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2026-07-04 - 21:35
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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 Jul 04, 2026 12:44:34)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
140089911537,71cyclictest0-21swapper/009:22:570
140089911121,10cyclictest0-21swapper/011:33:000
140119910943,35cyclictest20879-21diskmemload11:59:401
140119910943,35cyclictest20879-21diskmemload11:59:401
14008991064,28cyclictest15544-21runrttasks09:42:450
140089910636,52cyclictest0-21swapper/012:22:470
14008991053,24cyclictest14010-21latency_hist06:57:470
14008991053,24cyclictest14010-21latency_hist06:57:470
140119910488,9cyclictest0-21swapper/110:18:211
140119910488,9cyclictest0-21swapper/110:18:211
14008991044,26cyclictest14555-21ps12:23:150
14008991044,26cyclictest14555-21ps12:23:150
140089910435,50cyclictest0-21swapper/011:17:490
14008991033,30cyclictest27904-21expr10:58:010
14008991025,35cyclictest27453-21latency_hist10:02:460
140089910242,52cyclictest1871-21latency_hist12:02:460
140089910242,52cyclictest1871-21latency_hist12:02:460
140089910242,52cyclictest0-21swapper/012:03:050
140089910242,52cyclictest0-21swapper/012:03:050
14008991024,23cyclictest32294-21find11:04:420
140089910240,56cyclictest15572-21latency_hist10:37:450
14008991014,29cyclictest10778-21apt-get11:23:460
14008991014,29cyclictest10778-21apt-get11:23:460
140089910042,52cyclictest1-21systemd09:19:480
14014999976,16cyclictest19362-21latency_hist07:12:472
14014999974,19cyclictest10352-21apt-key11:22:462
1400899993,41cyclictest28267-21grep09:08:210
1400899993,36cyclictest6338-21latency_hist08:12:450
1400899993,30cyclictest31639-21unixbench_singl10:08:200
14008999915,30cyclictest277-21dbus-daemon09:07:450
14008999915,30cyclictest277-21dbus-daemon09:07:450
1400899984,38cyclictest24502-21ssh09:57:470
1400899984,38cyclictest24502-21ssh09:57:470
1400899984,32cyclictest12535-21latency_hist09:37:450
1400899984,24cyclictest2674-21taskset10:14:430
1400899983,27cyclictest28977-21ssh11:53:070
14008999828,7cyclictest0-21swapper/006:58:190
14008999824,13cyclictest0-21swapper/011:38:200
1400899975,32cyclictest8461-21fschecks_time08:18:060
14008999726,8cyclictest15350irq/295-2188000.ethernet11:28:060
14008999646,44cyclictest17460-21sshd10:53:490
1400899964,35cyclictest27973-21chrt11:51:510
1400899964,33cyclictest12421-21grep08:28:200
1400899964,33cyclictest12421-21grep08:28:200
1400899964,27cyclictest25883-21latency_hist07:32:440
14008999638,53cyclictest13996-21cyclictest12:13:010
1400899963,32cyclictest352-21runrttasks11:16:080
1400899963,31cyclictest22598-21/usr/sbin/munin11:43:250
1400899963,31cyclictest21174-21/usr/sbin/munin08:58:230
1400899963,26cyclictest17182-21grep08:43:190
1400899953,28cyclictest18107-21fschecks_time07:08:050
14008999529,8cyclictest0-21swapper/007:23:170
14008999514,26cyclictest19451-21ntp_kernel_pll_10:43:130
14008999514,26cyclictest19451-21ntp_kernel_pll_10:43:130
14011999454,34cyclictest29402-21kworker/u17:2+events_unbound10:07:431
1400899945,28cyclictest1465-21/usr/sbin/munin11:08:040
1400899944,32cyclictest31208-21fschecks_time07:48:050
1400899943,33cyclictest30156-21runrttasks10:07:300
1400899943,27cyclictest7092-21cpuspeed10:23:010
1400899943,25cyclictest18166-21grep08:48:060
1400899943,25cyclictest18166-21grep08:48:060
14008999430,59cyclictest0-21swapper/009:13:150
14008999430,59cyclictest0-21swapper/009:13:150
1400899942,29cyclictest1-21systemd08:57:440
14008999421,9cyclictest0-21swapper/007:53:170
1400899935,41cyclictest6861-21/usr/sbin/munin09:28:000
1400899935,29cyclictest16121-21fschecks_count10:38:040
1400899935,29cyclictest16121-21fschecks_count10:38:040
1400899934,25cyclictest9969-21/usr/sbin/munin10:28:120
1400899934,25cyclictest9969-21/usr/sbin/munin10:28:120
1400899934,25cyclictest352-21runrttasks08:38:170
14008999337,49cyclictest0-21swapper/010:52:460
14008999337,49cyclictest0-21swapper/010:52:460
14008999335,51cyclictest0-21swapper/007:13:210
1400899933,32cyclictest30817-21latency_hist07:47:460
14008999326,8cyclictest0-21swapper/007:58:180
125092936,71sleep10-21swapper/106:52:511
125092936,71sleep10-21swapper/106:52:511
14014999267,14cyclictest0-21swapper/209:23:402
1401199923,76cyclictest0-21swapper/107:17:581
1400899924,29cyclictest16652-21grep09:43:200
1400899924,29cyclictest16652-21grep09:43:200
1400899924,26cyclictest4289-21/usr/sbin/munin10:18:050
1400899924,26cyclictest4289-21/usr/sbin/munin10:18:050
1400899924,26cyclictest10438-21/usr/sbin/munin08:23:160
1400899924,26cyclictest10438-21/usr/sbin/munin08:23:160
1400899923,34cyclictest13175-21cstates08:33:010
1400899923,30cyclictest21997-21grep07:18:200
1400899923,26cyclictest15884-21munin-node07:02:500
14008999226,8cyclictest0-21swapper/008:03:150
1400899922,34cyclictest5316-21fschecks_time12:08:050
14014999168,13cyclictest0-21swapper/211:52:472
14014999167,14cyclictest0-21swapper/207:58:042
1401199913,50cyclictest0-21swapper/107:07:451
1400899914,29cyclictest26773-21cat07:33:170
1400899914,29cyclictest26773-21cat07:33:170
1400899914,17cyclictest20879-21diskmemload09:48:190
1400899913,32cyclictest6745-21df08:13:010
1400899913,31cyclictest27739-21sort07:37:530
1400899913,31cyclictest27739-21sort07:37:530
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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