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2026-06-03 - 23:01
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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
Compare latency of primary with shadow system
Characteristics of the 50 highest latencies:
System rackbslot7.osadl.org (updated Wed Jun 03, 2026 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
126639912758,60cyclictest0-21swapper/011:54:530
126639912758,60cyclictest0-21swapper/011:54:530
12519211714,67sleep112554-21munin-run06:59:511
12663991123,29cyclictest12537-21latency_hist06:59:540
126639911145,61cyclictest0-21swapper/010:05:120
126639911038,10cyclictest26507-21ntp_kernel_pll_09:10:180
12663991094,27cyclictest15053-21find09:45:240
126639910829,7cyclictest0-21swapper/009:50:150
12663991063,29cyclictest8326-21taskset12:16:330
126809910552,46cyclictest544-21cron11:39:502
12670991032,23cyclictest16097-21seq08:46:461
126639910335,8cyclictest0-21swapper/008:40:140
126639910332,8cyclictest0-21swapper/007:10:180
12663991032,51cyclictest15727-21ssh11:35:070
12663991022,42cyclictest6443-21latency_hist11:19:520
126639910135,8cyclictest0-21swapper/010:25:210
126639910135,8cyclictest0-21swapper/010:25:210
12663991013,41cyclictest31172-21mailstats12:00:250
12663991013,33cyclictest24042-21ssh10:54:500
12663991013,33cyclictest24042-21ssh10:54:500
126639910119,26cyclictest4539-21open_inodes12:10:210
126639910039,54cyclictest0-21swapper/007:40:070
126639910035,58cyclictest30659-21kernelversion11:05:150
126639910035,58cyclictest30659-21kernelversion11:05:150
12663991002,30cyclictest25140-21switchtime10:55:260
1266399994,32cyclictest5962-21latency_hist10:24:530
12663999938,55cyclictest23931-21sh10:00:210
12663999937,56cyclictest21847-21ssh09:02:460
12663999934,10cyclictest0-21swapper/011:59:190
1266399993,30cyclictest19388-21unixbench_multi10:45:270
12663999932,10cyclictest0-21swapper/011:00:280
12663999932,10cyclictest0-21swapper/011:00:280
12663999931,8cyclictest0-21swapper/008:39:510
12663999931,8cyclictest0-21swapper/008:39:510
1266399992,25cyclictest10544-21ssh10:30:550
12663999919,24cyclictest31981-21cat09:20:060
12663999919,24cyclictest31981-21cat09:20:060
1266399984,28cyclictest27857-21cpuspeed07:45:070
1266399983,37cyclictest25507-21grep07:35:270
1266399983,32cyclictest12626-21/usr/sbin/munin11:30:240
1266399983,28cyclictest9159-21mailstats09:35:230
1266399982,31cyclictest32411-21apt-key10:14:540
12663999813,29cyclictest10733-21wc12:20:260
1267099973,27cyclictest16018-21seq07:07:141
1267099973,27cyclictest16018-21seq07:07:141
1267099972,30cyclictest25716-21ssh10:04:091
1266399974,36cyclictest6676-21/usr/sbin/munin11:20:130
1266399973,31cyclictest12733-21/usr/sbin/munin12:25:220
1266399972,42cyclictest24065-21runrttasks11:49:380
1266399972,31cyclictest32514-21/usr/sbin/munin10:16:320
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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