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2026-03-13 - 14:35
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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
Characteristics of the highest latencies:
System rackcslot2.osadl.org (updated Fri Mar 13, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
205042990,0sleep020507-21grep22:39:400
382627157,9sleep10-21swapper/119:06:021
385226956,9sleep00-21swapper/019:06:190
177092650,0sleep10-21swapper/122:35:381
223442640,0sleep10-21swapper/121:59:041
152092550,2sleep1100450irq/109-eth1-tx22:33:201
146392450,1sleep1231ktimersoftd/121:47:551
4330993328,4cyclictest24-21ksoftirqd/123:29:361
4330993029,1cyclictest24-21ksoftirqd/123:59:391
433099293,3cyclictest91rcu_preempt00:09:361
4329992924,4cyclictest8947-21awk23:54:240
4329992810,0cyclictest0-21swapper/022:09:130
433099275,3cyclictest91rcu_preempt00:23:261
4330992725,1cyclictest24-21ksoftirqd/100:06:311
433099263,5cyclictest91rcu_preempt21:51:151
4330992623,2cyclictest24-21ksoftirqd/122:09:391
433099261,5cyclictest91rcu_preempt23:26:161
4330992610,12cyclictest0-21swapper/119:39:361
4329992619,3cyclictest0-21swapper/023:19:420
433099253,3cyclictest91rcu_preempt23:05:441
4330992523,2cyclictest0-21swapper/123:35:031
4330992522,3cyclictest0-21swapper/100:15:111
4330992519,6cyclictest0-21swapper/122:57:091
4330992512,7cyclictest231ktimersoftd/121:39:411
4330992510,0cyclictest0-21swapper/119:45:141
433099250,5cyclictest91rcu_preempt22:22:151
4329992525,0cyclictest0-21swapper/021:39:440
4329992521,3cyclictest19400-21apache200:16:160
4329992517,4cyclictest802-21apache220:57:320
4329992510,8cyclictest0-21swapper/020:51:180
433099242,1cyclictest91rcu_preempt22:45:421
4330992419,2cyclictest24-21ksoftirqd/122:17:301
4330992418,6cyclictest0-21swapper/119:24:441
4330992418,6cyclictest0-21swapper/119:24:441
4330992412,9cyclictest0-21swapper/121:31:451
433099240,10cyclictest0-21swapper/123:14:371
4329992416,4cyclictest19400-21apache223:03:260
4329992410,8cyclictest0-21swapper/023:06:200
4329992410,11cyclictest0-21swapper/000:33:160
433099238,10cyclictest0-21swapper/121:15:201
4330992321,2cyclictest0-21swapper/120:54:361
4330992321,2cyclictest0-21swapper/120:02:321
4330992319,3cyclictest19426-21apache222:44:041
4330992319,3cyclictest0-21swapper/123:40:191
433099230,7cyclictest0-21swapper/122:24:411
4329992316,2cyclictest21812-21rm00:13:420
4329992315,3cyclictest7-21ksoftirqd/000:29:180
4329992312,8cyclictest30106-21ssh22:53:370
4329992310,7cyclictest18414-21fschecks_count21:09:380
433099225,13cyclictest0-21swapper/121:59:361
4330992221,1cyclictest231ktimersoftd/119:34:551
4330992219,2cyclictest3921-21ssh23:45:571
4330992219,2cyclictest2011-21df22:59:361
4330992218,2cyclictest744-21snmpd20:19:541
4330992210,5cyclictest0-21swapper/122:04:411
4330992210,5cyclictest0-21swapper/120:39:361
4330992210,1cyclictest0-21swapper/120:47:361
4329992222,0cyclictest0-21swapper/000:35:090
4329992216,5cyclictest341-21ssh22:12:560
4329992210,7cyclictest0-21swapper/000:01:570
4329992210,6cyclictest0-21swapper/021:35:550
432999220,21cyclictest0-21swapper/023:27:010
433099219,8cyclictest0-21swapper/121:04:461
433099216,11cyclictest0-21swapper/120:59:431
433099214,8cyclictest7001-21/usr/sbin/munin19:14:411
433099213,2cyclictest91rcu_preempt22:50:041
4330992119,1cyclictest0-21swapper/121:27:041
4330992118,2cyclictest27862-21/usr/sbin/munin20:09:371
4330992118,2cyclictest2641-21ssh00:30:361
4330992118,2cyclictest17914-21diskmemload21:35:241
4330992118,1cyclictest24-21ksoftirqd/100:36:191
4330992117,3cyclictest0-21swapper/123:49:361
4330992113,3cyclictest19830-21ssh21:10:221
433099211,1cyclictest91rcu_preempt00:26:311
4330992110,5cyclictest0-21swapper/120:49:361
432999214,10cyclictest15712-21munin-run19:39:250
432999212,2cyclictest0-21swapper/021:45:290
4329992120,0cyclictest81ktimersoftd/023:54:410
432999211,9cyclictest0-21swapper/019:39:440
4329992119,1cyclictest100250irq/107-eth1-rx21:59:420
4329992112,4cyclictest0-21swapper/023:41:250
4329992111,5cyclictest11023-21diskmemload23:11:060
4329992110,6cyclictest0-21swapper/023:32:390
4329992110,4cyclictest0-21swapper/022:23:510
433099203,12cyclictest0-21swapper/121:19:381
4330992019,1cyclictest0-21swapper/123:09:281
4330992018,2cyclictest0-21swapper/123:23:341
4330992017,2cyclictest774-21apache_volume20:24:361
4330992017,2cyclictest10485-21grep23:54:451
4330992017,1cyclictest0-21swapper/119:21:271
432999202,10cyclictest0-21swapper/021:24:440
4329992010,7cyclictest0-21swapper/021:29:350
4329992010,5cyclictest0-21swapper/021:54:400
4329992010,3cyclictest0-21swapper/023:14:390
4329992010,2cyclictest0-21swapper/019:59:360
4329992010,1cyclictest0-21swapper/022:38:540
4329992010,1cyclictest0-21swapper/021:49:290
432999200,2cyclictest0-21swapper/022:15:060
82921910,0sleep00-21swapper/020:24:380
433099199,9cyclictest2717-21apache_volume20:29:371
4330991917,1cyclictest4842-21df20:34:381
4330991913,2cyclictest0-21swapper/119:29:411
432999196,9cyclictest0-21swapper/022:29:240
4329991916,3cyclictest0-21swapper/019:30:060
4329991916,1cyclictest19400-21apache222:49:040
4329991910,5cyclictest0-21swapper/000:22:430
4329991910,4cyclictest0-21swapper/019:19:340
4329991910,3cyclictest0-21swapper/020:34:370
4329991910,2cyclictest0-21swapper/021:04:390
432999190,16cyclictest0-21swapper/020:17:180
433099188,4cyclictest24-21ksoftirqd/119:53:161
433099185,7cyclictest0-21swapper/120:04:411
4330991810,3cyclictest0-21swapper/120:14:351
4329991815,2cyclictest802-21apache222:57:090
4329991814,4cyclictest0-21swapper/020:44:100
4329991812,3cyclictest4327-21cyclictest21:16:240
4329991810,5cyclictest0-21swapper/023:34:480
4329991810,3cyclictest0-21swapper/019:14:440
4329991810,2cyclictest0-21swapper/022:30:560
432999180,9cyclictest0-21swapper/019:44:430
2906921810,0sleep00-21swapper/020:13:280
2113021810,0sleep00-21swapper/019:50:390
433099173,7cyclictest0-21swapper/119:54:441
432999172,5cyclictest0-21swapper/000:04:420
4329991711,3cyclictest19426-21apache220:23:420
432999171,11cyclictest0-21swapper/020:29:450
4329991710,4cyclictest0-21swapper/019:09:400
4329991710,3cyclictest0-21swapper/021:19:440
4329991710,3cyclictest0-21swapper/020:59:370
4329991710,0cyclictest0-21swapper/023:44:430
4330991614,1cyclictest4413-21cat19:09:361
432999163,9cyclictest0-21swapper/019:24:420
432999163,9cyclictest0-21swapper/019:24:420
432999163,4cyclictest0-21swapper/020:04:360
4329991616,0cyclictest0-21swapper/019:54:430
4329991614,2cyclictest107250irq/99-eth320:45:000
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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