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2026-05-17 - 20:23
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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 100 highest latencies:
System rackbslot7.osadl.org (updated Sun May 17, 2026 12:44:35)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
985821590,19sleep00-21swapper/006:56:450
9272213312,81sleep29322-21fschecks_count06:56:272
106059911594,9cyclictest0-21swapper/111:01:171
106059911594,9cyclictest0-21swapper/111:01:171
10594991153,47cyclictest18753-21apt-get09:01:480
10594991153,47cyclictest18753-21apt-get09:01:480
105949911377,29cyclictest26080-21sh11:01:170
105949911377,29cyclictest26080-21sh11:01:170
10594991112,28cyclictest6803-21ssh12:16:310
105949910952,50cyclictest298-21in:imuxsock09:56:000
105949910952,50cyclictest298-21in:imuxsock09:56:000
10594991092,49cyclictest14367-21/usr/sbin/munin10:41:260
10594991079,73cyclictest12664-21fw_packets07:06:060
10594991073,27cyclictest18583-21sh10:48:300
10594991054,27cyclictest352-21runrttasks09:10:110
10594991033,22cyclictest989-21/usr/sbin/munin12:06:340
105949910323,67cyclictest161ktimers/007:16:120
106109910234,34cyclictest0-21swapper/208:06:312
10594991014,25cyclictest29728-21sh09:19:400
10594991012,23cyclictest11579-21/usr/sbin/munin11:31:090
106059910013,44cyclictest22360-21sh10:01:181
10594991003,34cyclictest352-21runrttasks12:28:260
10594991003,34cyclictest352-21runrttasks12:28:260
10594991003,27cyclictest22294-21/usr/sbin/munin10:02:170
1059499994,38cyclictest19100-21ssh09:56:140
1059499993,32cyclictest6403-21munin-plugin-st08:25:580
1059499993,29cyclictest11742-21/usr/sbin/munin08:41:190
1059499984,27cyclictest352-21runrttasks07:43:190
1059499984,27cyclictest352-21runrttasks07:43:190
1059499983,26cyclictest10959-21seq10:36:170
1059499983,26cyclictest10959-21seq10:36:170
1059499982,39cyclictest14323-21grep08:46:370
1059499982,36cyclictest18421-21switchtime11:41:340
10594999747,44cyclictest2374-21systemd-journal10:20:100
1059499973,32cyclictest9259-21cstates12:21:160
1059499972,30cyclictest352-21runrttasks11:00:370
1059499972,29cyclictest12308-21cat07:06:020
10594999712,29cyclictest19697-21latency_hist07:26:390
10594999712,29cyclictest19697-21latency_hist07:26:390
10594999710,12cyclictest0-21swapper/009:40:270
1059499964,26cyclictest5820-21modprobe12:15:580
1059499964,26cyclictest5820-21modprobe12:15:580
1059499963,35cyclictest24846-21fschecks_time09:11:210
1059499963,35cyclictest24846-21fschecks_time09:11:210
1059499963,30cyclictest14999-21ssh11:36:240
1059499963,30cyclictest14999-21ssh11:36:240
1059499963,28cyclictest32765-21find11:11:330
1059499963,28cyclictest23587-21/usr/sbin/munin11:51:370
1059499963,28cyclictest20001-21df10:51:180
1059499963,26cyclictest29573-21/usr/sbin/munin12:01:340
1059499963,26cyclictest29573-21/usr/sbin/munin12:01:340
1059499963,19cyclictest29033-21apt-get11:06:160
1059499962,30cyclictest10962-21timerandwakeup09:41:350
1059499962,30cyclictest10962-21timerandwakeup09:41:350
1059499962,29cyclictest27498-21timerandwakeup11:56:340
1061099954,50cyclictest0-21swapper/207:41:212
1061099954,50cyclictest0-21swapper/207:41:212
1061099953,51cyclictest6893-21apt-get08:26:222
1061099953,51cyclictest6893-21apt-get08:26:222
10610999528,36cyclictest1261-21sh10:20:212
10594999545,44cyclictest17117-21ntp_kernel_pll_08:56:270
1059499954,29cyclictest8597-21ssh11:26:140
1059499954,29cyclictest8597-21ssh11:26:140
1059499953,31cyclictest3714-21fschecks_time08:16:220
1059499953,31cyclictest3714-21fschecks_time08:16:220
1059499953,31cyclictest352-21runrttasks11:19:110
1059499953,31cyclictest352-21runrttasks11:19:110
1059499953,29cyclictest2537-21/usr/sbin/munin10:21:320
1059499953,29cyclictest2537-21/usr/sbin/munin10:21:320
1059499953,27cyclictest352-21runrttasks07:31:220
1059499953,26cyclictest27814-21/usr/sbin/munin07:51:280
1059499952,27cyclictest1822-21/usr/sbin/munin08:11:360
1059499952,27cyclictest1822-21/usr/sbin/munin08:11:360
1059499952,24cyclictest16106-21grep07:16:010
1059499952,22cyclictest27158-21ssh10:08:460
1059499943,33cyclictest5841-21unixbench_multi10:26:350
1059499943,29cyclictest3965-21latency_hist09:31:030
1059499943,28cyclictest5835-21grep11:21:220
1059499942,30cyclictest26177-21/usr/sbin/munin07:46:200
1059499942,30cyclictest26177-21/usr/sbin/munin07:46:200
10610999347,39cyclictest10337-21cut08:36:212
10610999347,39cyclictest10337-21cut08:36:212
10610999335,48cyclictest2602-21sensors10:21:332
10610999335,48cyclictest2602-21sensors10:21:332
1059499933,29cyclictest14095-21unixbench_multi09:46:360
1059499933,28cyclictest706-21ntp_kernel_pll_08:06:260
1059499933,27cyclictest32377-21modprobe08:05:590
1059499933,22cyclictest8048-21/usr/sbin/munin10:31:210
1059499932,30cyclictest4633-21ntp_kernel_err09:31:290
1059499932,30cyclictest10124-21/usr/sbin/munin08:36:350
1059499932,30cyclictest10124-21/usr/sbin/munin08:36:350
1059499932,28cyclictest6875-21/usr/sbin/munin08:26:370
1059499932,28cyclictest6875-21/usr/sbin/munin08:26:370
1059499931,39cyclictest23100-21rm11:50:330
1059499923,30cyclictest28500-21ssh10:11:190
1061099913,74cyclictest0-21swapper/208:46:122
10610999126,37cyclictest0-21swapper/210:01:292
10610999120,35cyclictest23088-21sh11:50:312
1059499913,24cyclictest31519-21/usr/sbin/munin09:21:360
1059499913,23cyclictest31008-21cat08:01:030
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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