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2026-05-27 - 14:06
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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 Wed May 27, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2680626957,8sleep10-21swapper/119:04:481
159252650,0sleep10-21swapper/123:26:271
2699926351,8sleep00-21swapper/019:06:480
27375993210,0cyclictest0-21swapper/119:47:591
27375992910,0cyclictest0-21swapper/123:37:011
27374992826,1cyclictest0-21swapper/022:59:070
27374992810,9cyclictest0-21swapper/021:28:140
27375992718,2cyclictest0-21swapper/121:29:051
27375992710,1cyclictest0-21swapper/122:48:371
27375992710,10cyclictest0-21swapper/123:59:301
27374992726,0cyclictest0-21swapper/000:19:290
2737599265,20cyclictest0-21swapper/122:57:471
27375992617,7cyclictest29044-21apache223:03:061
27375992610,7cyclictest0-21swapper/122:04:011
27375992525,0cyclictest0-21swapper/123:29:571
2737599252,15cyclictest0-21swapper/122:19:061
27375992510,6cyclictest0-21swapper/123:45:501
27374992515,5cyclictest81ktimersoftd/020:19:030
27374992510,7cyclictest0-21swapper/022:29:330
27374992510,13cyclictest0-21swapper/020:01:450
27375992419,4cyclictest29044-21apache200:27:151
27375992416,6cyclictest0-21swapper/122:40:561
27375992412,3cyclictest0-21swapper/120:47:531
27375992410,7cyclictest0-21swapper/120:21:511
27375992410,2cyclictest0-21swapper/123:50:011
27374992423,1cyclictest0-21swapper/020:43:510
27374992420,2cyclictest7395-21if_eth321:04:060
27374992410,0cyclictest0-21swapper/020:11:370
2737599233,16cyclictest0-21swapper/123:39:021
27375992323,0cyclictest0-21swapper/100:10:401
27375992316,5cyclictest29044-21apache220:09:111
27375992313,5cyclictest29070-21apache222:31:391
27375992310,6cyclictest0-21swapper/122:34:221
27374992321,1cyclictest19859-21/usr/sbin/munin22:49:040
27374992312,7cyclictest0-21swapper/023:17:210
27374992310,4cyclictest0-21swapper/023:09:590
2737499230,1cyclictest30378-21irqstats22:19:080
27375992221,1cyclictest29044-21apache200:32:551
27375992217,3cyclictest29070-21apache219:42:481
27375992216,3cyclictest29044-21apache221:52:141
2737599221,3cyclictest0-21swapper/121:45:331
27375992210,7cyclictest0-21swapper/119:54:001
27375992210,6cyclictest100250irq/107-eth1-rx21:16:271
27375992210,0cyclictest0-21swapper/121:43:071
2737599220,0cyclictest0-21swapper/100:34:211
2737499228,6cyclictest21643-21memory23:34:060
2737499225,8cyclictest0-21swapper/019:34:010
27374992218,3cyclictest29044-21apache222:39:120
27374992218,1cyclictest0-21swapper/021:37:110
2737499221,7cyclictest0-21swapper/022:34:080
27374992216,4cyclictest29070-21apache222:26:190
27374992214,5cyclictest29070-21apache221:30:440
27374992210,6cyclictest0-21swapper/021:59:480
27374992210,0cyclictest0-21swapper/019:29:020
2737599214,5cyclictest9789-21/usr/sbin/munin23:19:061
27375992110,9cyclictest0-21swapper/120:59:091
27375992110,4cyclictest0-21swapper/100:19:061
27375992110,0cyclictest0-21swapper/123:58:071
27375992110,0cyclictest0-21swapper/123:18:101
2737499214,8cyclictest0-21swapper/000:32:250
27374992118,0cyclictest0-21swapper/019:54:120
27374992111,3cyclictest0-21swapper/023:28:580
27374992110,3cyclictest0-21swapper/019:19:110
27374992110,2cyclictest0-21swapper/000:24:370
2737499210,1cyclictest9111-21sshd21:50:190
1232722110,0sleep00-21swapper/023:21:420
2737599202,11cyclictest0-21swapper/120:34:081
27375992013,4cyclictest29044-21apache222:15:181
27375992010,4cyclictest0-21swapper/121:34:551
27375992010,2cyclictest0-21swapper/119:19:071
2737499204,7cyclictest0-21swapper/020:04:080
2737499203,8cyclictest8492-21/usr/sbin/munin23:59:120
2737499202,5cyclictest0-21swapper/000:34:110
2737499202,11cyclictest28704-21python20:34:100
27374992017,2cyclictest802-21apache221:38:570
27374992017,1cyclictest8636-21diskmemload22:04:020
27374992014,3cyclictest81ktimersoftd/000:08:510
27374992011,4cyclictest0-21swapper/020:14:020
27374992010,5cyclictest0-21swapper/023:49:100
27374992010,2cyclictest3675-21ssh21:44:020
2737499200,1cyclictest8504-21apache_accesses19:43:590
2737599199,6cyclictest0-21swapper/100:08:501
2737599198,7cyclictest636-21nscd19:49:051
2737599197,7cyclictest8636-21diskmemload21:59:151
2737599195,4cyclictest0-21swapper/119:24:071
2737599195,11cyclictest0-21swapper/123:04:051
2737599194,12cyclictest0-21swapper/120:04:031
2737599192,7cyclictest0-21swapper/121:54:501
2737599192,12cyclictest0-21swapper/119:34:021
27375991911,5cyclictest100250irq/107-eth1-rx22:52:481
27375991910,6cyclictest0-21swapper/120:49:021
27375991910,3cyclictest20434-21ssh00:16:051
2737499195,11cyclictest0-21swapper/020:24:080
2737499194,8cyclictest0-21swapper/023:24:060
2737499194,10cyclictest0-21swapper/021:19:120
2737499192,11cyclictest0-21swapper/019:14:090
27374991918,1cyclictest29070-21apache200:09:100
27374991917,1cyclictest29070-21apache222:17:040
2737499191,17cyclictest1959-21ls19:24:100
2737499191,10cyclictest0-21swapper/021:54:020
27374991910,5cyclictest0-21swapper/021:10:030
27374991910,4cyclictest0-21swapper/022:54:110
2737499190,9cyclictest8636-21diskmemload21:15:560
2737599182,10cyclictest0-21swapper/121:09:031
27375991810,7cyclictest0-21swapper/122:12:431
2737499183,14cyclictest6734-21latency_hist21:03:500
27374991811,3cyclictest100150irq/106-eth1-rx23:42:460
27374991810,7cyclictest0-21swapper/020:54:060
27374991810,5cyclictest0-21swapper/023:58:490
27374991810,4cyclictest0-21swapper/022:12:110
27374991810,2cyclictest20630-21sh00:16:300
2737499180,9cyclictest0-21swapper/022:44:090
2737599179,6cyclictest29070-21apache221:19:141
2737599175,10cyclictest0-21swapper/123:09:111
2737599173,9cyclictest31450-21awk20:43:511
2737599173,9cyclictest0-21swapper/119:59:061
27374991714,1cyclictest27478-21runrttasks20:33:250
27374991710,4cyclictest0-21swapper/020:45:280
27374991710,4cyclictest0-21swapper/019:39:010
27374991710,3cyclictest0-21swapper/023:06:350
27374991710,2cyclictest0-21swapper/019:49:060
2737599166,5cyclictest1888-21ntp_states22:24:091
2737599162,7cyclictest0-21swapper/120:14:031
2737599161,8cyclictest0-21swapper/120:24:111
27375991613,2cyclictest100150irq/106-eth1-rx21:03:551
27375991610,1cyclictest0-21swapper/121:27:391
2737499163,4cyclictest29805-21users23:44:100
27374991610,3cyclictest0-21swapper/020:52:020
2737599153,4cyclictest0-21swapper/120:54:031
27375991510,2cyclictest0-21swapper/119:09:021
27375991510,0cyclictest0-21swapper/119:29:091
27374991510,2cyclictest0-21swapper/019:09:020
2737599143,6cyclictest0-21swapper/120:29:071
27375991410,3cyclictest0-21swapper/119:14:101
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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