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2026-05-11 - 05:38
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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 Mon May 11, 2026 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2092421620,4sleep120926-21fschecks_time19:04:121
286021180,1sleep12250299cyclictest23:14:101
2194726652,9sleep00-21swapper/019:05:040
22502993613,5cyclictest91rcu_preempt23:34:141
22502993520,8cyclictest24-21ksoftirqd/123:23:251
22502993518,2cyclictest91rcu_preempt00:23:281
22502993515,2cyclictest91rcu_preempt20:51:471
22502993416,3cyclictest91rcu_preempt20:14:171
22502993315,3cyclictest91rcu_preempt23:59:111
22502993315,2cyclictest91rcu_preempt19:39:091
22502993229,2cyclictest27415-21sed19:19:161
22502993229,2cyclictest21886-21apache_volume22:14:101
22502993228,3cyclictest26861-21df_inode20:44:111
22502993228,3cyclictest23699-21apache_processe21:34:091
22502993228,3cyclictest14565-21diskstats22:04:111
22502993228,2cyclictest24-21ksoftirqd/121:29:171
22502993129,2cyclictest29555-21/usr/sbin/munin19:24:201
22502993129,1cyclictest32201-21memory23:09:141
22502993129,1cyclictest23864-21apache_processe22:59:101
22502993128,3cyclictest16573-21/usr/sbin/munin21:24:151
22502993128,2cyclictest30255-21apache_volume19:29:101
22502993128,2cyclictest24-21ksoftirqd/121:23:371
22502993128,2cyclictest16012-21irqstats00:14:141
22502993127,3cyclictest0-21swapper/119:59:151
22502993121,9cyclictest31533-21sensors_temp20:54:161
22501993131,0cyclictest0-21swapper/022:39:500
22501993110,3cyclictest0-21swapper/023:42:480
2250299309,2cyclictest91rcu_preempt21:54:501
22502993028,1cyclictest13214-21apache_processe20:09:091
22502993027,3cyclictest0-21swapper/120:29:111
22502993027,2cyclictest9873-21grep00:04:191
22502993027,2cyclictest3750-21diskmemload22:56:291
22502993027,2cyclictest28464-21timerandwakeup21:39:181
22502993027,2cyclictest17060-21apache_accesses20:19:081
22502993027,2cyclictest14025-21ssh00:11:211
22502993026,3cyclictest4925-21apache_processe22:34:101
22502993026,3cyclictest2852-21/usr/sbin/munin21:04:181
22502993023,6cyclictest10584-21apache_accesses23:24:061
22502993016,8cyclictest24-21ksoftirqd/122:53:221
22502993010,1cyclictest24-21ksoftirqd/122:28:111
22502992927,2cyclictest3750-21diskmemload21:45:051
22502992927,2cyclictest1008-21ssh00:37:051
22502992927,1cyclictest3623-21apache_accesses19:44:081
22502992927,1cyclictest19194-21diskstats20:24:111
22502992927,1cyclictest0-21swapper/120:34:101
22502992926,2cyclictest8004-21ssh21:14:031
22502992926,2cyclictest28436-21ssh22:21:561
22502992926,2cyclictest25808-21ls20:39:181
22502992926,2cyclictest21259-21runrttasks22:13:131
22502992926,2cyclictest14469-21rm22:45:491
22502992926,2cyclictest1199-21runrttasks21:59:401
22502992925,3cyclictest8702-21ssh22:39:041
22502992919,4cyclictest24-21ksoftirqd/123:43:101
22502992918,10cyclictest3638-21ntp_states21:49:161
2250299289,1cyclictest91rcu_preempt23:54:141
2250299289,1cyclictest24-21ksoftirqd/123:44:151
22502992826,2cyclictest2963-21ssh22:30:331
22502992825,2cyclictest24293-21awk19:13:581
22502992823,4cyclictest32504-21ssh23:52:231
2250199280,26cyclictest0-21swapper/021:32:500
22502992725,2cyclictest0-21swapper/121:12:501
22502992725,1cyclictest671-21memory20:59:141
22502992724,2cyclictest8426-21mailstats19:54:181
22502992724,2cyclictest27742-21apache_volume23:04:111
22502992724,2cyclictest0-21swapper/119:49:141
22502992723,0cyclictest24-21ksoftirqd/100:25:091
22502992720,6cyclictest3750-21diskmemload23:31:021
22502992720,6cyclictest28486-21ssh00:29:461
2250199270,2cyclictest0-21swapper/023:04:490
22502992622,3cyclictest0-21swapper/119:14:151
22501992610,16cyclictest0-21swapper/022:33:330
22502992523,1cyclictest11516-21diskstats20:04:111
22502992511,12cyclictest0-21swapper/119:37:321
2250199256,18cyclictest0-21swapper/021:16:560
2250199250,25cyclictest0-21swapper/023:27:590
2250199243,9cyclictest0-21swapper/020:49:090
2250199242,21cyclictest32457-21/usr/sbin/munin20:59:160
22501992410,14cyclictest0-21swapper/023:38:060
22501992410,12cyclictest0-21swapper/023:32:510
22501992322,1cyclictest30078-21apache221:26:150
22501992321,1cyclictest770-21irqbalance22:46:180
22501992318,3cyclictest30078-21apache223:20:480
22501992311,8cyclictest0-21swapper/000:34:090
22501992310,8cyclictest0-21swapper/021:37:270
2250199230,1cyclictest0-21swapper/021:40:000
2884722210,0sleep00-21swapper/022:22:500
22501992222,0cyclictest0-21swapper/019:12:060
22501992220,1cyclictest0-21swapper/021:59:160
22501992216,3cyclictest30078-21apache223:47:120
22501992210,8cyclictest0-21swapper/022:05:530
22501992210,8cyclictest0-21swapper/000:30:420
22501992210,6cyclictest0-21swapper/000:24:100
22501992210,5cyclictest0-21swapper/000:11:370
22501992210,10cyclictest0-21swapper/022:55:030
2250199220,12cyclictest0-21swapper/021:53:030
2250199212,18cyclictest0-21swapper/022:14:110
22501992121,0cyclictest0-21swapper/020:46:040
22501992112,5cyclictest0-21swapper/023:02:060
22501992111,6cyclictest0-21swapper/022:24:090
22501992110,7cyclictest0-21swapper/021:56:070
22501992110,0cyclictest0-21swapper/023:10:310
306922010,0sleep00-21swapper/023:14:120
22501992018,1cyclictest802-21apache220:41:070
22501992015,4cyclictest100150irq/106-eth1-rx22:52:580
22501992015,3cyclictest30961-21awk23:49:210
22501992011,4cyclictest0-21swapper/000:08:230
22501992010,7cyclictest0-21swapper/020:19:080
22501992010,6cyclictest0-21swapper/000:22:560
22501992010,4cyclictest0-21swapper/020:04:160
22501992010,4cyclictest0-21swapper/019:54:140
530921910,0sleep00-21swapper/019:48:240
2250199192,9cyclictest0-21swapper/022:09:100
22501991910,7cyclictest0-21swapper/021:09:430
22501991910,5cyclictest0-21swapper/000:03:580
22501991910,4cyclictest0-21swapper/019:49:080
22501991910,2cyclictest0-21swapper/023:54:130
2250199187,2cyclictest3162-21ls21:04:200
2250199186,7cyclictest0-21swapper/022:34:180
2250199184,8cyclictest0-21swapper/020:54:110
22501991810,4cyclictest0-21swapper/000:14:200
22501991810,2cyclictest0-21swapper/019:29:110
1466021810,0sleep00-21swapper/020:10:550
142021810,1sleep00-21swapper/019:37:560
2250199174,6cyclictest0-21swapper/019:39:160
22501991715,1cyclictest28273-21taskset19:24:030
22501991713,3cyclictest30097-21apache221:47:370
22501991713,2cyclictest30078-21apache220:26:010
22501991710,2cyclictest0-21swapper/020:14:110
1506621710,0sleep00-21swapper/021:23:020
22501991610,3cyclictest0-21swapper/019:19:100
22501991610,2cyclictest0-21swapper/019:18:240
2250199152,7cyclictest0-21swapper/020:34:150
22501991510,2cyclictest0-21swapper/020:29:380
22501991412,2cyclictest0-21swapper/020:00:210
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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