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2025-05-09 - 18:47
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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 highest latencies:
System rackcslot2.osadl.org (updated Fri May 09, 2025 12:43:24)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3161927158,9sleep10-21swapper/107:04:211
3182426849,8sleep00-21swapper/007:06:290
191572580,2sleep13217599cyclictest07:58:151
3217499388,9cyclictest91rcu_preempt09:08:330
32174993810,4cyclictest91rcu_preempt10:18:150
32174993716,2cyclictest91rcu_preempt08:48:340
32174993434,0cyclictest0-21swapper/012:19:530
32174993430,3cyclictest3008-21ntp_states08:38:350
32174993330,2cyclictest7280-21diskstats10:23:300
32174993329,3cyclictest14804-21apache_processe10:33:270
32174993230,2cyclictest13624-21diskmemload11:49:490
32174993230,1cyclictest26947-21memory12:13:310
32174993230,1cyclictest10039-21hddtemp_smartct07:33:310
32174993229,2cyclictest32205-21hddtemp_smartct11:38:280
32174993229,2cyclictest21995-21ssh11:24:150
32174993229,2cyclictest13624-21diskmemload12:03:230
32174993228,3cyclictest0-21swapper/012:08:370
32174993228,3cyclictest0-21swapper/010:52:070
32174993129,2cyclictest21275-21ls09:58:320
32174993129,1cyclictest3005-21users07:13:340
32174993129,1cyclictest14696-21apache_processe11:58:290
32174993129,1cyclictest12868-21apache_volume11:13:270
32174993129,1cyclictest12076-21df09:03:300
32174993128,2cyclictest6305-21/usr/sbin/munin07:23:330
32174993128,2cyclictest5233-21ssh11:44:510
32174993128,2cyclictest31247-21users10:53:370
32174993128,2cyclictest20077-21turbostat11:23:150
32174993128,2cyclictest15960-21seq09:52:220
32174993128,2cyclictest11254-21ssh12:35:140
32175993010,4cyclictest0-21swapper/111:14:421
3217499307,3cyclictest0-21swapper/009:35:210
32174993028,2cyclictest0-21swapper/011:33:290
32174993028,1cyclictest8502-21irqstats08:53:300
32174993028,1cyclictest30772-21apache_accesses08:28:280
32174993027,2cyclictest25832-21cstates09:23:250
32174993027,2cyclictest15653-21diskstats07:48:280
32174993027,2cyclictest11080-21cstates10:28:280
32174993027,2cyclictest10531-21ssh09:44:220
32174993027,2cyclictest0-21swapper/012:25:570
32174993027,2cyclictest0-21swapper/010:11:560
32174993026,3cyclictest5524-21if_eth011:03:310
32174993026,3cyclictest23018-21ntp_states10:43:360
32174993026,3cyclictest0-21swapper/010:18:320
32174993025,4cyclictest12428-21ssh11:53:550
32175992910,2cyclictest0-21swapper/111:49:401
32174992927,1cyclictest4205-21irqstats07:18:320
32174992927,1cyclictest21187-21apache_accesses08:03:270
32174992927,1cyclictest18873-21hddtemp_smartct10:38:270
32174992926,2cyclictest5245-21cstates09:38:270
32174992926,2cyclictest27530-21ssh10:07:390
32174992926,2cyclictest12988-21seq07:39:300
32174992926,2cyclictest0-21swapper/009:13:470
32174992922,6cyclictest16842-21df09:53:290
32174992918,9cyclictest28505-21taskset08:21:270
32174992918,5cyclictest7-21ksoftirqd/009:29:150
3217499288,15cyclictest0-21swapper/011:08:330
3217499284,16cyclictest14048-21if_eth307:43:300
32174992826,2cyclictest0-21swapper/011:02:520
32174992826,1cyclictest1073-21ntp_states08:33:330
32174992825,3cyclictest0-21swapper/011:28:410
32174992825,2cyclictest0-21swapper/012:31:530
32174992825,2cyclictest0-21swapper/008:13:350
32174992821,6cyclictest717-21snmpd09:21:090
32174992725,2cyclictest0-21swapper/008:58:310
32174992724,2cyclictest30005-21timerwakeupswit08:23:370
32174992717,9cyclictest0-21swapper/007:08:330
32174992716,7cyclictest24916-21latency_hist08:13:150
32175992626,0cyclictest32172-21cyclictest12:18:081
32175992626,0cyclictest0-21swapper/111:24:311
32175992623,2cyclictest10672-21ssh12:33:541
32174992623,2cyclictest0-21swapper/008:00:450
32175992515,8cyclictest9591-21apache209:34:171
32175992512,4cyclictest6458-21ls12:28:361
32175992510,3cyclictest0-21swapper/112:23:001
32174992525,0cyclictest0-21swapper/007:32:420
3217599242,4cyclictest0-21swapper/109:25:191
32175992419,4cyclictest717-21snmpd09:38:421
32175992419,2cyclictest9617-21apache210:56:271
32175992410,5cyclictest0-21swapper/107:18:301
3217599240,2cyclictest0-21swapper/111:30:491
37322230,1sleep13217599cyclictest12:25:371
32175992310,9cyclictest0-21swapper/112:12:341
32175992310,9cyclictest0-21swapper/112:05:101
32175992310,8cyclictest0-21swapper/108:13:271
32175992310,7cyclictest0-21swapper/111:03:311
32175992310,7cyclictest0-21swapper/110:58:381
3217599229,12cyclictest0-21swapper/109:20:481
32175992219,3cyclictest9617-21apache211:56:221
32175992210,8cyclictest0-21swapper/107:28:281
32174992218,4cyclictest81ktimersoftd/007:53:350
3217599215,9cyclictest0-21swapper/108:48:341
32175992111,9cyclictest636-21nscd09:09:531
32175992110,7cyclictest0-21swapper/109:14:471
3217599210,1cyclictest5187-21ssh11:44:471
32174992120,1cyclictest0-21swapper/008:43:340
3217599206,6cyclictest11011-21ssh09:45:211
3217599205,11cyclictest636-21nscd09:32:421
3217599202,14cyclictest0-21swapper/107:37:551
32175992011,4cyclictest0-21swapper/107:23:291
32175992010,8cyclictest0-21swapper/111:59:161
32175992010,7cyclictest9591-21apache210:28:471
32175992010,6cyclictest0-21swapper/111:39:511
32175992010,6cyclictest0-21swapper/111:33:291
32175992010,6cyclictest0-21swapper/110:51:001
32175992010,5cyclictest0-21swapper/110:38:411
32175992010,5cyclictest0-21swapper/110:18:461
3217599200,19cyclictest0-21swapper/110:08:161
3217599194,12cyclictest0-21swapper/107:38:291
32175991910,5cyclictest0-21swapper/108:33:291
32175991910,4cyclictest0-21swapper/110:06:351
32175991910,4cyclictest0-21swapper/108:23:581
32175991910,3cyclictest0-21swapper/108:53:251
32175991910,3cyclictest0-21swapper/108:08:271
3217599190,8cyclictest0-21swapper/111:08:331
3217599190,13cyclictest0-21swapper/110:16:331
32175991816,1cyclictest20557-21/usr/sbin/munin09:58:331
32175991815,0cyclictest19911-21ssh11:22:561
32175991810,5cyclictest0-21swapper/110:37:441
32175991810,5cyclictest0-21swapper/108:48:121
32175991810,5cyclictest0-21swapper/108:18:261
32175991810,5cyclictest0-21swapper/107:43:311
32175991810,4cyclictest0-21swapper/110:28:081
32175991810,3cyclictest0-21swapper/107:58:271
32175991810,3cyclictest0-21swapper/107:08:331
32175991810,2cyclictest0-21swapper/109:50:191
32175991810,2cyclictest0-21swapper/108:28:281
32175991810,1cyclictest0-21swapper/109:57:531
2267321810,0sleep10-21swapper/108:05:391
3217599175,8cyclictest0-21swapper/107:48:321
32175991710,2cyclictest0-21swapper/109:03:311
3217599164,8cyclictest0-21swapper/107:13:251
3217599162,8cyclictest0-21swapper/108:58:281
32175991610,2cyclictest0-21swapper/108:38:291
32175991510,4cyclictest0-21swapper/110:44:571
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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