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2026-03-29 - 07:39
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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 Sun Mar 29, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
5164991223,47cyclictest5354-21apt-get19:04:300
5164991223,47cyclictest5354-21apt-get19:04:300
5164991133,35cyclictest5155-21cyclictest19:04:210
51649911033,69cyclictest0-21swapper/023:59:350
51649910928,7cyclictest0-21swapper/023:54:190
5164991083,52cyclictest5284-21apt-get00:30:040
4041210711,69sleep14051-21/usr/sbin/munin18:59:471
51649910543,55cyclictest352-21runrttasks19:30:020
5164991053,33cyclictest25677-21/usr/sbin/munin23:14:470
5164991053,32cyclictest28492-21latency_hist20:14:200
5164991052,25cyclictest16362-21/usr/sbin/munin22:04:410
51649910520,25cyclictest9511-21latency_hist21:54:170
5164991043,27cyclictest31562-21find22:29:510
51649910428,20cyclictest24603-21cstates21:24:350
51649910427,72cyclictest0-21swapper/000:09:530
5164991042,37cyclictest3872-21/usr/sbin/munin21:44:450
5164991042,37cyclictest3872-21/usr/sbin/munin21:44:450
51649910337,59cyclictest28917-21fschecks_time00:14:410
5164991033,31cyclictest21743-21grep21:19:380
5164991033,31cyclictest21743-21grep21:19:380
5164991033,22cyclictest352-21runrttasks22:22:520
51649910236,60cyclictest544-21cron21:34:220
5164991023,34cyclictest1166-21tune2fs21:39:390
5164991023,28cyclictest14343-21unixbench_singl22:54:550
5164991023,24cyclictest31686-21ntp_states23:24:480
51649910229,9cyclictest0-21swapper/022:34:430
51649910227,9cyclictest0-21swapper/021:15:370
51649910136,59cyclictest27429-21/usr/sbin/munin21:29:370
51649910134,57cyclictest25346-21latency_hist20:04:210
5164991012,28cyclictest17302-21/usr/sbin/munin19:39:520
5164991012,28cyclictest17302-21/usr/sbin/munin19:39:520
51889910042,11cyclictest0-21swapper/219:09:202
51889910042,11cyclictest0-21swapper/219:09:202
51649910035,57cyclictest0-21swapper/020:24:530
5164991003,36cyclictest6465-21cut20:44:490
5164991003,36cyclictest6465-21cut20:44:490
5164991003,36cyclictest352-21runrttasks23:33:270
5164991003,36cyclictest352-21runrttasks23:33:270
5164991003,34cyclictest14017-21cat19:29:210
5164991003,31cyclictest12088-21cron21:04:170
5164991003,31cyclictest12088-21cron21:04:170
5164991003,30cyclictest11108-21fschecks_count19:19:570
51649910025,11cyclictest0-21swapper/023:34:380
5164991002,32cyclictest4096-21ssh00:27:320
51649910022,11cyclictest0-21swapper/020:49:530
5164999939,53cyclictest5970-21sh22:41:230
5164999939,53cyclictest5970-21sh22:41:230
516499993,31cyclictest352-21runrttasks23:43:110
516499993,31cyclictest352-21runrttasks23:43:110
516499993,31cyclictest2617-21/usr/sbin/munin20:34:520
516499992,34cyclictest25307-21ssh00:09:180
516499992,34cyclictest22413-21fschecks_time19:54:410
516499992,26cyclictest16816-21grep22:59:470
516499992,26cyclictest16816-21grep22:59:470
516499992,23cyclictest22698-21/usr/sbin/munin23:09:450
516499992,23cyclictest22698-21/usr/sbin/munin23:09:450
5164999910,26cyclictest12109-21diskmemload21:04:560
516499984,31cyclictest29967-21modprobe20:19:170
5164999839,53cyclictest20380-21latency_hist19:49:200
5164999839,53cyclictest20380-21latency_hist19:49:200
5164999835,8cyclictest18936-21rm23:58:080
516499983,31cyclictest1791-21timerandwakeup20:29:530
5164999829,7cyclictest0-21swapper/000:20:190
5164999815,24cyclictest15729-21fschecks_time21:09:410
5164999815,24cyclictest15729-21fschecks_time21:09:410
516499973,36cyclictest13442-21/usr/sbin/munin21:59:420
516499973,33cyclictest7554-21fschecks_count22:44:390
5164999733,11cyclictest9307-21fschecks_count20:54:390
516499973,29cyclictest20639-21cstates19:49:370
516499973,28cyclictest10333-21cstates21:54:560
516499972,29cyclictest19170-21acpi23:04:270
5164999719,22cyclictest1-21systemd20:44:190
516499963,32cyclictest352-21runrttasks22:19:150
516499963,32cyclictest13344-21latency_hist23:49:200
516499962,35cyclictest17241-21latency_hist19:39:210
516499962,31cyclictest28641-21rm22:24:510
5164999535,53cyclictest0-21swapper/022:14:200
5164999525,13cyclictest0-21swapper/020:19:390
516499952,36cyclictest9439-21latency19:14:430
516499952,36cyclictest9439-21latency19:14:430
516499952,33cyclictest25567-21cut20:04:400
516499943,25cyclictest352-21runrttasks23:20:580
516499943,25cyclictest352-21runrttasks23:20:580
516499933,31cyclictest7374-21/usr/sbin/munin19:09:460
516499932,25cyclictest10448-21expr22:49:360
516499932,25cyclictest10448-21expr22:49:360
5188999148,11cyclictest5155-21cyclictest23:19:552
5188999148,11cyclictest5155-21cyclictest23:19:552
5180999068,15cyclictest4031-21sh22:39:171
5180999068,15cyclictest12109-21diskmemload23:59:401
5180998967,16cyclictest352-21runrttasks23:49:521
371228913,50sleep23763-21sort18:59:362
5188998868,13cyclictest17225-21latency_hist19:39:212
5188998753,21cyclictest0-21swapper/223:54:402
518899874,51cyclictest5284-21apt-get00:29:362
518899872,52cyclictest1693-21ls23:29:352
518899872,52cyclictest1693-21ls23:29:352
518099876,57cyclictest31-21ksoftirqd/120:55:171
5188998646,15cyclictest20918-21ssh22:12:172
5180998615,62cyclictest301ktimers/123:29:171
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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