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2025-11-19 - 00:04
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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 Tue Nov 18, 2025 12:43:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
254221670,5sleep31233099cyclictest09:00:323
3077221610,4sleep11231799cyclictest12:02:571
2220921480,4sleep11231799cyclictest09:40:331
2557821440,3sleep11231799cyclictest08:40:351
1773911000,4ptp4l401ktimersoftd/308:14:273
101632846,15sleep10-21swapper/108:10:311
192782610,1sleep20-21swapper/213:43:352
1231099591,4cyclictest1256-21runrttasks10:04:370
44952570,1sleep00-21swapper/010:10:390
1232199513,17cyclictest5553-21snmp_o5powerctl12:50:552
177391490,2ptp4l2165-21kworker/3:112:32:313
13932490,1sleep00-21swapper/011:27:430
1232199492,17cyclictest17231-21ssh11:45:542
1232199492,12cyclictest19637-21awk08:25:472
1231099490,4cyclictest1760-21runrttasks10:22:430
1232199484,12cyclictest11031-21ssh12:58:172
1231099480,3cyclictest1760-21runrttasks11:38:030
1232199472,15cyclictest16707-21latency12:25:452
1232199471,10cyclictest28261-21awk10:40:572
1232199461,18cyclictest13640-21snmp_o5powerctl09:20:482
1232199460,13cyclictest27374-21latency_hist08:45:182
1232199460,13cyclictest1479-21cat13:25:382
1231099460,5cyclictest1760-21runrttasks13:43:450
1213724620,16sleep09-21ksoftirqd/008:14:250
1232199451,14cyclictest16488-21irqstats08:20:422
1232199446,6cyclictest0-21swapper/209:55:412
1231099440,3cyclictest4900-21ssh13:28:380
1232199434,6cyclictest19811-21/usr/sbin/munin11:50:542
1232199431,20cyclictest17857-21cat09:30:402
1232199431,14cyclictest7796-21snmp_o5powerctl13:30:532
1232199421,9cyclictest31947-21df_inode10:00:372
1231099421,4cyclictest23058-21ssh11:54:340
177391410,16ptp4l401ktimersoftd/312:00:363
1231099410,3cyclictest6538-21sh11:34:240
275432400,1sleep00-21swapper/010:40:460
1233099406,12cyclictest11163-21ssh13:35:423
1233099404,12cyclictest28197-21ssh12:40:373
1231099402,31cyclictest11410-21apt-get11:40:360
1231099401,3cyclictest15863-21sh13:05:010
1231099400,4cyclictest31003-21sed11:25:220
177391390,1ptp4l401ktimersoftd/312:14:453
177391390,1ptp4l401ktimersoftd/311:17:373
1232199391,9cyclictest18769-21df10:30:352
1232199390,8cyclictest31583-21diskstats11:25:382
1231099392,6cyclictest7682-21apt-get12:15:350
1231099390,4cyclictest28850-21ps08:45:390
1231099390,4cyclictest13523-21wc08:15:420
177391380,1ptp4l401ktimersoftd/313:31:023
177391380,1ptp4l401ktimersoftd/312:52:163
177391380,1ptp4l401ktimersoftd/311:51:123
177391380,1ptp4l401ktimersoftd/311:28:403
177391380,1ptp4l401ktimersoftd/311:09:503
177391380,1ptp4l401ktimersoftd/310:47:433
177391380,0ptp4l401ktimersoftd/310:33:403
12330993820,15cyclictest41-21ksoftirqd/309:50:553
1232199384,6cyclictest24087-21ssh13:15:172
1232199381,7cyclictest22854-21ps09:40:402
1231099381,9cyclictest29330-21apt-get09:55:340
1231099380,4cyclictest8042-21grep10:55:580
1231099380,4cyclictest2785-21expr09:00:350
1231099380,4cyclictest27533-21sh12:00:230
1231099380,3cyclictest28754-21latency_hist13:20:250
1231099380,3cyclictest14524-21sed09:25:200
177391370,1ptp4l401ktimersoftd/312:29:563
177391370,1ptp4l401ktimersoftd/312:22:493
177391370,1ptp4l401ktimersoftd/312:17:583
177391370,1ptp4l401ktimersoftd/309:21:493
177391370,0ptp4l401ktimersoftd/313:17:043
177391370,0ptp4l401ktimersoftd/310:28:513
12330993711,5cyclictest46750irq/99-ens3-TxR13:25:583
1232199376,8cyclictest25781-21diskmemload12:35:582
1232199370,15cyclictest5171-21snmp_o5powerctl12:10:542
1231099379,25cyclictest19944-21switchtime10:30:490
1231099372,4cyclictest19031-21apt-get11:10:360
12310993711,23cyclictest6646-21unixbench_singl09:05:500
1231099370,4cyclictest27806-21latency_hist12:40:240
1231099370,4cyclictest17192-21sh11:45:510
1231099370,4cyclictest13152-21taskset11:02:380
1231099370,3cyclictest26652-21latency_hist09:50:200
1231099370,3cyclictest22094-21seq13:11:090
1231099370,3cyclictest16492-21ssh10:26:010
1231099370,3cyclictest11727-21chrt09:17:110
1231099370,3cyclictest11727-21chrt09:17:110
177391360,1ptp4l401ktimersoftd/310:18:323
177391360,1ptp4l401ktimersoftd/308:20:433
177391360,0ptp4l401ktimersoftd/313:07:063
177391360,0ptp4l401ktimersoftd/311:14:223
177391360,0ptp4l401ktimersoftd/308:44:563
1232199365,6cyclictest9412-21ssh10:58:422
1231099369,24cyclictest854-21missed_timers12:05:450
1231099362,7cyclictest1654-21apt-get10:05:330
1231099361,30cyclictest0-21swapper/010:35:360
12310993612,20cyclictest8101-21unixbench_multi13:30:550
12310993610,23cyclictest14734-21/usr/sbin/munin11:05:410
1231099360,5cyclictest13635-21ssh12:21:000
1231099360,4cyclictest17676-21turbostat08:25:180
1231099360,4cyclictest17176-21snmp_o5powerctl12:25:520
1231099360,3cyclictest24351-21wc09:45:200
177391350,1ptp4l401ktimersoftd/312:55:493
177391350,1ptp4l401ktimersoftd/310:41:523
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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