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2026-03-20 - 06:28
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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 rackcslot4.osadl.org (updated Fri Mar 20, 2026 00:44:51)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
31436012262192,55sleep10-21swapper/119:07:551
31434222258183,27sleep00-21swapper/019:06:010
31599422650,5sleep13159945-21unixbench_multi19:45:241
31765272630,5sleep1284-20systemd-journal20:30:001
179699610,4rtkit-daemon1795-21rtkit-daemon21:52:481
3143927996015,12cyclictest3192179-21diskmemload21:35:041
179699600,7rtkit-daemon3192179-21diskmemload22:52:201
179699600,6rtkit-daemon3154203-21apt-get19:35:041
3143927995913,11cyclictest3334631-21python300:30:031
3143927995811,11cyclictest3192179-21diskmemload21:20:011
179699580,4rtkit-daemon1795-21rtkit-daemon23:46:021
3143927995713,11cyclictest3192179-21diskmemload23:40:011
3143927995512,13cyclictest3294565-21/usr/sbin/munin23:30:231
3143927995511,14cyclictest3218393-21ssh21:45:021
179699550,4rtkit-daemon1795-21rtkit-daemon20:13:011
179699550,19rtkit-daemon1795-21rtkit-daemon22:49:481
32677972540,4sleep00-21swapper/022:53:340
3143927995313,14cyclictest3250912-21apt-get22:30:111
3143927995310,14cyclictest3226706-21mailstats21:55:241
32075512520,4sleep03207549-21seq21:30:160
3143927995215,13cyclictest3273779-21ssh23:00:461
179699520,4rtkit-daemon1795-21rtkit-daemon22:01:151
179699520,4rtkit-daemon1795-21rtkit-daemon21:30:491
179699520,4rtkit-daemon1795-21rtkit-daemon21:13:201
179699520,4rtkit-daemon1795-21rtkit-daemon19:17:290
32154212510,4sleep10-21swapper/121:40:181
3143927995115,12cyclictest3245674-21ssh22:22:151
3143927995112,11cyclictest3254407-21apt-get22:35:121
3143927995110,11cyclictest3192179-21diskmemload00:25:181
179699510,4rtkit-daemon1795-21rtkit-daemon23:44:131
179699510,3rtkit-daemon1795-21rtkit-daemon00:24:281
179699510,3rtkit-daemon0-21swapper/120:52:391
179699510,18rtkit-daemon1795-21rtkit-daemon22:40:131
314392799509,11cyclictest3342507-21latency_hist00:40:001
3143927995012,13cyclictest3288191-21ssh23:21:281
3143927995011,11cyclictest3203324-21apt-get21:25:131
3143927995010,24cyclictest3279023-21sshd23:09:451
179699500,4rtkit-daemon1795-21rtkit-daemon20:34:251
314392799499,11cyclictest3312154-21sed23:55:261
3143927994914,12cyclictest3307682-21ssh23:50:141
3143927994914,11cyclictest3192179-21diskmemload22:10:121
3143927994913,13cyclictest3315989-21chrt00:00:301
3143927994911,11cyclictest3320820-21apt-get00:10:121
3143927994911,11cyclictest3239833-21apt-get22:15:121
3143927994911,11cyclictest3232859-21apt-get22:05:121
179699490,18rtkit-daemon0-21swapper/022:28:291
32143152480,4sleep00-21swapper/021:39:050
3143927994814,11cyclictest3156793-21taskset19:40:111
3143927994812,11cyclictest3289958-21apt-get23:25:121
179699480,18rtkit-daemon1795-21rtkit-daemon21:20:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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