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2026-05-09 - 01:42
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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 Fri May 08, 2026 12:44:32)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
94799911260,46cyclictest16846-21diskmemload12:21:370
94799911240,7cyclictest0-21swapper/009:47:110
9479991123,36cyclictest17628-21ssh09:56:510
94799911050,53cyclictest0-21swapper/007:12:100
94799911050,53cyclictest0-21swapper/007:12:100
94799911044,62cyclictest9468-21cyclictest12:27:110
94799911040,7cyclictest0-21swapper/011:57:010
94799910843,11cyclictest28028-21ssh12:02:190
94799910826,18cyclictest0-21swapper/011:16:370
94799910739,9cyclictest0-21swapper/010:01:580
94799910739,9cyclictest0-21swapper/010:01:580
94799910718,30cyclictest31153-21seq08:05:260
94799910645,55cyclictest0-21swapper/012:11:370
94799910639,59cyclictest0-21swapper/008:06:570
94799910532,11cyclictest0-21swapper/010:07:100
9489991043,89cyclictest32649-21apt-get10:21:551
94799910448,48cyclictest0-21swapper/011:53:000
94799910448,48cyclictest0-21swapper/011:53:000
94799910444,55cyclictest0-21swapper/009:12:110
94799910444,55cyclictest0-21swapper/009:12:110
94799910444,53cyclictest0-21swapper/009:36:580
9479991044,32cyclictest11249-21munin-node09:31:440
9479991044,32cyclictest11249-21munin-node09:31:440
94799910442,9cyclictest9287-21sh09:42:040
94799910442,9cyclictest9287-21sh09:42:040
94799910438,7cyclictest0-21swapper/009:22:130
94799910438,7cyclictest0-21swapper/009:22:130
9479991043,38cyclictest18041-21timerandwakeup09:02:110
9479991043,34cyclictest879-21cpu12:11:500
9479991033,32cyclictest21448-21latency_hist07:36:380
9479991031,50cyclictest9439-21fschecks_time10:36:570
94949910246,9cyclictest0-21swapper/207:52:072
94949910246,9cyclictest0-21swapper/207:52:072
9479991023,38cyclictest2882-21unin-run10:26:360
9479991023,35cyclictest28812-21modprobe09:21:340
94949910139,13cyclictest0-21swapper/210:12:012
9479991014,35cyclictest9468-21cyclictest07:01:400
9489991004,86cyclictest21741-21cron11:52:371
9489991004,86cyclictest21741-21cron11:52:371
9479991004,34cyclictest3058-21munin-plugin-st11:21:340
9479991004,28cyclictest12216-21/usr/sbin/munin08:47:100
94799910040,11cyclictest15429-21ssh11:41:530
9479991003,38cyclictest12949-21/usr/sbin/munin11:37:080
9479991003,34cyclictest8261-21runrttasks08:32:100
9479991003,32cyclictest5986-21latency_hist10:31:380
9479991003,31cyclictest26794-21fschecks_time10:11:570
94799910033,12cyclictest0-21swapper/010:57:090
94799910026,16cyclictest0-21swapper/008:42:100
947999993,34cyclictest24959-21grep11:02:110
947999993,34cyclictest24959-21grep11:02:110
947999992,33cyclictest2269-21latency_hist08:16:380
947999992,33cyclictest14891-21latency_hist10:46:380
9494999843,9cyclictest0-21swapper/209:10:532
9494999833,12cyclictest0-21swapper/210:22:462
947999984,31cyclictest25489-21mailstats07:47:080
947999983,38cyclictest26904-21sort11:06:440
947999983,35cyclictest26436-21/usr/sbin/munin07:52:010
947999983,35cyclictest26436-21/usr/sbin/munin07:52:010
947999983,35cyclictest18351-21/usr/sbin/munin07:27:030
947999983,34cyclictest9745-21kernelversion11:32:000
947999983,32cyclictest9632-21/usr/sbin/munin07:01:520
947999983,32cyclictest6143-21cat11:26:370
947999983,32cyclictest32104-21/usr/sbin/munin09:27:110
947999982,36cyclictest11677-21/usr/sbin/munin07:07:060
949499974,33cyclictest15697-21fschecks_count08:56:562
949499973,40cyclictest31422-21sort08:06:382
947999973,35cyclictest15405-21mailstats09:52:090
947999973,35cyclictest15405-21mailstats09:52:090
947999973,32cyclictest4558-21ls08:21:590
947999973,32cyclictest16117-21unixbench_singl10:47:130
9479999731,9cyclictest0-21swapper/011:46:550
947999972,35cyclictest28926-21grep07:57:110
947999972,30cyclictest15589-21cstates08:56:520
9494999670,18cyclictest19676-21snmpd08:41:562
949499963,44cyclictest12716-21grep09:47:122
947999964,31cyclictest6027-21fschecks_time08:26:570
947999963,33cyclictest32299-21ls10:21:370
947999963,33cyclictest32299-21ls10:21:370
947999963,31cyclictest23198-21/usr/sbin/munin07:41:550
947999963,31cyclictest10520-21latency_hist08:41:380
947999962,35cyclictest21827-21fschecks_count07:36:560
947999962,32cyclictest6899-21cstates12:21:510
947999962,32cyclictest6899-21cstates12:21:510
947999953,34cyclictest20239-21sort09:06:520
947999953,31cyclictest6384-21fschecks_count10:31:560
947999944,32cyclictest16744-21/usr/sbin/munin07:22:010
947999943,33cyclictest15280-21latency_hist08:56:370
947999943,33cyclictest15280-21latency_hist08:56:370
947999943,32cyclictest352-21runrttasks10:53:280
947999943,32cyclictest352-21runrttasks10:53:280
9494999337,11cyclictest0-21swapper/209:22:002
9494999337,11cyclictest0-21swapper/209:22:002
9494999312,34cyclictest5544-21latency_hist09:36:382
9494999312,34cyclictest5544-21latency_hist09:36:382
947999934,36cyclictest8990-21munin-run11:31:350
947999934,36cyclictest8990-21munin-run11:31:350
947999923,32cyclictest4060-21latency_hist08:21:380
947999923,32cyclictest4060-21latency_hist08:21:380
947999922,34cyclictest15294-21cstates07:17:210
9494999042,10cyclictest0-21swapper/211:53:142
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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