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2026-07-27 - 19:54
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Data to construct the above plot have been generated using the RT test utility cyclictest.

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 rackbslot6.osadl.org (updated Mon Jul 27, 2026 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1068911070,4ptp4l401ktimersoftd/309:15:173
21918998659,18cyclictest121rcu_preempt09:15:342
106891710,1ptp4l401ktimersoftd/311:52:403
197422635,45sleep00-21swapper/009:10:470
25602620,5sleep02190699cyclictest12:40:540
106891620,8ptp4l401ktimersoftd/314:13:283
297662610,1sleep00-21swapper/014:14:320
143602600,3sleep02190699cyclictest12:19:580
183812590,2sleep0101ktimersoftd/011:50:550
106891590,1ptp4l401ktimersoftd/310:45:533
297942580,1sleep00-21swapper/010:35:560
106891570,1ptp4l401ktimersoftd/314:29:423
106891570,1ptp4l401ktimersoftd/312:02:233
87172560,2sleep30-21swapper/309:51:063
87172560,2sleep30-21swapper/309:51:063
160622550,2sleep20-21swapper/212:54:332
73212540,2sleep30-21swapper/312:11:183
106891510,1ptp4l401ktimersoftd/312:05:423
106891470,2ptp4l24624-21kworker/3:012:42:593
21906994538,4cyclictest9-21ksoftirqd/012:50:500
145291446,8phc2sys41-21ksoftirqd/311:29:503
106891430,1ptp4l401ktimersoftd/313:30:243
106891430,1ptp4l401ktimersoftd/313:30:243
2191899418,20cyclictest15279-21diskmemload13:15:022
106891410,1ptp4l401ktimersoftd/310:31:003
21906994033,4cyclictest9-21ksoftirqd/014:00:550
106891400,1ptp4l401ktimersoftd/309:35:483
106891390,2ptp4l24624-21kworker/3:013:53:293
106891390,1ptp4l401ktimersoftd/314:37:503
106891390,1ptp4l401ktimersoftd/311:46:243
2191899381,4cyclictest13581-21chrt13:57:042
2191899380,5cyclictest8429-21uniq11:40:522
2191899380,5cyclictest8429-21uniq11:40:522
21906993831,3cyclictest9-21ksoftirqd/014:20:540
106891380,1ptp4l401ktimersoftd/314:23:223
106891380,1ptp4l401ktimersoftd/313:37:583
106891380,1ptp4l401ktimersoftd/311:57:443
106891380,1ptp4l401ktimersoftd/311:21:093
21918993711,23cyclictest5110-21sed10:51:092
106891370,1ptp4l401ktimersoftd/314:18:523
106891370,1ptp4l401ktimersoftd/314:02:513
106891370,1ptp4l401ktimersoftd/313:33:563
106891370,1ptp4l401ktimersoftd/313:17:503
106891370,1ptp4l401ktimersoftd/312:17:583
106891370,0ptp4l401ktimersoftd/313:21:273
106891370,0ptp4l401ktimersoftd/313:21:273
2191899363,25cyclictest31060-21apt-get14:15:542
21918993619,14cyclictest33-21ksoftirqd/211:03:442
21918993618,15cyclictest10019-21threads14:26:092
21918993615,18cyclictest24245-21sh14:08:292
2191899361,29cyclictest0-21swapper/213:30:532
21918993612,21cyclictest18851-21cut13:30:402
21918993612,21cyclictest18851-21cut13:30:402
2191899360,4cyclictest4407-21phc2sys-jitter11:36:002
2191899360,4cyclictest13392-21ls11:10:522
21906993624,10cyclictest9-21ksoftirqd/013:25:390
21906993624,10cyclictest9-21ksoftirqd/013:25:390
106891360,1ptp4l401ktimersoftd/313:48:553
106891360,1ptp4l401ktimersoftd/313:10:143
106891360,1ptp4l401ktimersoftd/312:56:123
106891360,1ptp4l401ktimersoftd/312:54:043
106891360,1ptp4l401ktimersoftd/312:35:273
106891360,1ptp4l401ktimersoftd/311:17:273
106891360,1ptp4l401ktimersoftd/310:17:343
106891360,1ptp4l401ktimersoftd/309:33:453
106891360,0ptp4l401ktimersoftd/312:21:453
106891360,0ptp4l401ktimersoftd/311:39:243
106891360,0ptp4l401ktimersoftd/311:30:433
106891360,0ptp4l401ktimersoftd/310:20:513
106891360,0ptp4l401ktimersoftd/309:50:233
2191899353,27cyclictest0-21swapper/210:10:472
2191899352,30cyclictest27854-21cpuspeed_turbos12:00:512
2191899351,28cyclictest7221-21apt-get09:50:502
2191899351,28cyclictest7221-21apt-get09:50:502
21918993510,22cyclictest25008-21cat14:41:112
2191899350,4cyclictest958-21ssh12:38:542
2191899350,4cyclictest19479-21cat10:15:502
2191899350,4cyclictest10311-21ssh12:48:062
106891350,2ptp4l19372-21kworker/3:112:26:593
106891350,2ptp4l19372-21kworker/3:110:08:423
106891350,1ptp4l401ktimersoftd/314:34:213
106891350,1ptp4l401ktimersoftd/313:11:483
106891350,1ptp4l401ktimersoftd/313:04:363
106891350,0ptp4l401ktimersoftd/313:56:033
2191899348,23cyclictest26863-21sed11:25:582
2191899348,22cyclictest18000-21cpuspeed_turbos11:50:522
2191899342,24cyclictest2468-21apt-get09:40:482
21918993414,17cyclictest9541-21sh13:53:312
21918993411,20cyclictest5294-21/usr/sbin/munin12:10:512
21918993410,20cyclictest22543-21irqrtprio10:20:532
2191899340,4cyclictest28424-21snmp_o5powerctl13:06:062
2191899340,4cyclictest16561-21if_err_enp1s011:15:562
142042340,2sleep10-21swapper/112:51:231
106891340,1ptp4l401ktimersoftd/311:43:343
106891340,1ptp4l401ktimersoftd/311:43:343
21926993326,4cyclictest41-21ksoftirqd/312:35:583
2191899339,21cyclictest24657-21munin-node09:20:372
2191899332,5cyclictest15166-21apt-get12:20:502
2191899331,3cyclictest16856-21ssh14:34:002
21918993313,17cyclictest27816-21sh14:11:132
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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