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2026-05-12 - 13:23
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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
Compare latency of primary with shadow system
Characteristics of the 100 highest latencies:
System rackaslot8.osadl.org (updated Tue May 12, 2026 00:44:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
48472283252,21sleep10-21swapper/119:08:481
46662282252,19sleep20-21swapper/219:06:442
48762279217,51sleep00-21swapper/019:09:120
48342259229,20sleep30-21swapper/319:08:383
285722750,1sleep328557-21munin-run21:30:003
133442710,1sleep013329-21munin-run22:00:010
156882670,0sleep3504-21dbus-daemon23:20:003
304372600,0sleep20-21swapper/221:10:372
280632560,0sleep00-21swapper/000:25:280
126362560,0sleep00-21swapper/023:37:110
185632540,0sleep30-21swapper/319:35:203
318522530,0sleep10-21swapper/100:28:261
108862200,0sleep30-21swapper/323:55:293
190912190,1sleep10-21swapper/121:43:351
172492180,0sleep10-21swapper/122:40:461
218122160,0sleep30-21swapper/300:02:203
83712150,0sleep10-21swapper/121:17:121
256802130,0sleep10-21swapper/119:55:001
232552130,0sleep20-21swapper/200:03:272
285662120,3sleep334-21ksoftirqd/323:07:513
276242120,0sleep20-21swapper/222:08:202
42452100,0sleep20-21swapper/222:13:562
21745290,0sleep30-21swapper/322:24:423
50549984,2cyclictest275-21systemd-journal19:11:372
50549983,3cyclictest7529-21munin-run20:25:002
50509985,2cyclictest11199-21smart_sda20:30:181
50469981,4cyclictest18660-21awk20:50:000
29331280,0sleep20-21swapper/222:29:142
22494280,0sleep30-21swapper/323:04:303
15945280,0sleep20-21swapper/200:18:492
50579973,3cyclictest9083-21sed20:25:203
50579973,3cyclictest658-21snmpd21:14:513
50579973,3cyclictest275-21systemd-journal23:55:013
50579973,3cyclictest275-21systemd-journal19:13:323
50579973,2cyclictest275-21systemd-journal22:36:453
50579970,3cyclictest4834-21/usr/sbin/munin21:35:123
50549976,1cyclictest28-21ksoftirqd/219:25:002
50549973,3cyclictest7304-21vmstat21:55:222
50549973,3cyclictest275-21systemd-journal21:45:382
50549971,3cyclictest0-21swapper/223:10:012
50549970,1cyclictest14673-21ssh22:59:502
50509974,2cyclictest22-21ksoftirqd/100:00:001
50509973,3cyclictest658-21snmpd22:06:321
50509973,3cyclictest658-21snmpd19:22:331
50509973,3cyclictest504-21dbus-daemon23:30:011
50509973,3cyclictest275-21systemd-journal21:35:001
50509973,3cyclictest275-21systemd-journal20:20:011
50509972,3cyclictest275-21systemd-journal00:20:001
50509972,3cyclictest13899-21systemctl22:20:011
50509970,6cyclictest30359-21basename22:30:011
50509970,1cyclictest27572-21diskmemload22:31:121
50469974,2cyclictest12-21ksoftirqd/000:00:000
50469973,3cyclictest658-21snmpd22:38:030
50469973,1cyclictest9274-21turbostat00:15:010
50469972,1cyclictest0-21swapper/021:25:120
27466270,0sleep20-21swapper/223:26:202
22204270,0sleep20-21swapper/223:43:142
19639270,0sleep30-21swapper/319:40:133
13886270,0sleep20-21swapper/222:39:362
5379260,0sleep20-21swapper/223:13:382
50579966,0cyclictest0-21swapper/321:55:063
50579966,0cyclictest0-21swapper/321:15:443
50579966,0cyclictest0-21swapper/300:05:363
50579963,2cyclictest7313-21sh00:13:293
50579963,2cyclictest658-21snmpd22:05:203
50579963,2cyclictest658-21snmpd21:00:203
50579963,2cyclictest34-21ksoftirqd/321:45:183
50579963,2cyclictest28601-21sh23:46:493
50579963,2cyclictest275-21systemd-journal21:07:523
50579963,2cyclictest275-21systemd-journal20:13:143
50579963,2cyclictest22681-21users20:55:203
50579963,2cyclictest11344-21ssh22:18:043
50579963,2cyclictest10143-21df00:15:123
50579963,2cyclictest0-21swapper/322:41:083
50579963,1cyclictest0-21swapper/322:12:193
50579963,1cyclictest0-21swapper/321:20:213
50579962,3cyclictest671-21ntpd21:40:183
50579962,3cyclictest658-21snmpd23:27:073
50579962,3cyclictest658-21snmpd23:20:013
50579962,3cyclictest658-21snmpd23:13:303
50579962,3cyclictest658-21snmpd22:45:223
50579962,3cyclictest658-21snmpd22:30:383
50579962,3cyclictest658-21snmpd22:29:293
50579962,3cyclictest658-21snmpd20:54:503
50579962,3cyclictest658-21snmpd19:26:193
50579962,3cyclictest658-21snmpd19:15:183
50579962,3cyclictest3517-21expr20:15:163
50579962,3cyclictest275-21systemd-journal21:30:483
50579962,3cyclictest15085-21expr19:30:133
50579962,3cyclictest0-21swapper/321:50:113
50579961,3cyclictest275-21systemd-journal23:30:373
50579960,6cyclictest0-21swapper/323:35:393
50579960,6cyclictest0-21swapper/300:26:243
50579960,5cyclictest504-21dbus-daemon20:00:003
50579960,4cyclictest275-21systemd-journal00:30:483
50579960,3cyclictest20686-21rm23:42:023
50549966,0cyclictest0-21swapper/219:45:122
50549963,2cyclictest658-21snmpd22:00:292
50549963,2cyclictest658-21snmpd20:26:332
50549963,2cyclictest658-21snmpd20:01:072
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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