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2026-05-07 - 18:35
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Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

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 rackbslot6.osadl.org (updated Thu May 07, 2026 12:43:31)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2722521670,3sleep33179699cyclictest09:26:103
2419921310,3sleep33179699cyclictest10:26:203
106891920,4ptp4l401ktimersoftd/308:27:013
128542770,4sleep13178499cyclictest08:56:091
212652700,2sleep10-21swapper/113:43:071
162782700,7sleep216276-21ssh12:00:542
306492650,1sleep10-21swapper/113:52:221
173752650,5sleep03177999cyclictest12:01:120
157702650,2sleep00-21swapper/012:00:030
44182630,2sleep20-21swapper/211:15:532
106891620,1ptp4l401ktimersoftd/312:42:533
38302610,2sleep00-21swapper/011:46:260
315552614,10sleep10-21swapper/108:29:111
106891590,1ptp4l401ktimersoftd/313:24:133
31796995644,6cyclictest41-21ksoftirqd/313:56:093
106891560,1ptp4l401ktimersoftd/311:00:453
325282550,1sleep30-21swapper/313:55:333
106891550,1ptp4l401ktimersoftd/312:09:103
31796995444,4cyclictest41-21ksoftirqd/311:26:063
106891540,1ptp4l401ktimersoftd/312:28:143
106891540,1ptp4l401ktimersoftd/312:22:083
31796995241,6cyclictest41-21ksoftirqd/312:31:053
31796995239,6cyclictest41-21ksoftirqd/313:16:083
3179099525,11cyclictest32260-21taskset08:31:032
315972524,36sleep20-21swapper/208:29:452
31796995140,5cyclictest41-21ksoftirqd/311:41:063
3179099514,12cyclictest22358-21cat09:16:082
3179099513,10cyclictest28356-21latency_hist12:45:562
3179099511,14cyclictest16195-21sed11:26:222
3179099511,13cyclictest20223-21head13:41:242
31796995039,5cyclictest41-21ksoftirqd/309:51:023
3179099504,10cyclictest19476-21awk12:36:122
3179099502,12cyclictest24247-21sed13:46:152
3179099491,13cyclictest19806-21fschecks_time09:11:042
236952490,2sleep00-21swapper/012:06:500
106891490,1ptp4l401ktimersoftd/309:23:453
31796994837,5cyclictest41-21ksoftirqd/311:36:053
3179099484,11cyclictest21678-21processes10:21:132
3179099483,12cyclictest12272-21cpuspeed_turbos08:56:032
3179099483,10cyclictest7999-21df_inode10:46:062
3179099481,20cyclictest28649-21fschecks_time13:51:122
3179099481,16cyclictest26425-21/usr/sbin/munin12:11:172
3179099481,13cyclictest7300-21sed08:45:502
3179099481,13cyclictest13222-21grep10:06:032
106891480,2ptp4l29458-21kworker/3:013:48:503
106891480,1ptp4l401ktimersoftd/310:50:163
3179099478,7cyclictest27230-21cat09:26:102
3179099473,11cyclictest32044-21missed_timers13:21:162
3179099472,12cyclictest16958-21df12:01:082
3179099471,12cyclictest14345-21cut13:36:132
3179099471,11cyclictest13034-21perl10:51:072
3179099470,14cyclictest32206-21cat12:16:122
3179099470,12cyclictest30676-21cat13:20:562
3179099470,12cyclictest10586-21cut08:51:072
106891470,1ptp4l401ktimersoftd/311:32:313
106891470,1ptp4l401ktimersoftd/311:02:213
31796994636,4cyclictest41-21ksoftirqd/310:01:033
31796994635,5cyclictest41-21ksoftirqd/311:21:033
3179099466,5cyclictest14341-21latency_hist11:25:532
3179099460,12cyclictest14709-21bc09:01:012
31796994533,6cyclictest41-21ksoftirqd/309:46:033
3179099450,17cyclictest2989-21load11:46:132
3179099450,13cyclictest15663-21/usr/sbin/munin10:11:192
3179099446,5cyclictest0-21swapper/211:40:532
3179099440,13cyclictest27462-21awk11:06:052
3179099435,6cyclictest24914-21diskmemload11:34:032
3179099431,8cyclictest8312-21snmp_o5powerctl11:51:202
3179099431,8cyclictest8312-21snmp_o5powerctl11:51:202
3179099431,17cyclictest24914-21diskmemload12:24:052
3179099431,16cyclictest2563-21if_err_ens308:35:542
31796994235,4cyclictest41-21ksoftirqd/312:51:003
31796994227,3cyclictest41-21ksoftirqd/312:15:593
31796994215,4cyclictest41-21ksoftirqd/310:00:513
3179099425,6cyclictest24914-21diskmemload11:00:512
31796994135,3cyclictest41-21ksoftirqd/313:26:003
3179099405,3cyclictest9304-21expr12:26:082
3179099403,9cyclictest26366-21memory10:31:112
3179699399,4cyclictest41-21ksoftirqd/310:36:203
31796993927,10cyclictest41-21ksoftirqd/313:06:243
31796993926,3cyclictest41-21ksoftirqd/311:46:093
3179099391,10cyclictest24914-21diskmemload13:07:382
106891390,1ptp4l401ktimersoftd/312:46:223
31796993812,4cyclictest41-21ksoftirqd/313:31:133
31796993812,4cyclictest41-21ksoftirqd/313:31:133
3179099387,7cyclictest2199-21snmp_o5powerctl13:56:222
106891380,1ptp4l401ktimersoftd/313:04:193
106891380,1ptp4l401ktimersoftd/310:52:303
106891380,1ptp4l401ktimersoftd/309:01:093
31796993726,9cyclictest41-21ksoftirqd/312:11:223
106891370,1ptp4l401ktimersoftd/313:15:463
106891370,1ptp4l401ktimersoftd/312:38:513
106891370,1ptp4l401ktimersoftd/311:19:493
106891370,1ptp4l401ktimersoftd/311:14:333
106891370,1ptp4l401ktimersoftd/311:07:013
106891370,1ptp4l401ktimersoftd/310:32:393
106891370,0ptp4l401ktimersoftd/313:36:563
106891370,0ptp4l401ktimersoftd/312:00:063
3179699367,4cyclictest41-21ksoftirqd/310:16:053
31796993626,7cyclictest41-21ksoftirqd/309:36:183
31796993622,5cyclictest41-21ksoftirqd/310:25:523
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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