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2026-06-19 - 01:02
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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 376 highest latencies:
System rackcslot2.osadl.org (updated Thu Jun 18, 2026 12:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2663027552,18sleep10-21swapper/107:07:001
306512720,0sleep00-21swapper/010:20:060
171192700,1sleep00-21swapper/012:13:560
218652680,0sleep00-21swapper/011:37:000
264892660,0sleep10-21swapper/110:14:301
2672326451,8sleep00-21swapper/007:07:570
230992640,0sleep10-21swapper/112:22:441
26973994114,1cyclictest24-21ksoftirqd/112:28:511
26972993628,8cyclictest0-21swapper/008:22:430
26972993510,25cyclictest0-21swapper/012:12:130
26973993434,0cyclictest24-21ksoftirqd/112:15:511
26973993330,2cyclictest24-21ksoftirqd/109:38:581
26973993330,2cyclictest24-21ksoftirqd/109:38:581
26973993230,1cyclictest15664-21df11:28:521
26973993228,3cyclictest31742-21memory12:33:531
26973993228,3cyclictest18195-21ssh09:19:441
26973993228,2cyclictest22369-21df_inode10:53:521
26973993215,1cyclictest91rcu_preempt09:09:011
26972993210,10cyclictest0-21swapper/011:21:150
26973993128,2cyclictest9908-21latency_hist09:53:401
26973993128,2cyclictest30543-21python11:03:581
26973993128,2cyclictest2569-21processes11:53:561
26973993127,3cyclictest2053-21ls08:48:581
26973993127,3cyclictest0-21swapper/108:21:501
26973993113,1cyclictest91rcu_preempt10:38:531
26973993110,3cyclictest91rcu_preempt11:00:401
26973993110,2cyclictest24-21ksoftirqd/110:18:421
26973993027,2cyclictest8460-21diskmemload10:50:241
26973993027,2cyclictest651-21nscd11:39:231
26973993027,2cyclictest2820-21/usr/sbin/munin07:28:541
26973993027,2cyclictest20302-21/usr/sbin/munin11:34:001
26973993027,2cyclictest14936-21df_inode10:43:521
26973993026,3cyclictest0-21swapper/111:43:571
26973993025,1cyclictest0-21swapper/112:00:371
26972993029,1cyclictest0-21swapper/008:48:310
26973992927,2cyclictest6727-21ssh11:16:111
26973992927,2cyclictest26575-21ssh09:31:461
26973992927,2cyclictest0-21swapper/110:10:091
26973992927,2cyclictest0-21swapper/107:58:491
26973992927,1cyclictest8340-21apache_processe07:43:501
26973992927,1cyclictest1872-21python11:08:591
26973992926,2cyclictest8460-21diskmemload09:23:561
26973992926,2cyclictest32522-21ssh11:50:591
26973992926,2cyclictest29134-21diskstats07:13:521
26973992926,2cyclictest10993-21ssh11:22:121
26973992926,2cyclictest0-21swapper/112:23:491
26973992926,2cyclictest0-21swapper/109:55:341
26973992926,2cyclictest0-21swapper/107:39:491
26973992925,3cyclictest16244-21ls12:13:391
26973992924,4cyclictest13231-21irqstats09:13:541
26973992922,3cyclictest24-21ksoftirqd/108:38:581
26973992919,9cyclictest8460-21diskmemload10:34:531
26973992826,2cyclictest8460-21diskmemload12:08:351
26973992826,2cyclictest8460-21diskmemload09:47:551
26973992826,2cyclictest0-21swapper/110:27:501
26973992826,2cyclictest0-21swapper/110:00:031
26973992826,1cyclictest4797-21apache_volume08:58:491
26973992825,2cyclictest5092-21ssh10:29:001
26973992825,2cyclictest30393-21ssh09:37:041
26973992825,2cyclictest0-21swapper/108:43:491
26973992825,2cyclictest0-21swapper/107:54:001
26973992820,7cyclictest0-21swapper/107:18:511
26972992820,4cyclictest6540-21/usr/sbin/munin09:48:520
26973992725,2cyclictest8460-21diskmemload11:28:231
26973992724,2cyclictest20001-21expr08:13:511
26973992724,2cyclictest1199-21runrttasks07:53:081
26972992713,3cyclictest0-21swapper/010:43:550
26972992710,8cyclictest0-21swapper/008:23:510
2697299270,10cyclictest0-21swapper/007:18:500
26973992624,2cyclictest0-21swapper/110:04:571
26973992624,1cyclictest26993-21apache_processe07:08:491
26973992624,1cyclictest26882-21awk08:28:581
26973992624,1cyclictest23907-21sh08:23:511
26973992623,2cyclictest0-21swapper/108:33:501
26972992610,2cyclictest0-21swapper/010:00:510
26972992610,0cyclictest0-21swapper/008:18:210
2697399257,12cyclictest0-21swapper/108:08:551
26973992515,8cyclictest0-21swapper/108:03:511
26972992521,2cyclictest4433-21apache211:33:160
2697299251,1cyclictest0-21swapper/010:48:510
2697299250,25cyclictest0-21swapper/010:24:450
26973992421,2cyclictest4497-21runrttasks08:57:331
26973992414,6cyclictest1199-21runrttasks07:28:171
26973992411,12cyclictest0-21swapper/109:06:541
26972992420,2cyclictest0-21swapper/011:49:000
26972992415,3cyclictest0-21swapper/012:27:370
26972992414,5cyclictest19855-21kworker/u4:110:55:000
26972992410,8cyclictest18581-21sh09:20:290
26972992410,8cyclictest0-21swapper/011:10:270
2697299240,16cyclictest0-21swapper/008:53:550
26973992320,2cyclictest0-21swapper/107:34:211
26972992319,3cyclictest4407-21apache209:14:400
26972992310,7cyclictest0-21swapper/009:38:560
26972992310,7cyclictest0-21swapper/009:38:560
26972992310,2cyclictest0-21swapper/011:23:520
26972992310,1cyclictest0-21swapper/010:15:500
2697299230,22cyclictest7449-21ntp_kernel_pll_09:03:560
2697299229,8cyclictest4407-21apache211:47:170
2697299225,16cyclictest0-21swapper/010:39:520
26972992214,7cyclictest0-21swapper/010:58:530
26972992210,5cyclictest0-21swapper/007:48:080
2697299220,22cyclictest0-21swapper/012:21:170
2697299220,21cyclictest0-21swapper/010:34:020
2697299220,18cyclictest8460-21diskmemload12:34:170
2697299216,4cyclictest24130-21ssh11:38:590
2697299214,9cyclictest27920-21ssh09:33:510
2697299214,15cyclictest0-21swapper/010:03:510
26972992117,4cyclictest947-21sendmail-mta10:30:360
26972992114,7cyclictest0-21swapper/011:07:050
2697299211,10cyclictest28744-21latency_hist07:13:390
26972992110,7cyclictest0-21swapper/011:13:590
26972992110,2cyclictest0-21swapper/011:58:000
26972992019,0cyclictest0-21swapper/009:31:570
26972992010,4cyclictest0-21swapper/007:28:540
26972992010,3cyclictest0-21swapper/009:26:480
2697299200,19cyclictest0-21swapper/012:32:040
2697299195,8cyclictest28913-21sshd07:13:500
2697299193,10cyclictest0-21swapper/012:03:530
26972991911,3cyclictest100250irq/107-eth1-rx09:56:460
26972991910,6cyclictest0-21swapper/007:25:080
26972991910,2cyclictest0-21swapper/008:42:520
26972991910,0cyclictest0-21swapper/007:37:500
2697299190,9cyclictest0-21swapper/007:58:580
2697299190,17cyclictest0-21swapper/007:54:000
2697299183,9cyclictest0-21swapper/009:43:500
26972991816,1cyclictest19107-21ls08:08:590
26972991810,5cyclictest0-21swapper/009:08:490
26972991810,4cyclictest0-21swapper/010:11:530
26972991810,3cyclictest0-21swapper/011:58:530
2697299180,1cyclictest0-21swapper/008:36:410
244921810,0sleep00-21swapper/008:51:430
2697299173,8cyclictest0-21swapper/008:58:500
26972991710,2cyclictest0-21swapper/008:28:510
792521610,1sleep00-21swapper/007:41:090
26972991613,2cyclictest4407-21apache207:48:530
26972991610,6cyclictest0-21swapper/008:06:200
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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