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2026-08-21 - 06:43
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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 Fri Aug 21, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
274102690,1sleep10-21swapper/122:28:241
2027826854,9sleep10-21swapper/119:04:081
2040126755,8sleep00-21swapper/019:05:240
57502650,0sleep10-21swapper/123:30:101
230792540,1sleep023083-21cpuspeed_turbos22:23:180
20839993311,5cyclictest0-21swapper/100:25:431
20838993310,20cyclictest0-21swapper/022:59:490
20839993210,0cyclictest0-21swapper/121:33:091
20839993131,0cyclictest0-21swapper/121:13:421
20839992928,1cyclictest0-21swapper/122:03:201
20838992929,0cyclictest0-21swapper/021:57:450
20838992928,1cyclictest0-21swapper/021:10:060
20839992711,6cyclictest5741-21apache_accesses19:53:171
2083899270,18cyclictest0-21swapper/019:43:210
2522822610,2sleep00-21swapper/019:18:210
20839992625,0cyclictest24-21ksoftirqd/123:13:061
20838992610,6cyclictest0-21swapper/023:08:250
20839992525,0cyclictest0-21swapper/122:18:501
20839992510,3cyclictest0-21swapper/122:47:321
2083999250,3cyclictest0-21swapper/120:23:161
20838992523,1cyclictest81ktimersoftd/020:02:040
20838992523,1cyclictest21324-21apache_volume23:53:180
2083899250,23cyclictest0-21swapper/021:31:050
20839992422,1cyclictest24-21ksoftirqd/123:13:181
20838992423,0cyclictest81ktimersoftd/000:12:400
20838992417,5cyclictest14221-21apache220:39:360
20838992415,6cyclictest17836-21/usr/sbin/munin23:48:230
20839992317,4cyclictest14200-21apache221:45:361
20839992313,7cyclictest0-21swapper/120:03:181
2083999231,21cyclictest0-21swapper/121:11:361
20839992310,6cyclictest0-21swapper/121:22:541
20839992310,5cyclictest0-21swapper/121:48:281
2083999230,5cyclictest0-21swapper/119:33:151
2083899235,7cyclictest0-21swapper/021:13:170
20838992321,1cyclictest17629-21basename23:48:060
20838992314,7cyclictest14200-21apache223:26:430
20838992310,6cyclictest0-21swapper/022:44:430
20838992310,6cyclictest0-21swapper/021:18:390
20838992310,12cyclictest0-21swapper/021:50:500
20839992219,1cyclictest14200-21apache223:52:351
20839992216,4cyclictest14221-21apache221:29:391
20839992216,4cyclictest14200-21apache200:12:011
20839992210,8cyclictest0-21swapper/120:13:221
20839992210,6cyclictest0-21swapper/123:05:451
20838992218,2cyclictest0-21swapper/022:53:250
20838992210,6cyclictest0-21swapper/020:47:390
20838992210,10cyclictest0-21swapper/023:28:210
2083899220,1cyclictest0-21swapper/021:24:510
2083899220,11cyclictest0-21swapper/020:33:210
2083999215,12cyclictest0-21swapper/119:38:161
2083999214,10cyclictest0-21swapper/123:18:171
20839992110,6cyclictest0-21swapper/100:18:181
20839992110,5cyclictest0-21swapper/100:30:191
20839992110,2cyclictest0-21swapper/121:41:451
20839992110,0cyclictest0-21swapper/100:05:001
20838992111,7cyclictest100250irq/107-eth1-rx22:33:260
2083899211,10cyclictest0-21swapper/020:53:240
20838992110,9cyclictest0-21swapper/023:04:420
20838992110,8cyclictest29405-21fschecks_count23:18:180
20838992110,8cyclictest0-21swapper/021:58:370
20838992110,5cyclictest0-21swapper/000:22:160
20838992110,4cyclictest0-21swapper/022:38:170
2083899210,3cyclictest0-21swapper/023:34:020
2083899210,20cyclictest12107-21ssh22:07:440
2083999204,10cyclictest0-21swapper/120:36:571
2083999202,12cyclictest0-21swapper/119:13:251
20839992018,1cyclictest770-21irqbalance00:35:161
20839992016,3cyclictest14200-21apache223:00:401
2083999201,0cyclictest2043-21diskmemload22:56:071
20839992010,7cyclictest0-21swapper/123:23:201
20839992010,4cyclictest0-21swapper/120:53:181
20839992010,2cyclictest0-21swapper/123:36:291
20839992010,2cyclictest0-21swapper/120:48:271
2083999200,8cyclictest0-21swapper/123:58:261
2083899204,14cyclictest0-21swapper/023:13:270
2083899204,10cyclictest0-21swapper/019:53:200
20838992019,1cyclictest14200-21apache220:16:170
2083899201,18cyclictest28257-21rm22:29:290
2083899201,0cyclictest0-21swapper/000:03:140
20838992010,6cyclictest0-21swapper/022:14:070
20838992010,5cyclictest0-21swapper/019:28:250
20838992010,3cyclictest0-21swapper/022:48:150
1425122010,0sleep10-21swapper/123:43:151
2083999194,6cyclictest25192-21/usr/sbin/munin19:18:191
2083999192,8cyclictest16599-21rm22:13:211
2083999192,6cyclictest636-21nscd23:38:471
20839991910,6cyclictest14221-21apache222:24:461
20839991910,3cyclictest0-21swapper/122:48:181
20839991910,3cyclictest0-21swapper/121:56:531
20839991910,2cyclictest0-21swapper/123:53:171
20838991915,1cyclictest0-21swapper/022:20:210
2083899191,1cyclictest0-21swapper/000:36:130
20838991910,6cyclictest0-21swapper/021:03:200
20838991910,4cyclictest0-21swapper/000:32:500
20838991910,0cyclictest0-21swapper/019:13:190
2083899190,17cyclictest0-21swapper/000:23:510
2083899190,11cyclictest0-21swapper/019:38:200
2083999183,8cyclictest0-21swapper/122:08:191
2083999182,10cyclictest0-21swapper/120:58:171
20839991810,4cyclictest0-21swapper/100:13:211
20839991810,3cyclictest0-21swapper/119:48:191
20839991810,2cyclictest0-21swapper/120:13:041
20839991810,2cyclictest0-21swapper/119:58:191
2083999180,8cyclictest14175-21apache221:03:171
2083899185,8cyclictest0-21swapper/021:33:180
2083899183,7cyclictest24260-21irqstats21:38:210
2083899183,10cyclictest11340-21latency_hist20:08:060
20838991817,0cyclictest81ktimersoftd/020:58:480
20838991810,5cyclictest0-21swapper/023:58:190
20838991810,3cyclictest0-21swapper/020:48:160
20838991810,3cyclictest0-21swapper/020:23:180
2083899180,0cyclictest0-21swapper/000:13:490
1299921810,0sleep00-21swapper/020:10:350
2083999179,4cyclictest0-21swapper/122:42:221
2083999175,6cyclictest231ktimersoftd/121:23:191
2083999173,7cyclictest0-21swapper/121:58:261
20839991717,0cyclictest0-21swapper/119:43:251
20839991717,0cyclictest0-21swapper/119:08:241
20839991716,1cyclictest14221-21apache222:34:371
2083999171,5cyclictest0-21swapper/120:18:181
20839991710,2cyclictest0-21swapper/119:28:161
2083899174,10cyclictest0-21swapper/020:28:180
2083899172,9cyclictest0-21swapper/023:38:180
2083899172,8cyclictest0-21swapper/021:43:260
2083899172,11cyclictest0-21swapper/019:33:140
20838991710,4cyclictest14200-21apache222:08:230
20838991710,2cyclictest0-21swapper/020:23:060
20839991610,4cyclictest0-21swapper/120:28:261
20839991610,3cyclictest0-21swapper/119:23:271
20839991610,1cyclictest0-21swapper/120:46:011
2083899163,7cyclictest0-21swapper/019:28:060
2083999153,7cyclictest0-21swapper/120:38:191
2083899153,5cyclictest0-21swapper/019:48:240
20838991510,2cyclictest0-21swapper/019:08:240
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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