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2026-04-14 - 23:17
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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 Tue Apr 14, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2621121348,17sleep00-21swapper/006:59:400
26647991172,47cyclictest20098-21apt-get11:23:292
26647991153,52cyclictest5858-21ssh10:59:182
266389911137,32cyclictest6045-21apt-get11:53:210
266389911137,32cyclictest6045-21apt-get11:53:210
266389910935,31cyclictest3067-21apt-get11:48:260
266389910435,30cyclictest12617-21ssh12:03:410
266389910234,30cyclictest14499-21apt-get11:13:290
26638991022,88cyclictest20098-21apt-get11:23:260
266389910215,71cyclictest22913-21apt-get10:33:290
266389910132,22cyclictest32708-21find07:18:450
2664299993,36cyclictest22468-21/usr/sbin/munin09:38:331
2664799987,43cyclictest24232-21ssh12:23:362
26638999825,48cyclictest31910-21latency_hist08:58:150
26647999734,51cyclictest0-21swapper/211:33:152
26647999734,51cyclictest0-21swapper/211:33:152
26647999734,10cyclictest0-21swapper/211:58:152
26647999734,10cyclictest0-21swapper/211:58:152
2663899973,67cyclictest5526-21apt-get10:58:290
26638999731,29cyclictest1078-21diskmemload09:23:290
26638999723,32cyclictest31440-21unixbench_singl07:13:490
26642999644,16cyclictest26089-21fschecks_count10:38:331
26642999644,16cyclictest26089-21fschecks_count10:38:331
26638999622,34cyclictest7254-21latency_hist09:13:150
26638999621,38cyclictest26472-21cat11:33:150
26638999621,38cyclictest26472-21cat11:33:150
26647999560,29cyclictest7994-21ntp_offset09:13:422
26638999532,28cyclictest29004-21ssh10:43:290
26638999532,22cyclictest18235-21/usr/sbin/munin11:18:470
26638999532,22cyclictest18235-21/usr/sbin/munin11:18:470
2664799943,27cyclictest9257-21/usr/sbin/munin11:58:332
26638999466,18cyclictest8436-21sh09:13:500
26638999465,23cyclictest12608-21latency_hist07:58:140
26638999457,30cyclictest19529-21apt-get09:33:430
26647999373,13cyclictest298-21in:imuxsock10:38:112
2664799932,33cyclictest5567-21wc07:33:542
2664799932,33cyclictest5567-21wc07:33:542
2663899937,73cyclictest3093-21apt-get07:28:270
26638999330,31cyclictest1078-21diskmemload09:53:330
26638999330,31cyclictest1078-21diskmemload09:53:330
26638999321,24cyclictest29453-21latency_hist11:38:140
26647999242,40cyclictest0-21swapper/207:28:242
26647999223,26cyclictest22732-21sshd09:38:352
26638999255,25cyclictest9547-21apt-get07:48:240
26647999168,16cyclictest26751-21latency_hist07:03:172
26647999140,42cyclictest0-21swapper/209:08:152
26647999140,42cyclictest0-21swapper/209:08:152
26647999136,8cyclictest0-21swapper/209:34:132
26647999134,9cyclictest0-21swapper/209:13:122
26647999134,51cyclictest0-21swapper/208:28:482
2664799913,38cyclictest8153-21fschecks_count07:43:332
2664799913,38cyclictest8153-21fschecks_count07:43:332
2664799913,36cyclictest3011-21latency_hist07:28:162
2664799913,32cyclictest30521-21ls11:38:472
2664799913,27cyclictest1750350ssh09:29:072
26647999128,57cyclictest0-21swapper/211:18:482
26647999128,57cyclictest0-21swapper/211:18:482
26647999124,11cyclictest0-21swapper/210:03:342
2664799912,35cyclictest11679-21sh11:08:342
2664799912,34cyclictest1995-21latency_hist10:53:112
26638999161,21cyclictest298-21in:imuxsock08:33:340
26638999124,25cyclictest21151-21ssh12:18:330
26638999124,25cyclictest21151-21ssh12:18:330
26638999122,30cyclictest1467-21ssh09:03:280
26638999122,30cyclictest1467-21ssh09:03:280
26638999122,26cyclictest26151-21uname09:43:450
26638999122,26cyclictest26151-21uname09:43:450
2647829116,49sleep126503-21munin-plugin-st07:03:121
2664799903,36cyclictest13397-21processes07:58:442
2664799902,33cyclictest1078-21diskmemload11:48:282
26638999035,41cyclictest16508-21sshd09:28:340
26638999032,24cyclictest19056-21rm12:13:490
26638999028,21cyclictest0-21swapper/011:08:490
26638999024,27cyclictest0-21swapper/008:28:340
26638999023,30cyclictest29207-21fschecks_time08:48:350
26638999023,30cyclictest29207-21fschecks_time08:48:350
26638999022,27cyclictest6654-21rm10:05:470
26638999015,27cyclictest0-21swapper/012:13:130
2665199893,43cyclictest17377-21chrt08:13:113
2665199893,43cyclictest17377-21chrt08:13:113
2664799893,36cyclictest13046-21grep12:03:472
2664799893,35cyclictest2188-21sh09:58:332
2664799893,32cyclictest28403-21/usr/sbin/munin09:48:402
2664799893,28cyclictest17148-21/usr/sbin/munin10:23:382
26647998928,8cyclictest0-21swapper/208:03:492
2664799892,34cyclictest25437-21modprobe08:38:112
2664799892,33cyclictest14389-21ssh10:18:422
26638998958,20cyclictest16007-21apt-get08:08:290
26638998958,20cyclictest16007-21apt-get08:08:290
26638998927,27cyclictest11781-21ssh09:19:430
26638998927,27cyclictest11781-21ssh09:19:430
26638998926,22cyclictest8040-21cstates07:43:290
26638998926,22cyclictest8040-21cstates07:43:290
26638998918,37cyclictest15603-21ssh10:20:530
26647998834,7cyclictest0-21swapper/210:53:422
2664799883,35cyclictest22774-21cmp10:33:162
2664799883,35cyclictest21173-21fschecks_count12:18:332
2664799883,35cyclictest21173-21fschecks_count12:18:332
2664799883,33cyclictest32520-21/usr/sbin/munin11:43:322
2664799883,33cyclictest32520-21/usr/sbin/munin11:43:322
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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