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2026-06-05 - 17:44
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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 Fri Jun 05, 2026 12:44:54)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
15924552280215,51sleep10-21swapper/107:07:001
15923392264190,43sleep00-21swapper/007:05:440
179699860,4rtkit-daemon1775873-21ntpq12:10:211
179699860,4rtkit-daemon1775873-21ntpq12:10:201
179699690,4rtkit-daemon1795-21rtkit-daemon09:40:561
16343352670,3chrt0-21swapper/008:50:180
179699630,13rtkit-daemon1795-21rtkit-daemon11:04:321
179699570,3rtkit-daemon1795-21rtkit-daemon10:10:441
179699560,6rtkit-daemon1795-21rtkit-daemon08:25:140
179699550,5rtkit-daemon1764065-21apt-get11:55:120
179699520,19rtkit-daemon1795-21rtkit-daemon11:35:140
179699520,19rtkit-daemon1795-21rtkit-daemon11:35:140
179699510,21rtkit-daemon1592863-21cyclictest10:26:560
159287299513,13cyclictest1759716-21python311:50:010
159287299493,11cyclictest1726563-21python311:05:010
159287299492,15cyclictest1763907-21ls11:55:010
179699480,4rtkit-daemon1795-21rtkit-daemon09:08:010
179699480,22rtkit-daemon1638949-21vmstat09:00:240
179699470,3rtkit-daemon1795-21rtkit-daemon11:13:011
159287299477,8cyclictest1708337-21latency_hist10:40:000
159287299476,11cyclictest1790325-21cnf-update-db12:30:030
159287299474,9cyclictest1781952-21python312:20:010
159287299470,11cyclictest1748817-21munin-run11:35:000
179699460,3rtkit-daemon1795-21rtkit-daemon11:07:321
179699460,3rtkit-daemon1795-21rtkit-daemon08:29:261
179699450,3rtkit-daemon1795-21rtkit-daemon11:17:011
179699450,3rtkit-daemon1795-21rtkit-daemon07:18:511
159287299452,11cyclictest1737954-21unin-run11:20:000
179699440,3rtkit-daemon1795-21rtkit-daemon09:45:301
159287299448,8cyclictest1690268-21apt-get10:15:120
159287299444,8cyclictest1-21systemd10:25:010
159287299442,13cyclictest1772273-21/usr/sbin/munin12:05:230
159287299442,11cyclictest1660188-21munin-run09:35:000
179699430,3rtkit-daemon1795-21rtkit-daemon07:14:201
159287299431,17cyclictest1642044-21grep09:10:160
159287299431,11cyclictest1731868-21plymouth11:10:230
159287299430,13cyclictest1722856-21sh11:00:010
159287299430,12cyclictest1715800-21date10:50:010
159287299430,12cyclictest1671301-21cron09:50:010
159287299430,11cyclictest1682750-21latency_hist10:05:000
179699420,3rtkit-daemon0-21swapper/008:57:181
159287299429,7cyclictest1635677-21apt-get08:55:120
159287299424,8cyclictest1-21systemd07:55:010
159287299423,9cyclictest1-21systemd08:50:000
159287299423,7cyclictest1671426-21latency_hist09:50:010
159287299421,13cyclictest1690112-21cat10:15:010
159287299421,13cyclictest1609243-21cat07:50:000
159287299421,11cyclictest1686411-21latency_hist10:10:000
159287299421,11cyclictest1664007-21latency_hist09:40:000
179699410,4rtkit-daemon1641345-21diskmemload11:22:520
159287299414,11cyclictest763-21dbus-daemon08:45:000
159287299412,14cyclictest1621596-21sed08:20:010
159287299412,11cyclictest1702260-21mailstats10:30:220
159287299411,9cyclictest1782255-21apt-config12:20:020
159287299411,11cyclictest1795278-21sed12:35:240
159287299411,11cyclictest1667661-21chrt09:45:020
179699400,3rtkit-daemon1795-21rtkit-daemon08:52:211
159287299408,11cyclictest1786467-21apt-get12:25:110
159287299407,8cyclictest1652830-21apt-get09:25:140
159287299402,14cyclictest1611967-21awk07:55:200
159287299400,12cyclictest1652722-21latency_hist09:25:000
159287299400,12cyclictest1605238-21date07:40:010
159287299400,11cyclictest1603206-21cat07:35:010
159287299400,11cyclictest1601295-21latency_hist07:30:010
159287299396,14cyclictest1753114-21/usr/sbin/munin11:40:160
159287299391,11cyclictest1641345-21diskmemload12:05:010
159287299391,11cyclictest1623890-21sed08:25:010
159287299391,10cyclictest1607169-21unin-run07:45:000
159287299390,11cyclictest1778416-21latency_hist12:15:010
159287299390,11cyclictest1778416-21latency_hist12:15:000
159287299390,10cyclictest1708337-21latency_hist10:40:010
159287299387,10cyclictest1629091-21unixbench_multi08:35:270
159287299382,13cyclictest1742524-21grep11:25:190
159287299382,10cyclictest1-21systemd11:05:020
159287299381,10cyclictest1676189-21grep09:55:230
159287299380,11cyclictest1627730-21latency_hist08:35:000
179699370,3rtkit-daemon0-21swapper/008:05:371
1592874993724,3cyclictest1645152-21ssh09:14:531
1592874993713,11cyclictest26-21ksoftirqd/111:50:011
159287299371,13cyclictest1715946-21apt-get10:50:120
1592874993610,5cyclictest26-21ksoftirqd/108:44:591
159287299366,13cyclictest1597637-21expr07:20:140
159287299362,12cyclictest1646341-21ntp_states09:15:230
159287299362,10cyclictest781-21gdbus08:05:250
159287299361,12cyclictest1595207-21cut07:15:020
179699350,4rtkit-daemon1748451-21ssh11:34:181
179699350,3rtkit-daemon0-21swapper/010:30:161
179699350,3rtkit-daemon0-21swapper/008:04:580
1592874993512,9cyclictest26-21ksoftirqd/109:35:181
1592874993512,5cyclictest26-21ksoftirqd/111:25:241
179699340,5rtkit-daemon1653208-21grep09:25:181
1592874993422,2cyclictest1746936-1kworker/u9:111:56:051
179699330,3rtkit-daemon1795-21rtkit-daemon08:10:431
159287499338,12cyclictest26-21ksoftirqd/112:30:031
159287299330,11cyclictest1618948-21awk08:10:240
179699320,3rtkit-daemon1795-21rtkit-daemon10:01:071
179699320,3rtkit-daemon0-21swapper/012:25:561
1592874993215,5cyclictest26-21ksoftirqd/110:20:211
1592874993210,11cyclictest26-21ksoftirqd/111:55:011
159287499320,8cyclictest1683024-21apt-get10:05:131
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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