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2026-09-02 - 22:26
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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 Sep 02, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1057127254,8sleep00-21swapper/007:06:070
1051327158,8sleep10-21swapper/107:05:301
10933993410,18cyclictest0-21swapper/012:13:360
10933992910,3cyclictest0-21swapper/011:36:410
10934992811,2cyclictest0-21swapper/110:07:541
1093499280,25cyclictest0-21swapper/110:30:241
10933992810,2cyclictest0-21swapper/012:29:310
10934992722,4cyclictest231ktimersoftd/107:58:171
10934992710,12cyclictest0-21swapper/112:13:341
10933992617,5cyclictest21728-21wc07:33:180
1093399261,24cyclictest20708-21kworker/0:108:35:110
1093399260,2cyclictest0-21swapper/010:32:270
1093399256,8cyclictest0-21swapper/009:28:140
10933992525,0cyclictest0-21swapper/009:15:360
10933992520,3cyclictest802-21apache210:12:200
1093399251,4cyclictest23151-21kworker/u4:010:18:270
10933992513,7cyclictest0-21swapper/008:29:280
10933992510,8cyclictest100150irq/106-eth1-rx09:48:590
1093399250,2cyclictest0-21swapper/009:25:270
10934992420,3cyclictest13802-21ssh09:37:231
10934992420,2cyclictest0-21swapper/110:15:351
10934992417,5cyclictest20751-21apache209:56:121
10934992410,5cyclictest0-21swapper/109:58:091
10934992410,13cyclictest0-21swapper/109:16:341
1093499240,1cyclictest28717-21unixbench_singl10:43:201
1093499240,14cyclictest0-21swapper/112:08:121
10933992424,0cyclictest0-21swapper/009:35:390
10933992417,6cyclictest0-21swapper/012:08:100
1093399241,18cyclictest510-21sed11:38:200
10934992312,7cyclictest100150irq/106-eth1-rx09:41:561
10934992310,7cyclictest0-21swapper/109:23:161
10934992310,1cyclictest0-21swapper/111:30:201
10933992321,2cyclictest20751-21apache212:21:480
10933992321,2cyclictest0-21swapper/009:38:150
10933992311,8cyclictest0-21swapper/007:43:130
10933992310,7cyclictest0-21swapper/011:13:150
10933992310,6cyclictest0-21swapper/012:23:130
1093499222,17cyclictest9039-21apache_accesses11:53:101
1093499221,7cyclictest0-21swapper/111:38:151
10934992215,6cyclictest20751-21apache211:15:481
1093499221,20cyclictest0-21swapper/108:58:121
10934992210,3cyclictest0-21swapper/111:18:061
10934992210,3cyclictest0-21swapper/109:48:211
1093399224,16cyclictest8399-21kworker/0:210:58:490
1093399224,14cyclictest0-21swapper/009:18:200
10933992218,3cyclictest0-21swapper/011:52:080
10933992218,2cyclictest20777-21apache211:47:120
10933992212,7cyclictest107950irq/115-eth2-tx07:10:170
1939122110,0sleep10-21swapper/109:44:171
1093499215,8cyclictest0-21swapper/108:08:161
1093499213,2cyclictest0-21swapper/111:59:201
10934992118,2cyclictest231ktimersoftd/112:34:411
10934992114,2cyclictest10931-21cyclictest11:08:161
1093499211,18cyclictest0-21swapper/109:28:411
1093499211,10cyclictest0-21swapper/110:18:161
1093499210,12cyclictest0-21swapper/107:53:121
1093399214,12cyclictest0-21swapper/009:54:240
10933992113,4cyclictest0-21swapper/010:40:330
10933992110,4cyclictest0-21swapper/007:18:160
10933992110,1cyclictest0-21swapper/010:33:100
259522200,0sleep00-21swapper/011:28:150
1093499206,10cyclictest0-21swapper/108:45:161
1093499205,8cyclictest0-21swapper/107:23:101
10934992016,3cyclictest20777-21apache210:10:311
10934992011,4cyclictest24816-21diskmemload10:48:141
1093499201,11cyclictest0-21swapper/109:18:101
10934992010,8cyclictest0-21swapper/110:58:091
10934992010,7cyclictest0-21swapper/112:20:441
10934992010,7cyclictest0-21swapper/107:33:181
10934992010,6cyclictest0-21swapper/108:18:121
10934992010,4cyclictest0-21swapper/111:43:151
10934992010,3cyclictest0-21swapper/112:23:171
1093399202,17cyclictest20708-21kworker/0:108:43:590
10933992010,8cyclictest0-21swapper/012:02:350
10933992010,7cyclictest0-21swapper/007:27:510
10933992010,5cyclictest0-21swapper/009:03:130
10933992010,4cyclictest0-21swapper/010:53:120
10933992010,3cyclictest17376-21cstates08:48:110
10933992010,10cyclictest8399-21kworker/0:211:54:110
297862190,0sleep00-21swapper/009:58:390
1093499197,6cyclictest0-21swapper/110:39:141
1093499193,1cyclictest0-21swapper/109:10:521
10934991918,1cyclictest20751-21apache209:05:451
1093499191,16cyclictest8988-21apache_processe11:03:091
10934991910,4cyclictest0-21swapper/110:33:151
10934991910,4cyclictest0-21swapper/108:13:451
10934991910,4cyclictest0-21swapper/107:53:001
10934991910,0cyclictest0-21swapper/110:25:141
1093399199,5cyclictest167-21systemd-journal08:57:590
1093399198,10cyclictest20708-21kworker/0:108:41:370
1093399196,9cyclictest0-21swapper/011:18:120
10933991914,4cyclictest593-21lldpd07:29:050
10933991910,8cyclictest0-21swapper/010:43:220
10933991910,5cyclictest0-21swapper/009:45:010
10933991910,4cyclictest0-21swapper/007:53:160
10933991910,3cyclictest0-21swapper/010:14:250
10933991910,3cyclictest0-21swapper/009:08:110
807821810,0sleep10-21swapper/111:50:491
2336021810,0sleep00-21swapper/011:23:260
1093499183,11cyclictest0-21swapper/107:28:111
10934991817,0cyclictest20788-21kworker/1:208:25:101
10934991817,0cyclictest20788-21kworker/1:208:25:101
10934991810,5cyclictest0-21swapper/111:23:181
10934991810,2cyclictest0-21swapper/112:28:041
10934991810,2cyclictest0-21swapper/111:33:491
10934991810,1cyclictest0-21swapper/108:48:151
10934991810,1cyclictest0-21swapper/108:30:191
10934991810,1cyclictest0-21swapper/107:14:241
10934991810,0cyclictest0-21swapper/112:06:381
10934991810,0cyclictest0-21swapper/108:39:061
1093399183,8cyclictest12305-21ssh11:08:020
10933991811,4cyclictest0-21swapper/010:48:120
10933991811,3cyclictest0-21swapper/008:03:170
10933991810,5cyclictest0-21swapper/007:58:120
10933991810,4cyclictest0-21swapper/011:04:180
10933991810,4cyclictest0-21swapper/008:08:160
10933991810,3cyclictest0-21swapper/008:23:140
10933991810,3cyclictest0-21swapper/008:23:140
10933991810,2cyclictest0-21swapper/012:33:200
10933991810,1cyclictest0-21swapper/012:06:450
1093499176,7cyclictest15035-21diskstats07:18:131
1093499176,5cyclictest19289-21/usr/sbin/munin08:53:131
10934991716,1cyclictest5228-21ssh10:57:571
10934991716,1cyclictest20777-21apache208:03:421
10934991710,5cyclictest0-21swapper/107:08:111
10934991710,1cyclictest0-21swapper/107:43:031
10934991710,1cyclictest0-21swapper/107:38:111
1093399177,8cyclictest15500-21ssh10:24:550
10933991710,1cyclictest0-21swapper/007:38:110
166521610,0sleep00-21swapper/010:05:250
1093399161,8cyclictest0-21swapper/008:53:110
10933991610,3cyclictest0-21swapper/007:48:060
10933991610,1cyclictest0-21swapper/008:18:130
1093499151,8cyclictest0-21swapper/108:33:201
10933991510,1cyclictest0-21swapper/007:15:050
10933991510,0cyclictest0-21swapper/008:13:050
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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