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2026-05-09 - 20:40
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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 rackbslot7.osadl.org (updated Sat May 09, 2026 12:44:36)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2775213915,83sleep22795-21apt-get07:01:322
2835211411,74sleep02869-21unin-run07:01:340
30369910045,49cyclictest23256-21timerandwakeup09:22:082
303699983,51cyclictest6522-21apt-get11:36:432
3036999654,35cyclictest30061-21ssh12:16:312
3036999654,35cyclictest30061-21ssh12:16:312
3036999649,40cyclictest9030-21acpi10:46:412
3036999649,40cyclictest9030-21acpi10:46:412
3036999649,40cyclictest9030-21acpi10:46:412
3036999649,40cyclictest9030-21acpi10:46:412
3036999568,21cyclictest3253-21cstates10:37:202
3036999548,40cyclictest0-21swapper/212:02:072
3036999548,40cyclictest0-21swapper/212:02:072
3036999366,18cyclictest4154-21fschecks_count12:26:532
3036999231,50cyclictest0-21swapper/209:16:522
3028999137,48cyclictest26732-21latency_hist11:16:331
302899913,27cyclictest4513-21ntp_offset12:27:001
3036999049,33cyclictest0-21swapper/210:32:592
3036999049,33cyclictest0-21swapper/210:32:592
3036999047,36cyclictest10085-21diskmemload11:44:442
3028999041,42cyclictest352-21runrttasks10:20:521
302899902,34cyclictest19571-21ssh11:03:131
3028998939,43cyclictest20341-21ssh10:11:541
3028998939,43cyclictest20341-21ssh10:11:541
302899893,28cyclictest16656-21latency_hist07:41:341
302899893,28cyclictest16656-21latency_hist07:41:341
302899892,32cyclictest12384-21latency_hist11:46:341
3016998971,12cyclictest1-21systemd11:51:310
3036998848,33cyclictest0-21swapper/209:57:092
302899886,70cyclictest28265-21apt-get08:17:011
3028998835,43cyclictest0-21swapper/108:01:341
302899883,29cyclictest30132-21fschecks_time08:21:551
302899882,32cyclictest7002-21unixbench_singl10:42:081
302899882,32cyclictest7002-21unixbench_singl10:42:081
302899882,32cyclictest7002-21unixbench_singl10:42:081
302899882,32cyclictest7002-21unixbench_singl10:42:081
305099872,67cyclictest2970-21chrt10:36:493
3036998740,42cyclictest0-21swapper/208:24:552
302899872,34cyclictest28143-21cat09:31:341
302899872,34cyclictest28143-21cat09:31:341
3016998768,13cyclictest9769-21fschecks_count11:41:540
303699864,23cyclictest507-21/usr/sbin/munin11:27:072
303699864,23cyclictest507-21/usr/sbin/munin11:27:072
3036998641,36cyclictest0-21swapper/211:06:332
303699862,38cyclictest12418-21fschecks_time10:51:532
3028998639,40cyclictest30302-21fschecks_time11:21:541
3028998634,43cyclictest0-21swapper/111:40:101
3028998634,43cyclictest0-21swapper/107:06:521
302899863,29cyclictest8711-21/usr/sbin/munin08:57:041
302899863,29cyclictest8711-21/usr/sbin/munin08:57:041
3028998632,46cyclictest0-21swapper/112:06:311
3028998632,46cyclictest0-21swapper/112:06:311
302899862,63cyclictest3002-21ssh10:36:531
287528612,49sleep12878-21munin-run07:01:351
3036998548,30cyclictest0-21swapper/208:06:532
3036998536,43cyclictest0-21swapper/208:16:332
3036998536,43cyclictest0-21swapper/208:16:332
3036998532,45cyclictest0-21swapper/210:48:102
303699852,31cyclictest25351-21sh09:26:472
303699852,31cyclictest25351-21sh09:26:472
3028998534,43cyclictest0-21swapper/110:33:041
3028998534,43cyclictest0-21swapper/110:33:041
302899853,31cyclictest13771-21/usr/sbin/munin10:02:071
302899853,31cyclictest13771-21/usr/sbin/munin10:02:071
3028998529,48cyclictest0-21swapper/108:36:311
302899852,33cyclictest23069-21mailstats09:22:051
302899852,23cyclictest8671-21latency_hist08:56:351
303699847,21cyclictest30027-21apt-get11:21:472
3036998448,31cyclictest13801-21kworker/u18:0-rpciod12:17:162
3036998442,35cyclictest0-21swapper/207:52:082
3036998440,38cyclictest15214-21cpuspeed10:56:472
3036998439,38cyclictest0-21swapper/208:36:562
3036998439,38cyclictest0-21swapper/208:36:562
3036998437,41cyclictest0-21swapper/210:31:362
303699843,38cyclictest26089-21cstates10:21:482
3036998427,47cyclictest0-21swapper/208:17:482
302899843,34cyclictest30404-21seq10:28:101
302899843,33cyclictest15110-21ssh11:51:291
302899843,29cyclictest21303-21idleruntime-cro07:56:311
302899843,28cyclictest8533-21latency_hist07:16:341
3028998430,47cyclictest0-21swapper/110:56:591
302899842,32cyclictest2908-21grep09:42:081
3028998413,28cyclictest7006-21latency_hist08:51:341
3036998342,33cyclictest0-21swapper/207:31:342
3036998341,34cyclictest0-21swapper/209:12:052
3036998341,34cyclictest0-21swapper/209:12:052
3036998340,35cyclictest0-21swapper/209:56:342
3036998334,40cyclictest0-21swapper/210:11:492
3036998334,40cyclictest0-21swapper/210:11:492
303699833,28cyclictest352-21runrttasks11:16:392
303699833,28cyclictest352-21runrttasks11:16:392
303699833,23cyclictest21046-21/usr/sbin/munin11:06:422
303699833,21cyclictest23375-21grep08:01:532
3036998330,46cyclictest0-21swapper/209:46:432
3036998330,46cyclictest0-21swapper/209:46:432
302899834,23cyclictest30365-21/usr/sbin/munin12:17:041
302899833,62cyclictest10168-21ssh10:48:151
302899833,24cyclictest18378-21cpuspeed07:46:491
3028998329,46cyclictest0-21swapper/109:32:011
3028998327,48cyclictest0-21swapper/110:07:441
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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