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2025-11-21 - 12:47
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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 rack1slot3.osadl.org (updated Fri Nov 21, 2025 00:43:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
238462499130,12cyclictest2518728-21taskset00:35:013
238462499130,12cyclictest0-21swapper/323:15:123
238462499129,1cyclictest0-21swapper/319:10:133
238462499129,1cyclictest0-21swapper/300:15:153
2384624991211,0cyclictest0-21swapper/321:35:013
238462499121,0cyclictest0-21swapper/323:25:123
238462499120,1cyclictest0-21swapper/300:00:143
238462499120,11cyclictest69450irq/121-eno122:55:213
238462499120,11cyclictest0-21swapper/321:45:203
238462499120,11cyclictest0-21swapper/321:25:123
238462499120,11cyclictest0-21swapper/321:20:143
238462499120,11cyclictest0-21swapper/321:10:013
238462499120,11cyclictest0-21swapper/320:55:183
238462499120,11cyclictest0-21swapper/320:45:153
238462499120,11cyclictest0-21swapper/320:25:193
238462499120,11cyclictest0-21swapper/320:05:123
238462499120,11cyclictest0-21swapper/300:00:003
238462499110,10cyclictest69450irq/121-eno123:10:203
238462499110,10cyclictest69450irq/121-eno122:50:033
238462499110,10cyclictest69450irq/121-eno100:20:143
238462499110,10cyclictest69450irq/121-eno100:13:093
238462499110,10cyclictest0-21swapper/323:20:223
238462499110,10cyclictest0-21swapper/322:30:133
238462499110,10cyclictest0-21swapper/320:05:013
238462499110,10cyclictest0-21swapper/319:20:003
238462499110,10cyclictest0-21swapper/300:05:123
238462499110,0cyclictest0-21swapper/321:55:143
238462499110,0cyclictest0-21swapper/321:10:193
238462499110,0cyclictest0-21swapper/320:10:253
238462499110,0cyclictest0-21swapper/300:25:133
238462499109,0cyclictest0-21swapper/320:30:183
238462499109,0cyclictest0-21swapper/319:45:113
2384624991010,0cyclictest69450irq/121-eno123:30:123
2384624991010,0cyclictest69450irq/121-eno122:19:423
2384624991010,0cyclictest69450irq/121-eno121:15:133
2384624991010,0cyclictest69450irq/121-eno121:00:143
2384624991010,0cyclictest0-21swapper/323:45:123
2384624991010,0cyclictest0-21swapper/323:40:183
2384624991010,0cyclictest0-21swapper/321:51:123
2384624991010,0cyclictest0-21swapper/321:40:113
2384624991010,0cyclictest0-21swapper/320:40:193
2384624991010,0cyclictest0-21swapper/319:50:013
238462499100,9cyclictest69450irq/121-eno122:40:153
238462499100,9cyclictest69450irq/121-eno122:35:253
238462499100,9cyclictest69450irq/121-eno122:05:203
238462499100,9cyclictest69450irq/121-eno119:30:143
238462499100,9cyclictest69450irq/121-eno119:20:163
238462499100,9cyclictest69450irq/121-eno100:35:183
238462499100,9cyclictest0-21swapper/322:00:183
23846249999,0cyclictest69450irq/121-eno123:08:583
23846249999,0cyclictest69450irq/121-eno122:12:403
23846249999,0cyclictest0-21swapper/323:00:113
23846249999,0cyclictest0-21swapper/321:30:153
23846249988,0cyclictest69450irq/121-eno122:48:423
23846249988,0cyclictest0-21swapper/320:15:213
23846249986,0cyclictest0-21swapper/319:40:153
23846249980,7cyclictest0-21swapper/323:40:013
23846249977,0cyclictest69450irq/121-eno123:54:103
23846249977,0cyclictest69450irq/121-eno120:35:123
23846249976,0cyclictest0-21swapper/319:35:133
23846249970,6cyclictest69450irq/121-eno122:25:153
23846249970,6cyclictest69450irq/121-eno120:22:543
23846249970,6cyclictest69450irq/121-eno119:55:133
23846249966,0cyclictest0-21swapper/322:20:213
23846249954,0cyclictest0-21swapper/319:25:163
2384431253,1sleep10-21swapper/119:09:241
2382569251,2sleep30-21swapper/319:05:013
2392610243,1sleep02948619-21kworker/0:0+events19:25:520
23846249940,3cyclictest2424145-21chrt20:50:033
2384392242,1sleep20-21swapper/219:08:532
2383573241,1sleep00-21swapper/019:05:170
2493306230,1sleep22493323-21apt-get23:35:012
2489256230,1sleep12489547-21df23:25:161
2456932230,1sleep02456944-21apt-get22:10:020
2444723230,2sleep22444633-21/usr/sbin/munin21:40:142
2398703230,1sleep02398722-21apt-get19:45:000
2518702220,1sleep22518716-21munin-run00:35:012
2514103220,1sleep20-21swapper/200:21:162
2505882220,0sleep00-21swapper/000:02:370
2501420220,0sleep10-21swapper/123:50:251
2500712220,1sleep22500875-21ntpq23:50:182
2496372220,1sleep10-21swapper/123:40:171
2482818220,0sleep00-21swapper/023:10:060
2476290221,1sleep02476491-21latency_hist22:55:010
2476214220,0sleep20-21swapper/222:54:232
2472883220,1sleep00-21swapper/022:45:200
2466595220,1sleep02466749-21grep22:30:190
2465049220,1sleep00-21swapper/022:25:310
2445534220,1sleep02445705-21/usr/sbin/munin21:40:200
2444264220,1sleep22444265-21sshd21:38:542
2439259220,1sleep00-21swapper/021:25:190
2438366220,1sleep12438406-21aten_r1power_cu21:25:121
2432098220,1sleep22432129-21http21:10:122
2430980220,1sleep10-21swapper/121:05:191
2424640220,1sleep02424775-21memory20:50:170
2423286220,1sleep22423536-21users20:45:222
2411236220,0sleep00-21swapper/020:15:190
2410466220,1sleep22410482-21munin-run20:15:012
2385215220,1sleep22385299-21irqstats19:10:172
2519722210,0sleep10-21swapper/100:35:201
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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