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2025-12-16 - 06:39
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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 Tue Dec 16, 2025 00:43:23)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
34262730,1sleep00-21swapper/022:45:200
1659926856,8sleep00-21swapper/019:07:570
1653326755,8sleep10-21swapper/119:07:151
16975993737,0cyclictest0-21swapper/022:32:590
1697699320,1cyclictest91rcu_preempt00:35:171
16976992823,1cyclictest24-21ksoftirqd/121:05:001
16976992615,3cyclictest91rcu_preempt21:25:151
16976992421,2cyclictest24-21ksoftirqd/123:55:141
16976992411,5cyclictest24-21ksoftirqd/123:05:121
16976992410,10cyclictest0-21swapper/123:30:181
1697699234,8cyclictest0-21swapper/100:25:111
1697699232,2cyclictest24-21ksoftirqd/121:10:031
16976992317,1cyclictest24-21ksoftirqd/100:15:001
16976992313,5cyclictest24-21ksoftirqd/123:22:511
1697699231,1cyclictest91rcu_preempt22:50:111
1697699226,10cyclictest0-21swapper/121:18:071
1697699223,14cyclictest0-21swapper/121:45:191
16976992220,1cyclictest24-21ksoftirqd/121:40:171
1697699221,1cyclictest91rcu_preempt21:50:121
16976992210,4cyclictest0-21swapper/100:00:151
1697699220,10cyclictest0-21swapper/122:00:191
1697599226,7cyclictest0-21swapper/019:40:150
16975992220,1cyclictest636-21nscd22:25:130
16975992210,10cyclictest0-21swapper/022:24:260
16975992210,0cyclictest0-21swapper/000:10:190
1697599220,21cyclictest7531-21python00:20:200
1697699215,9cyclictest0-21swapper/121:20:141
1697699214,2cyclictest91rcu_preempt00:30:101
16976992121,0cyclictest24-21ksoftirqd/120:25:151
16976992119,1cyclictest24-21ksoftirqd/119:44:551
16976992115,2cyclictest13999-21apache222:20:061
16976992113,4cyclictest24-21ksoftirqd/120:05:131
1697699211,1cyclictest91rcu_preempt20:40:401
1697699211,19cyclictest15786-21latency_hist23:20:001
16976992110,4cyclictest0-21swapper/119:45:121
1697599215,10cyclictest0-21swapper/020:25:130
1697599213,4cyclictest167-21systemd-journal22:58:060
16975992113,4cyclictest81ktimersoftd/023:58:000
16975992113,2cyclictest0-21swapper/000:05:150
16975992111,8cyclictest0-21swapper/022:10:130
1697599211,14cyclictest0-21swapper/021:20:190
1866822010,0sleep10-21swapper/120:36:351
1697699208,7cyclictest24-21ksoftirqd/122:05:141
1697699204,13cyclictest0-21swapper/120:50:171
1697699202,9cyclictest0-21swapper/119:55:131
1697699202,4cyclictest91rcu_preempt19:20:091
16976992015,4cyclictest802-21apache221:55:341
16976992011,5cyclictest0-21swapper/123:50:161
1697699201,10cyclictest0-21swapper/100:15:121
1697699200,4cyclictest91rcu_preempt19:37:031
1697699200,14cyclictest0-21swapper/122:47:591
1697599205,7cyclictest0-21swapper/023:30:110
1697599202,9cyclictest0-21swapper/021:25:180
16975992017,2cyclictest13973-21apache220:17:360
1697599201,12cyclictest0-21swapper/022:35:180
16975992010,4cyclictest0-21swapper/023:25:130
16975992010,3cyclictest0-21swapper/022:00:120
16975992010,10cyclictest0-21swapper/021:45:150
950921910,0sleep10-21swapper/121:38:481
2804421910,0sleep00-21swapper/019:37:080
1700721910,1sleep10-21swapper/120:34:111
1697699197,2cyclictest91rcu_preempt20:15:201
1697699194,8cyclictest0-21swapper/123:35:121
1697699191,3cyclictest91rcu_preempt23:14:341
16976991913,4cyclictest24-21ksoftirqd/100:05:131
16976991913,3cyclictest31520-21kworker/1:122:25:181
16976991911,4cyclictest100350irq/108-eth1-tx22:40:181
16976991910,3cyclictest0-21swapper/121:31:391
16976991910,1cyclictest0-21swapper/120:47:051
1697699190,7cyclictest0-21swapper/121:05:171
1697699190,5cyclictest91rcu_preempt19:29:231
1697599195,11cyclictest0-21swapper/023:45:110
1697599194,8cyclictest0-21swapper/000:00:180
1697599193,15cyclictest0-21swapper/019:15:120
16975991918,1cyclictest13999-21apache223:02:170
16975991910,5cyclictest0-21swapper/020:40:200
16975991910,4cyclictest0-21swapper/023:40:150
16975991910,4cyclictest0-21swapper/023:10:110
16975991910,4cyclictest0-21swapper/019:20:560
16975991910,3cyclictest0-21swapper/022:40:110
16975991910,3cyclictest0-21swapper/020:00:110
16975991910,3cyclictest0-21swapper/019:30:130
1697599190,19cyclictest0-21swapper/023:38:570
1688421910,0sleep10-21swapper/119:10:011
1542621910,0sleep00-21swapper/023:17:080
934221810,0sleep00-21swapper/020:14:490
1697699184,8cyclictest0-21swapper/119:50:141
1697699183,10cyclictest0-21swapper/122:35:191
16976991814,3cyclictest16973-21cyclictest22:10:141
16976991810,4cyclictest0-21swapper/122:55:461
1697599185,3cyclictest11045-21/usr/sbin/munin21:40:220
1697599183,4cyclictest0-21swapper/019:45:150
16975991816,1cyclictest0-21swapper/021:55:140
16975991810,5cyclictest0-21swapper/022:50:120
16975991810,5cyclictest0-21swapper/021:16:240
16975991810,5cyclictest0-21swapper/020:05:190
16975991810,4cyclictest0-21swapper/020:45:150
16975991810,4cyclictest0-21swapper/020:20:170
16975991810,3cyclictest0-21swapper/000:37:070
16975991810,3cyclictest0-21swapper/000:15:040
16975991810,2cyclictest0-21swapper/019:25:130
1697599180,2cyclictest14876-21grep21:50:210
16976991715,2cyclictest0-21swapper/119:30:161
16976991713,3cyclictest18030-21df_inode23:25:131
16976991710,4cyclictest0-21swapper/120:10:221
16976991710,3cyclictest0-21swapper/123:00:121
1697599174,7cyclictest0-21swapper/022:05:160
1697599173,8cyclictest0-21swapper/000:34:320
1697599172,6cyclictest0-21swapper/021:30:160
16975991717,0cyclictest0-21swapper/021:10:190
16975991716,0cyclictest15581-21grep20:30:130
16975991710,3cyclictest0-21swapper/021:35:130
16975991710,3cyclictest0-21swapper/020:35:210
16975991710,2cyclictest0-21swapper/019:50:150
16975991710,1cyclictest0-21swapper/022:15:190
1697599170,7cyclictest0-21swapper/023:20:150
2452121610,0sleep00-21swapper/020:52:370
1697699162,7cyclictest0-21swapper/123:45:111
16976991610,3cyclictest0-21swapper/122:30:121
16976991610,3cyclictest0-21swapper/122:15:131
16976991610,3cyclictest0-21swapper/119:15:121
1697599163,1cyclictest17889-21/usr/sbin/munin19:10:190
1697599161,4cyclictest0-21swapper/023:05:140
16975991610,2cyclictest0-21swapper/023:50:120
16975991610,2cyclictest0-21swapper/021:05:120
16975991610,2cyclictest0-21swapper/019:55:130
1697699153,9cyclictest0-21swapper/120:20:131
1697699152,8cyclictest0-21swapper/100:20:161
16976991514,1cyclictest13973-21apache223:40:181
16976991512,2cyclictest16973-21cyclictest20:55:121
16976991510,1cyclictest0-21swapper/120:00:141
1697599151,2cyclictest9454-21/usr/sbin/munin00:25:190
16975991511,1cyclictest25169-21fschecks_count20:55:130
16975991510,2cyclictest0-21swapper/021:00:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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