit-daemon08:58:141
179699490,4rtkit-daemon1795-21rtkit-daemon12:07:000
179699490,3rtkit-daemon1795-21rtkit-daemon10:05:221
179699490,3rtkit-daemon1795-21rtkit-daemon09:00:201
179699480,4rtkit-daemon1795-21rtkit-daemon07:26:361
179699400,6rtkit-daemon1795-21rtkit-daemon09:48:210
179699390,4rtkit-daemon893-21snmpd09:43:470
179699380,3rtkit-daemon0-21swapper/012:01:110
179699380,2rtkit-daemon1795-21rtkit-daemon09:14:530
179699370,4rtkit-daemon1572358-21chrt07:34:110
156214799373,9cyclictest1619415-21/usr/sbin/munin09:20:241
156214799370,8cyclictest26-21ksoftirqd/110:55:221
156214799370,10cyclictest1611445-21/usr/sbin/munin09:10:231
179699360,4rtkit-daemon1795-21rtkit-daemon08:25:110
179699360,3rtkit-daemon0-21swapper/108:53:041
179699360,3rtkit-daemon0-21swapper/009:51:400
179699360,3rtkit-daemon0-21swapper/007:11:320
156214799365,9cyclictest26-21ksoftirqd/112:15:191
156214799365,2cyclictest1-21systemd09:45:001
156214799360,8cyclictest1565849-21grep07:15:241
179699350,5rtkit-daemon1662702-21apt-get10:20:110
179699350,4rtkit-daemon1795-21rtkit-daemon10:12:111
179699350,3rtkit-daemon1734255-21ssh11:55:200
16324362350,10sleep013-21ksoftirqd/009:39:110
156214799358,9cyclictest1720734-21sh11:37:511
156214799354,10cyclictest1741923-21sed12:05:241
179699340,4rtkit-daemon1795-21rtkit-daemon12:33:560
179699340,4rtkit-daemon1795-21rtkit-daemon10:40:520
179699340,4rtkit-daemon1795-21rtkit-daemon09:55:410
179699340,4rtkit-daemon1795-21rtkit-daemon09:21:440
179699340,3rtkit-daemon0-21swapper/010:01:470
156214799346,13cyclictest1670730-21ntpq10:30:201
156214799344,8cyclictest1610082-21diskmemload11:08:321
156214799340,9cyclictest26-21ksoftirqd/112:30:251
156214799340,9cyclictest1587401-21sensors08:10:231
156214799340,7cyclictest1707288-21apt-get11:20:131
179699330,4rtkit-daemon1795-21rtkit-daemon11:29:160
179699330,4rtkit-daemon1795-21rtkit-daemon08:02:010
179699330,3rtkit-daemon1795-21rtkit-daemon07:52:191
156214799333,11cyclictest1614709-21/usr/sbin/munin09:15:161
156214799332,9cyclictest1666323-21apt-get10:25:121
156214799331,9cyclictest1729697-21apt-get11:50:121
156214799331,8cyclictest1610082-21diskmemload11:46:141
156214799330,10cyclictest1713527-21chrt11:28:051
179699320,3rtkit-daemon0-21swapper/110:57:390
179699320,3rtkit-daemon0-21swapper/008:23:161
156214799322,9cyclictest1622360-21/usr/sbin/munin09:25:171
156214799321,11cyclictest1610082-21diskmemload10:40:121
156214799321,10cyclictest1724396-21ssh11:42:361
156214799320,9cyclictest26-21ksoftirqd/110:00:571
179699310,4rtkit-daemon1795-21rtkit-daemon08:20:400
179699310,3rtkit-daemon0-21swapper/108:33:240
179699310,3rtkit-daemon0-21swapper/009:47:471
179699310,3rtkit-daemon0-21swapper/007:31:261
156214799315,7cyclictest251rcuc/110:50:101
1562147993115,4cyclictest26-21ksoftirqd/109:50:101
156214799310,9cyclictest1753108-21ssh12:20:321
156214799310,7cyclictest1629478-21apt-get09:35:141
179699300,4rtkit-daemon1795-21rtkit-daemon11:53:190
179699300,3rtkit-daemon0-21swapper/111:20:470
179699300,3rtkit-daemon0-21swapper/110:12:320
179699300,3rtkit-daemon0-21swapper/107:44:560
179699300,3rtkit-daemon0-21swapper/008:25:301
156214799307,8cyclictest26-21ksoftirqd/111:55:221
156214799301,9cyclictest1665105-21taskset10:22:461
156214799301,7cyclictest1682223-21unixbench_multi10:45:251
156214799301,13cyclictest1737077-21ssh12:00:111
156214799300,13cyclictest1628244-21ssh09:32:581
156214799300,10cyclictest850-21runrttasks08:45:251
156214199302,21cyclictest1580527-21apt-get07:55:140
179699290,3rtkit-daemon0-21swapper/007:23:561
156214799295,10cyclictest26-21ksoftirqd/107:45:181
156214799293,7cyclictest1610082-21diskmemload10:35:131
156214799292,8cyclictest1581464-21sendmail_mailqu07:55:221
1562147992919,6cyclictest1596170-21apt-get08:35:111
156214799290,9cyclictest1693538-21ssh11:00:491
156214799290,9cyclictest1660998-21ssh10:16:581
156214799290,8cyclictest1563135-21awk07:10:231
156214799290,7cyclictest1700271-21fschecks_time11:10:191
156214799290,10cyclictest1764112-21ssh12:35:291
156214799290,10cyclictest1599702-21taskset08:43:061
179699280,4rtkit-daemon1795-21rtkit-daemon11:41:370
179699280,3rtkit-daemon1795-21rtkit-daemon09:00:010
179699280,3rtkit-daemon0-21swapper/108:43:440
179699280,3rtkit-daemon0-21swapper/008:06:241
16146962280,1sleep00-21swapper/009:15:150
156214799286,8cyclictest26-21ksoftirqd/107:35:191
156214799280,11cyclictest1647467-21ssh09:59:501
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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