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2026-03-26 - 14:30
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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 Thu Mar 26, 2026 00:44:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
95679911633,41cyclictest0-21swapper/022:45:220
95819910783,16cyclictest9556-21cyclictest23:09:282
9581991053,75cyclictest22925-21rm23:00:102
9581991053,75cyclictest22925-21rm23:00:102
95679910534,28cyclictest21680-21ssh23:50:510
95679910437,28cyclictest1750-21seq00:12:110
95679910231,37cyclictest29742-21irqstats00:04:540
95679910231,37cyclictest29742-21irqstats00:04:540
95679910035,26cyclictest27512-21sh00:00:190
84702998,63sleep18561-21load19:00:011
9567999836,24cyclictest17728-21irqstats23:44:540
9567999834,32cyclictest994-21apt-get22:24:420
9567999834,32cyclictest994-21apt-get22:24:420
9567999834,26cyclictest7686-21ssh00:21:580
9567999833,29cyclictest24427-21apt-get22:09:530
9567999833,29cyclictest24427-21apt-get22:09:530
9567999832,26cyclictest23504-21seq19:44:490
9567999830,31cyclictest19676-21snmpd21:17:130
9567999830,31cyclictest19676-21snmpd21:17:130
9567999824,44cyclictest22529-21ssh22:05:450
9567999824,44cyclictest22529-21ssh22:05:450
9581999770,18cyclictest9162-21fschecks_time20:39:502
9567999737,23cyclictest31064-21/usr/sbin/munin22:19:570
9567999728,31cyclictest32410-21/usr/sbin/munin23:15:000
9567999727,28cyclictest29547-21idleruntime-cro20:04:290
9567999727,28cyclictest29547-21idleruntime-cro20:04:290
9567999632,27cyclictest18698-21rm22:53:090
9567999628,27cyclictest15288-21apt-get19:19:590
9567999628,27cyclictest15288-21apt-get19:19:590
9567999535,26cyclictest11245-21rm22:40:220
9567999535,22cyclictest8317-21ssh23:29:400
9567999534,29cyclictest28125-21ssh23:08:410
9567999533,27cyclictest15195-21ssh21:54:420
9567999533,23cyclictest20446-21ssh21:09:550
9567999532,25cyclictest12206-21xargs23:35:040
9567999436,21cyclictest29423-21ssh22:17:290
9567999434,23cyclictest29249-21memory23:09:550
9567999433,30cyclictest9544-21ssh22:39:010
9567999433,25cyclictest21118-21runrttasks22:56:270
9567999433,25cyclictest21118-21runrttasks22:56:270
9567999432,28cyclictest11502-21ssh00:29:160
9567999432,28cyclictest11502-21ssh00:29:160
9567999431,27cyclictest3620-21rm23:20:390
9567999430,27cyclictest0-21swapper/022:32:030
9567999429,31cyclictest23332-21/usr/sbin/munin23:54:380
9567999429,31cyclictest23332-21/usr/sbin/munin23:54:380
9581999356,13cyclictest181rcu_preempt22:20:052
9567999334,29cyclictest18804-21rm21:06:570
9567999334,29cyclictest18804-21rm21:06:570
9567999334,28cyclictest5283-21rm23:24:380
9567999334,26cyclictest884-21fschecks_time20:14:520
9567999334,21cyclictest28751-21apt-get21:24:470
9567999334,21cyclictest28751-21apt-get21:24:470
9567999331,26cyclictest0-21swapper/021:20:020
9567999331,22cyclictest4471-21ssh21:36:220
9567999327,31cyclictest14332-21awk23:39:400
9567999235,18cyclictest20477-21/usr/sbin/munin19:34:530
9567999232,35cyclictest19861-21taskset22:01:410
9567999232,22cyclictest11857-21ssh00:29:340
9567999231,24cyclictest13805-21rm21:51:390
9567999231,24cyclictest10719-21ssh21:46:250
9567999231,24cyclictest10719-21ssh21:46:250
9567999228,30cyclictest32405-21awk20:10:080
9567999228,27cyclictest23355-21/usr/sbin/munin23:00:360
9567999145,36cyclictest2929-21apt-get00:14:410
9567999145,36cyclictest2929-21apt-get00:14:410
9567999132,27cyclictest7155-21ssh21:40:300
9567999128,28cyclictest13204-21taskset20:51:210
9581999064,9cyclictest181rcu_preempt22:06:192
9581999064,9cyclictest181rcu_preempt22:06:192
9581999055,11cyclictest181rcu_preempt20:14:492
9573999012,60cyclictest13270-21apt-get22:44:491
9567999030,23cyclictest11022-21seq19:08:320
9567999020,36cyclictest0-21swapper/020:09:300
9567999020,36cyclictest0-21swapper/020:09:300
9581998953,13cyclictest181rcu_preempt22:39:592
958199893,74cyclictest24427-21apt-get22:09:452
958199893,74cyclictest24427-21apt-get22:09:452
9567998935,19cyclictest8621-21cron20:39:290
9567998932,25cyclictest1627-21ssh21:31:520
93972896,64sleep00-21swapper/019:03:590
9581998851,13cyclictest181rcu_preempt00:14:522
9581998851,13cyclictest181rcu_preempt00:14:522
9567998833,19cyclictest5385-21cron20:29:290
9567998833,19cyclictest5385-21cron20:29:290
9567998831,19cyclictest16883-21/usr/sbin/munin19:24:530
9567998831,19cyclictest16883-21/usr/sbin/munin19:24:530
9567998827,29cyclictest14073-21awk19:15:030
943628812,47sleep29465-21munin-run19:04:302
9567998732,19cyclictest2356-21df20:19:480
9567998731,22cyclictest12986-21taskset19:12:280
9581998651,13cyclictest181rcu_preempt21:05:522
9581998651,13cyclictest181rcu_preempt21:05:522
9581998642,8cyclictest181rcu_preempt00:20:032
9581998559,9cyclictest15488-21ssh22:48:132
9581998548,16cyclictest181rcu_preempt21:15:212
9581998548,16cyclictest181rcu_preempt21:15:212
9581998544,18cyclictest181rcu_preempt20:59:322
9581998544,18cyclictest181rcu_preempt20:59:322
9581998542,11cyclictest181rcu_preempt20:34:392
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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