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2026-06-17 - 20:49
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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 Wed Jun 17, 2026 12:44:30)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
27911213011,20sleep10-21swapper/106:57:401
28168991203,83cyclictest20365-21apt-get12:09:181
28168991203,83cyclictest20365-21apt-get12:09:181
28168991133,85cyclictest19167-21ssh10:19:111
196532980,6sleep30-21swapper/310:19:593
2816499973,65cyclictest20365-21apt-get12:09:100
2816499973,65cyclictest20365-21apt-get12:09:100
28164999729,43cyclictest0-21swapper/011:14:390
28173999557,31cyclictest28154-21cyclictest10:44:162
2709629413,54sleep227123-21/usr/sbin/munin06:54:312
28168999360,9cyclictest181rcu_preempt09:05:331
2817399924,41cyclictest11119-21/usr/sbin/munin11:54:032
2817399914,43cyclictest1332-21latency_hist10:43:562
2817399914,43cyclictest1332-21latency_hist10:43:562
2817399914,40cyclictest25597-21/usr/sbin/munin11:24:112
28173999139,45cyclictest0-21swapper/211:34:092
2817399894,43cyclictest14752-21open_files11:59:232
2817399894,43cyclictest14752-21open_files11:59:232
28173998940,42cyclictest0-21swapper/209:19:312
2817399893,34cyclictest15209-21unixbench_multi07:54:312
2817399892,32cyclictest30153-21cron08:43:542
2816899893,50cyclictest30347-21apt-get09:44:111
2817399885,42cyclictest8451-21switchtime10:54:282
2817399884,29cyclictest877-21/usr/sbin/munin09:49:302
2817399884,29cyclictest877-21/usr/sbin/munin09:49:302
2817399883,31cyclictest18886-21modprobe08:08:542
2817399883,31cyclictest18886-21modprobe08:08:542
2817399883,31cyclictest16397-21latency_hist11:08:562
2817399883,31cyclictest16397-21latency_hist11:08:562
2817399883,29cyclictest6096-21fschecks_count09:04:122
2817399882,31cyclictest15910-21apt-get10:14:042
2816499885,59cyclictest9144-21apt-get09:09:240
2817399875,43cyclictest13319-21latency_hist11:03:562
2817399875,40cyclictest352-21runrttasks11:47:592
2817399874,32cyclictest23329-21/usr/sbin/munin12:14:182
28173998742,38cyclictest0-21swapper/208:59:272
28173998740,41cyclictest7753-21latency_hist07:33:572
2817399873,33cyclictest27792-21grep08:34:282
2817399873,32cyclictest4460-21latency_hist07:23:562
2817399872,32cyclictest25873-21cut08:29:172
2817399869,38cyclictest2579-21diskmemload12:19:122
2817399864,33cyclictest30049-21munin-node07:04:052
2817399864,31cyclictest25552-21latency_hist11:23:572
2817399863,35cyclictest30275-21grep12:24:302
2817399863,34cyclictest31796-21awk08:48:532
2817399863,34cyclictest31796-21awk08:48:532
2817399863,34cyclictest21396-21fschecks_time09:29:142
2817399863,32cyclictest12006-21unixbench_singl07:44:302
2817399863,31cyclictest30012-21latency_hist07:03:582
2817399863,30cyclictest22951-21grep08:19:262
28173998626,49cyclictest0-21swapper/207:24:182
2817399862,34cyclictest18071-21sed12:04:292
2817399862,31cyclictest14930-21latency_hist09:18:562
2817399862,30cyclictest19971-21sh10:20:062
28173998615,31cyclictest21477-21diskmemload11:16:332
28164998642,28cyclictest31151-21switchtime08:44:270
28164998642,28cyclictest31151-21switchtime08:44:270
2817399854,32cyclictest16624-21/usr/sbin/munin11:09:122
2817399854,30cyclictest30049-21munin-node09:09:042
28173998541,36cyclictest0-21swapper/211:39:292
28173998535,43cyclictest17827-21kworker/u17:1-xprtiod09:24:282
2817399853,32cyclictest9135-21cat11:49:322
2817399853,32cyclictest25462-21latency_hist08:28:562
2817399852,35cyclictest25591-21grep10:29:172
2817399852,35cyclictest25591-21grep10:29:172
2817399852,31cyclictest1471-21fschecks_time08:54:152
2817399852,31cyclictest1471-21fschecks_time08:54:152
28173998522,9cyclictest0-21swapper/210:38:052
28173998515,22cyclictest31685-21diskmemload09:45:092
28164998567,12cyclictest26686-21unixbench_singl11:24:340
28173998463,14cyclictest535-21threads07:09:282
2817399844,39cyclictest352-21runrttasks11:29:062
2817399844,34cyclictest10878-21grep10:04:292
2817399844,32cyclictest22105-21/usr/sbin/munin10:24:192
2817399844,30cyclictest19322-21entropy08:09:152
2817399844,30cyclictest19322-21entropy08:09:152
2817399843,31cyclictest9943-21ntp_kernel_pll_07:39:212
2817399843,31cyclictest9943-21ntp_kernel_pll_07:39:212
2817399843,31cyclictest20751-21/usr/sbin/munin08:14:272
2817399843,31cyclictest16103-21fschecks_count07:59:162
2817399843,31cyclictest12947-21fschecks_time07:49:152
28168998461,12cyclictest0-21swapper/111:24:341
28164998441,29cyclictest28154-21cyclictest11:02:000
2817399834,34cyclictest22093-21runrttasks12:11:152
2817399834,34cyclictest22093-21runrttasks12:11:152
2817399833,32cyclictest2724-21modprobe07:18:532
2817399833,31cyclictest352-21runrttasks09:35:052
2817399833,28cyclictest8043-21fschecks_count07:34:152
2817399833,28cyclictest8043-21fschecks_count07:34:152
2817399832,32cyclictest352-21runrttasks10:03:042
2817399832,32cyclictest352-21runrttasks10:03:042
2817399832,32cyclictest27397-21grep09:39:152
280022839,42sleep028029-21munin-run06:58:540
2817399823,31cyclictest32046-21/usr/sbin/munin08:49:312
2817399823,29cyclictest14856-21sh10:11:522
2817399823,29cyclictest14856-21sh10:11:522
28173998218,30cyclictest4438-21needreboot09:54:222
28164998260,16cyclictest1-21systemd09:43:560
2816899813,43cyclictest7471-21latency_hist10:53:561
2816899813,43cyclictest7471-21latency_hist10:53:561
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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