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2026-04-21 - 06:48
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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 Tue Apr 21, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
755126754,9sleep10-21swapper/119:05:441
752026653,9sleep00-21swapper/019:05:230
173042370,2sleep0805799cyclictest20:54:270
8057993110,21cyclictest0-21swapper/020:40:540
805899282,5cyclictest29959-21ntp_states20:04:261
805899280,10cyclictest29595-21perl00:24:211
805899272,3cyclictest28692-21/usr/sbin/munin23:34:241
8057992727,0cyclictest0-21swapper/021:56:510
8057992717,2cyclictest7-21ksoftirqd/019:34:070
805899262,23cyclictest0-21swapper/121:41:451
8057992617,1cyclictest11207-21idleruntime23:09:210
805799261,24cyclictest0-21swapper/022:53:440
8058992521,3cyclictest1108-21apache222:38:511
805899250,8cyclictest0-21swapper/123:29:241
8057992523,1cyclictest8429-21ssh23:49:320
8057992521,3cyclictest1108-21apache222:55:070
8057992516,6cyclictest20153-21ssh22:35:540
8057992510,7cyclictest0-21swapper/000:14:170
8057992510,10cyclictest0-21swapper/019:22:410
8058992424,0cyclictest0-21swapper/123:13:521
805899240,11cyclictest0-21swapper/120:09:201
8057992423,1cyclictest0-21swapper/023:17:040
8057992421,2cyclictest3938-21if_eth323:44:210
8057992411,7cyclictest0-21swapper/022:14:240
8057992411,7cyclictest0-21swapper/022:14:240
805899234,2cyclictest0-21swapper/123:25:251
805899232,9cyclictest0-21swapper/123:39:531
805899231,6cyclictest0-21swapper/123:16:031
8058992310,5cyclictest0-21swapper/119:38:421
8057992321,1cyclictest0-21swapper/022:59:570
8057992318,3cyclictest1085-21apache200:23:050
8057992310,6cyclictest0-21swapper/021:09:180
805899224,10cyclictest0-21swapper/121:29:191
8058992222,0cyclictest0-21swapper/100:36:531
8058992212,5cyclictest0-21swapper/121:51:201
8058992211,4cyclictest0-21swapper/120:46:201
8058992210,3cyclictest0-21swapper/119:39:271
8058992210,2cyclictest13837-21ssh22:27:301
805799223,10cyclictest0-21swapper/023:24:260
8057992216,6cyclictest0-21swapper/021:03:540
8057992213,5cyclictest100450irq/109-eth1-tx20:09:190
805799221,2cyclictest0-21swapper/022:45:360
805799221,19cyclictest11240-21apache_accesses22:24:200
805799221,13cyclictest0-21swapper/019:14:260
8057992210,4cyclictest0-21swapper/021:31:170
8057992210,2cyclictest0-21swapper/020:44:190
694022210,0sleep10-21swapper/122:18:141
694022210,0sleep10-21swapper/122:18:141
805899214,12cyclictest0-21swapper/122:19:211
8058992110,7cyclictest0-21swapper/122:42:001
8058992110,5cyclictest0-21swapper/123:00:121
8058992110,3cyclictest0-21swapper/121:44:141
805899210,1cyclictest31355-21chrt22:52:031
805799214,8cyclictest0-21swapper/020:34:200
805799214,10cyclictest0-21swapper/022:39:200
8057992115,5cyclictest1108-21apache223:22:330
8057992114,5cyclictest1108-21apache200:29:170
8057992113,3cyclictest1085-21apache221:49:020
8057992110,4cyclictest0-21swapper/023:54:290
8057992110,4cyclictest0-21swapper/021:04:270
8057992110,3cyclictest0-21swapper/021:51:090
8057992110,3cyclictest0-21swapper/000:02:180
805899203,8cyclictest0-21swapper/122:29:281
805899202,10cyclictest0-21swapper/120:59:221
8058992020,0cyclictest8055-21cyclictest21:20:231
8058992018,1cyclictest705-21ntpd19:09:261
8058992017,2cyclictest0-21swapper/119:44:191
8058992016,2cyclictest705-21ntpd19:54:271
8058992013,5cyclictest19402-21vmstat23:19:281
8058992013,5cyclictest0-21swapper/121:59:271
8058992010,5cyclictest0-21swapper/119:14:221
8058992010,4cyclictest0-21swapper/122:09:191
805799204,8cyclictest0-21swapper/021:14:290
805799203,9cyclictest0-21swapper/021:34:270
8057992013,1cyclictest0-21swapper/020:16:150
8057992010,4cyclictest0-21swapper/021:25:190
8057992010,4cyclictest0-21swapper/019:44:070
8057992010,3cyclictest0-21swapper/019:59:190
303922010,0sleep00-21swapper/022:12:250
2497022010,0sleep10-21swapper/121:58:211
1677622010,0sleep10-21swapper/119:29:271
805899195,12cyclictest0-21swapper/100:04:231
805899193,9cyclictest0-21swapper/120:49:181
8058991915,2cyclictest705-21ntpd20:14:091
8058991915,2cyclictest0-21swapper/121:34:521
8058991912,4cyclictest1085-21apache222:45:451
8058991910,7cyclictest0-21swapper/123:50:521
8058991910,5cyclictest0-21swapper/121:09:561
8058991910,5cyclictest0-21swapper/100:11:281
8058991910,4cyclictest0-21swapper/121:24:281
8058991910,3cyclictest0-21swapper/123:54:311
8058991910,3cyclictest0-21swapper/100:19:081
8058991910,2cyclictest0-21swapper/121:14:571
805799195,8cyclictest0-21swapper/000:09:190
805799194,9cyclictest0-21swapper/019:24:300
805799194,7cyclictest32638-21ssh23:39:230
8057991911,7cyclictest18993-21grep00:04:270
8057991910,9cyclictest0-21swapper/021:43:280
8057991910,6cyclictest0-21swapper/022:33:060
8057991910,5cyclictest0-21swapper/019:34:180
8057991910,4cyclictest0-21swapper/000:34:300
8057991910,3cyclictest0-21swapper/023:04:180
805899187,6cyclictest0-21swapper/100:14:171
8058991817,1cyclictest1108-21apache221:06:151
8058991816,1cyclictest8055-21cyclictest23:44:541
8058991816,1cyclictest0-21swapper/120:24:181
8058991816,1cyclictest0-21swapper/120:24:181
8058991816,0cyclictest15740-21sh00:00:161
8058991810,1cyclictest0-21swapper/123:04:461
805899180,10cyclictest0-21swapper/119:24:241
8057991814,3cyclictest8055-21cyclictest22:23:190
8057991810,5cyclictest0-21swapper/020:49:260
8057991810,2cyclictest0-21swapper/021:21:110
805899175,5cyclictest917-21/usr/sbin/munin00:29:251
8058991715,2cyclictest1085-21apache222:05:541
8058991712,4cyclictest0-21swapper/122:57:171
805899170,1cyclictest0-21swapper/119:53:161
805799173,8cyclictest0-21swapper/023:29:190
8057991714,3cyclictest107250irq/99-eth322:05:160
8057991711,3cyclictest1108-21apache222:00:020
8057991710,3cyclictest0-21swapper/000:28:340
805899167,6cyclictest0-21swapper/120:29:211
805899162,8cyclictest0-21swapper/119:59:211
805899162,5cyclictest0-21swapper/120:39:231
8058991610,3cyclictest0-21swapper/120:54:231
805799163,5cyclictest0-21swapper/019:44:260
805799161,4cyclictest0-21swapper/019:54:200
8057991612,4cyclictest0-21swapper/020:33:580
8057991610,6cyclictest0-21swapper/020:24:180
8057991610,6cyclictest0-21swapper/020:24:180
8057991610,6cyclictest0-21swapper/020:07:220
8057991610,2cyclictest0-21swapper/019:09:190
8057991610,1cyclictest0-21swapper/020:19:190
805799160,8cyclictest0-21swapper/019:49:220
805799160,6cyclictest1199-21runrttasks23:34:450
805899154,4cyclictest3663-21/usr/sbin/munin20:19:271
8058991510,4cyclictest100150irq/106-eth1-rx20:35:581
8058991510,3cyclictest0-21swapper/119:22:111
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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