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2026-05-11 - 23:07
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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 100 highest latencies:
System rackcslot2.osadl.org (updated Mon May 11, 2026 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139627058,8sleep00-21swapper/007:07:280
3217126552,8sleep10-21swapper/107:04:031
174602640,0sleep00-21swapper/011:54:130
1724993434,0cyclictest0-21swapper/111:06:581
1724992929,0cyclictest0-21swapper/109:26:221
1724992910,14cyclictest0-21swapper/108:34:081
1724992810,14cyclictest100250irq/107-eth1-rx11:18:041
1723992810,7cyclictest0-21swapper/011:00:210
1724992710,15cyclictest0-21swapper/111:02:291
172499270,22cyclictest0-21swapper/111:10:401
1723992710,8cyclictest0-21swapper/010:40:170
1723992610,0cyclictest0-21swapper/012:20:580
1723992519,4cyclictest11532-21apache211:23:510
1723992516,6cyclictest1721-21cyclictest11:35:030
172399250,16cyclictest0-21swapper/009:29:090
1724992422,1cyclictest31235-21processes10:49:171
1724992422,1cyclictest0-21swapper/111:44:141
1724992419,4cyclictest11532-21apache208:33:101
1724992412,10cyclictest100150irq/106-eth1-rx11:38:451
1723992423,1cyclictest0-21swapper/007:43:580
1723992410,4cyclictest0-21swapper/011:50:560
1723992410,14cyclictest0-21swapper/012:34:480
1723992410,10cyclictest0-21swapper/010:31:180
1724992323,0cyclictest0-21swapper/109:12:561
1724992310,6cyclictest15903-21ssh10:29:341
1724992310,5cyclictest0-21swapper/110:47:291
172399234,12cyclictest0-21swapper/011:14:140
172399231,6cyclictest0-21swapper/010:18:240
172499223,9cyclictest0-21swapper/108:59:151
172499222,9cyclictest0-21swapper/110:55:181
1724992221,0cyclictest231ktimersoftd/111:21:371
1724992221,0cyclictest11568-21kworker/1:208:16:141
1724992218,3cyclictest11532-21apache208:11:241
1724992214,3cyclictest636-21nscd10:06:091
1724992211,4cyclictest0-21swapper/107:24:111
1724992210,8cyclictest0-21swapper/110:43:391
172499220,10cyclictest0-21swapper/109:48:091
1723992222,0cyclictest0-21swapper/012:24:430
1723992220,1cyclictest10320-21fw_packets08:54:120
1723992213,6cyclictest81ktimersoftd/011:25:190
1723992210,5cyclictest0-21swapper/011:09:390
1723992210,5cyclictest0-21swapper/010:00:270
1723992210,5cyclictest0-21swapper/009:56:570
1723992210,3cyclictest0-21swapper/009:44:020
1723992210,3cyclictest0-21swapper/008:04:180
1723992210,0cyclictest0-21swapper/009:42:180
1388122210,0sleep10-21swapper/110:28:221
172499214,16cyclictest0-21swapper/109:58:331
1724992119,1cyclictest11532-21apache209:17:451
1724992119,1cyclictest0-21swapper/110:38:011
1724992117,3cyclictest636-21nscd11:57:331
1724992114,6cyclictest11532-21apache210:13:311
1724992114,4cyclictest0-21swapper/107:51:101
1724992110,4cyclictest0-21swapper/110:19:081
1724992110,4cyclictest0-21swapper/108:04:101
172399216,13cyclictest0-21swapper/008:29:120
172399212,4cyclictest3504-21latency_hist07:13:580
1723992117,3cyclictest802-21apache209:15:250
1723992113,3cyclictest81ktimersoftd/011:42:160
1723992110,7cyclictest636-21nscd10:37:350
1723992110,7cyclictest0-21swapper/010:51:420
1723992110,5cyclictest0-21swapper/010:26:350
1723992110,3cyclictest0-21swapper/010:09:120
2828222010,0sleep00-21swapper/010:04:210
221942200,0sleep122193-21sed11:59:191
172499203,8cyclictest0-21swapper/109:19:231
172499203,12cyclictest0-21swapper/108:49:141
1724992020,0cyclictest0-21swapper/112:29:291
1724992016,4cyclictest11532-21apache212:13:141
1724992016,3cyclictest30078-21apache207:09:111
1724992016,3cyclictest1721-21cyclictest11:40:551
1724992010,6cyclictest0-21swapper/111:51:241
1724992010,6cyclictest0-21swapper/111:24:191
1724992010,4cyclictest0-21swapper/112:34:151
1724992010,4cyclictest0-21swapper/112:16:011
172499200,19cyclictest0-21swapper/112:25:461
172399208,7cyclictest0-21swapper/008:59:090
172399205,9cyclictest0-21swapper/011:04:200
1723992017,1cyclictest1721-21cyclictest08:16:370
1723992010,5cyclictest0-21swapper/011:46:000
1723992010,4cyclictest0-21swapper/008:24:100
1597922010,0sleep00-21swapper/012:33:330
172499194,7cyclictest0-21swapper/107:14:141
1724991918,1cyclictest11562-21apache211:31:511
1724991913,4cyclictest100250irq/107-eth1-rx09:59:161
1724991912,4cyclictest11532-21apache209:39:361
1724991910,5cyclictest0-21swapper/107:54:091
1724991910,4cyclictest0-21swapper/109:38:011
172399194,8cyclictest0-21swapper/012:09:190
172399193,15cyclictest14886-21kworker/u4:012:14:100
172399192,8cyclictest0-21swapper/011:59:100
1723991911,4cyclictest0-21swapper/008:11:290
1723991910,6cyclictest0-21swapper/008:39:090
1723991910,5cyclictest0-21swapper/011:32:350
1723991910,3cyclictest0-21swapper/009:04:090
1723991910,3cyclictest0-21swapper/007:39:120
1723991910,1cyclictest0-21swapper/009:28:390
172399190,8cyclictest0-21swapper/009:49:190
172499189,5cyclictest11532-21apache212:04:031
172499184,6cyclictest0-21swapper/107:43:571
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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