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2026-04-15 - 13:47
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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 792 highest latencies:
System rackcslot2.osadl.org (updated Wed Apr 15, 2026 00:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
268552760,1sleep10-21swapper/120:19:241
3144226947,17sleep10-21swapper/119:06:171
77592660,1sleep10-21swapper/123:59:311
3169126654,8sleep00-21swapper/019:08:540
194942650,1sleep00-21swapper/022:46:060
7562620,0sleep10-21swapper/100:39:051
31897993737,0cyclictest0-21swapper/121:31:311
31897993210,0cyclictest0-21swapper/123:17:521
31897993010,19cyclictest0-21swapper/100:20:321
31897992810,10cyclictest0-21swapper/120:48:311
31896992810,0cyclictest0-21swapper/021:35:240
31896992727,0cyclictest0-21swapper/023:57:180
31896992720,6cyclictest12850-21ssh21:52:170
31897992612,12cyclictest28781-21kworker/1:021:39:041
3189699261,24cyclictest0-21swapper/023:09:300
3189699260,25cyclictest0-21swapper/023:52:440
2235022610,0sleep00-21swapper/000:23:420
31897992512,5cyclictest0-21swapper/119:19:211
3189699256,15cyclictest0-21swapper/019:34:220
3189799248,8cyclictest0-21swapper/122:19:221
3189799242,2cyclictest0-21swapper/123:52:151
31897992419,3cyclictest23021-21ssh23:35:481
31897992410,2cyclictest0-21swapper/121:49:211
3189699245,10cyclictest0-21swapper/019:09:260
3189699245,10cyclictest0-21swapper/019:09:260
31896992416,7cyclictest19629-21apache222:17:160
31896992410,11cyclictest0-21swapper/021:39:230
3189699240,0cyclictest0-21swapper/023:42:230
31897992321,1cyclictest19629-21apache221:59:491
31897992316,4cyclictest19613-21apache223:00:091
31897992312,5cyclictest636-21nscd00:17:551
31897992310,7cyclictest0-21swapper/122:24:461
3189799230,19cyclictest0-21swapper/121:56:161
31896992319,3cyclictest19613-21apache219:47:080
31896992316,5cyclictest744-21snmpd19:22:130
31896992310,6cyclictest0-21swapper/020:19:260
323922210,1sleep10-21swapper/123:09:241
31897992217,1cyclictest0-21swapper/121:47:591
31897992210,8cyclictest0-21swapper/123:56:141
3189699223,10cyclictest24820-21/usr/sbin/munin21:24:230
31896992222,0cyclictest81ktimersoftd/022:06:320
31896992210,4cyclictest0-21swapper/022:59:480
1567622210,0sleep10-21swapper/123:25:441
3189799215,11cyclictest0-21swapper/121:09:311
31897992120,1cyclictest0-21swapper/122:10:391
31897992120,0cyclictest0-21swapper/120:18:271
31897992118,2cyclictest19629-21apache221:21:191
31897992113,5cyclictest0-21swapper/100:08:581
31897992113,2cyclictest1199-21runrttasks19:30:171
31897992112,5cyclictest0-21swapper/122:39:321
31897992111,6cyclictest0-21swapper/122:14:231
31897992110,7cyclictest0-21swapper/119:12:291
31897992110,7cyclictest0-21swapper/119:12:291
31896992120,1cyclictest31927-21/usr/sbin/munin22:19:260
31896992120,1cyclictest19629-21apache221:18:510
31896992117,3cyclictest81ktimersoftd/000:34:150
31896992117,2cyclictest6778-1kworker/0:2H19:41:180
31896992116,0cyclictest16062-21kworker/u4:022:39:320
31896992114,4cyclictest81ktimersoftd/021:59:260
31896992112,6cyclictest6367-21diskmemload22:28:520
31896992112,5cyclictest100250irq/107-eth1-rx22:55:180
3189799206,6cyclictest0-21swapper/123:44:231
3189799203,3cyclictest0-21swapper/100:24:211
31897992020,0cyclictest10213-21grep19:34:301
31897992010,3cyclictest0-21swapper/120:49:281
3189799200,15cyclictest0-21swapper/121:24:281
3189699205,8cyclictest28046-21apache_processe21:29:230
3189699205,10cyclictest9118-21chrt21:47:080
31896992012,5cyclictest0-21swapper/023:29:190
31896992010,9cyclictest0-21swapper/000:04:560
31896992010,6cyclictest0-21swapper/023:19:200
31896992010,5cyclictest0-21swapper/000:17:240
31896992010,4cyclictest0-21swapper/022:49:210
31896992010,4cyclictest0-21swapper/020:54:270
31896992010,1cyclictest0-21swapper/021:20:230
31896992010,0cyclictest0-21swapper/019:32:350
172622010,0sleep00-21swapper/023:06:500
3189799194,10cyclictest13097-21diskmemload23:04:211
31897991918,1cyclictest19629-21apache222:07:281
31897991918,0cyclictest0-21swapper/100:29:521
31897991910,3cyclictest0-21swapper/123:40:091
31897991910,2cyclictest0-21swapper/121:07:101
3189799190,1cyclictest104832sleep120:59:301
3189699196,7cyclictest0-21swapper/020:49:220
31896991916,2cyclictest16805-21/usr/sbin/munin19:54:270
3189699191,2cyclictest0-21swapper/022:35:410
31896991910,6cyclictest0-21swapper/023:35:090
31896991910,6cyclictest0-21swapper/000:24:220
31896991910,5cyclictest0-21swapper/022:29:300
31896991910,4cyclictest0-21swapper/023:24:180
31896991910,4cyclictest0-21swapper/023:14:240
31896991910,4cyclictest0-21swapper/020:29:220
31896991910,0cyclictest0-21swapper/022:09:530
3189699190,15cyclictest0-21swapper/023:59:210
3095221910,0sleep00-21swapper/023:47:390
3189799185,9cyclictest0-21swapper/119:59:231
3189799183,8cyclictest0-21swapper/121:39:251
3189799183,10cyclictest0-21swapper/119:14:231
3189799182,9cyclictest0-21swapper/123:19:261
3189799182,5cyclictest21216-21df22:49:221
31897991810,3cyclictest0-21swapper/121:18:071
31897991810,3cyclictest0-21swapper/100:09:281
3189799180,8cyclictest0-21swapper/120:39:271
3189699184,7cyclictest0-21swapper/019:49:210
3189699184,10cyclictest14516-21sh21:54:260
31896991814,3cyclictest19629-21apache200:33:500
31896991810,5cyclictest100250irq/107-eth1-rx19:14:310
31896991810,4cyclictest0-21swapper/021:04:230
31896991810,4cyclictest0-21swapper/020:14:230
31896991810,4cyclictest0-21swapper/020:09:210
31896991810,2cyclictest0-21swapper/021:09:220
31896991810,2cyclictest0-21swapper/020:24:260
3189699180,16cyclictest22016-21pidof20:04:450
3189799172,8cyclictest0-21swapper/120:29:291
31897991717,0cyclictest0-21swapper/122:34:261
31897991710,6cyclictest0-21swapper/120:24:301
31897991710,5cyclictest0-21swapper/119:53:351
31897991710,4cyclictest0-21swapper/122:29:311
31897991710,3cyclictest0-21swapper/123:29:211
31897991710,3cyclictest0-21swapper/122:54:291
31897991710,3cyclictest0-21swapper/119:24:211
31897991710,2cyclictest0-21swapper/120:54:261
31897991710,1cyclictest0-21swapper/119:54:211
3189699176,9cyclictest0-21swapper/020:59:230
31896991710,5cyclictest0-21swapper/019:59:270
1950821710,0sleep10-21swapper/122:46:101
3189799162,7cyclictest0-21swapper/120:34:231
31897991610,3cyclictest0-21swapper/119:44:221
31897991610,0cyclictest0-21swapper/120:07:251
3189699164,6cyclictest0-21swapper/020:44:230
3189699161,7cyclictest0-21swapper/020:34:240
3189699160,0cyclictest4947-21kworker/0:200:09:240
3189799153,8cyclictest11437-21/usr/sbin/munin19:39:251
31897991510,4cyclictest0-21swapper/120:13:141
31896991510,2cyclictest0-21swapper/019:24:110
31896991414,0cyclictest0-21swapper/020:39:250
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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