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2026-09-02 - 13:41
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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 rackdslot0.osadl.org (updated Wed Sep 02, 2026 00:46:02)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
521999310,18cyclictest0-21swapper/121:10:271
522399220,18cyclictest0-21swapper/223:45:082
521999220,4cyclictest0-21swapper/123:10:301
521999220,4cyclictest0-21swapper/123:10:301
522399204,15cyclictest0-21swapper/220:15:562
522399201,2cyclictest31313-21nvmesmart_nvme020:50:182
5219992017,2cyclictest0-21swapper/121:33:551
521999200,19cyclictest426-21systemd-udevd19:20:521
521999200,19cyclictest426-21systemd-udevd19:20:521
522399193,15cyclictest22142-21sensors_temp00:20:212
5223991917,1cyclictest0-21swapper/223:36:182
5223991917,1cyclictest0-21swapper/223:36:182
5223991917,1cyclictest0-21swapper/222:42:202
522399191,1cyclictest0-21swapper/222:15:192
522399190,15cyclictest0-21swapper/219:11:412
521999190,1cyclictest27565-21perf19:50:011
521999190,18cyclictest843-21systemd-network21:57:521
521499193,15cyclictest0-21swapper/020:01:200
521499192,16cyclictest0-21swapper/019:10:160
5214991916,2cyclictest27668-21cut19:50:010
521499191,17cyclictest2800-21pluginstate21:00:010
521499190,1cyclictest0-21swapper/021:38:270
521499190,18cyclictest0-21swapper/022:13:360
5223991816,1cyclictest3983-21H222:10:212
5223991816,1cyclictest19578-21cat00:15:222
5223991815,2cyclictest16258-21nfsd400:10:182
5223991814,3cyclictest26542-21sendmail-mta20:42:112
5223991814,3cyclictest1348-21lxd20:14:352
522399181,2cyclictest399-20systemd-journal22:27:402
522399181,16cyclictest2957-21rtkit-daemon21:28:222
522399181,15cyclictest0-21swapper/221:32:592
522399180,1cyclictest0-21swapper/223:25:122
522399180,16cyclictest3983-21H222:10:212
522399180,16cyclictest30919-21https19:55:022
521999182,1cyclictest21-21ksoftirqd/120:34:481
5219991816,1cyclictest3976-21H222:10:211
5219991815,2cyclictest31113-21nfsd423:40:171
5219991815,2cyclictest2605-21cron22:55:001
5219991814,3cyclictest6989-21ps19:10:211
521999180,3cyclictest24470-21sshd19:40:241
521999180,17cyclictest2007-21systemd-journal20:15:571
521999180,17cyclictest0-21swapper/123:30:131
521999180,16cyclictest3983-21H222:10:211
521999180,16cyclictest23109-21sshd20:35:351
521999180,16cyclictest23109-21sshd20:35:351
521999180,16cyclictest20749-21https23:25:011
521999180,16cyclictest11568-21munin-plugin-st23:10:001
521499182,1cyclictest0-21swapper/021:04:230
521499182,15cyclictest0-21swapper/000:00:270
5214991815,2cyclictest3989-21H222:10:210
521499180,3cyclictest5690-21perf23:00:000
521499180,3cyclictest15441-21grep19:25:180
521499180,15cyclictest3979-21H222:10:210
5223991715,1cyclictest0-21swapper/223:10:222
5223991715,1cyclictest0-21swapper/223:10:222
5223991715,1cyclictest0-21swapper/222:05:142
5223991715,1cyclictest0-21swapper/221:35:452
5223991715,1cyclictest0-21swapper/221:00:152
5223991714,2cyclictest9789-21sendmail_mailqu19:15:212
5223991714,2cyclictest6770-21cpuspeed_turbos23:55:122
5223991714,2cyclictest25135-21timerwakeupswit00:25:212
5223991714,2cyclictest18402-21/usr/sbin/munin20:30:192
5223991714,2cyclictest12886-21pluginstate22:15:002
522399170,2cyclictest4107-21munin-run22:00:002
522399170,2cyclictest4035-21H222:10:212
522399170,2cyclictest3989-21H222:10:212
522399170,2cyclictest32307-21python323:45:002
522399170,2cyclictest27109-21cut21:40:212
522399170,2cyclictest21114-21cron20:35:012
522399170,2cyclictest21114-21cron20:35:012
522399170,2cyclictest16581-21expr22:20:152
522399170,2cyclictest15863-21grep20:25:142
522399170,2cyclictest13872-21kernelversion20:20:172
522399170,16cyclictest3976-21H222:10:212
522399170,16cyclictest30859-21wc22:45:182
522399170,16cyclictest25282-21nvmesmart_nvme023:30:202
522399170,16cyclictest23100-21df_inode19:40:142
522399170,16cyclictest19994-21expr19:35:132
522399170,16cyclictest16269-21nvmesmart_nvme023:15:192
522399170,16cyclictest1558-21grep20:00:142
522399170,16cyclictest13821-21cron21:17:012
522399170,16cyclictest11110-21cron23:09:002
522399170,16cyclictest10707-21nvmesmart_nvme000:00:192
522399170,16cyclictest0-21swapper/223:00:122
522399170,16cyclictest0-21swapper/219:20:252
522399170,16cyclictest0-21swapper/219:20:252
521999172,15cyclictest21-21ksoftirqd/122:15:211
5219991714,2cyclictest8310-21fschecks_count22:05:161
5219991714,2cyclictest5182-21sh23:50:201
5219991714,2cyclictest4722-21cpuspeed_turbos20:05:131
5219991714,2cyclictest4388-21latency21:00:171
5219991714,2cyclictest4035-21H222:10:211
5219991714,2cyclictest3053-21systemd-logind22:22:511
5219991714,2cyclictest30499-21fschecks_count22:45:161
5219991714,2cyclictest24513-21grep00:25:181
5219991714,2cyclictest15892-21snapd20:10:581
5219991714,2cyclictest14496-21snapd23:17:401
5219991714,2cyclictest14495-21snapd20:20:291
5219991714,2cyclictest11832-21grep21:15:161
5219991714,2cyclictest0-21swapper/122:40:141
5219991713,3cyclictest3987-21H222:10:211
5219991713,3cyclictest0-21swapper/100:36:561
521999171,2cyclictest0-21swapper/100:30:391
5219991711,5cyclictest426-21systemd-udevd23:02:511
521999171,15cyclictest31154-21cpuspeed_turbos21:50:141
521999170,2cyclictest21946-21sessionclean19:39:001
521999170,2cyclictest17266-21expr19:30:161
521999170,2cyclictest1-21systemd20:02:531
521999170,2cyclictest10707-21cut22:10:141
521999170,1cyclictest111rcu_preempt22:30:171
521999170,1cyclictest0-21swapper/123:55:581
521999170,16cyclictest9408-21lxd21:22:351
521999170,16cyclictest448-21seq20:55:141
521999170,16cyclictest399-20systemd-journal00:10:001
521999170,16cyclictest3979-21H222:10:211
521999170,16cyclictest30802-21munin-plugin-st21:50:011
521999170,16cyclictest17347-21cron00:15:001
521999170,16cyclictest14680-21cat19:25:131
521999170,16cyclictest14550-21snapd21:40:281
521999170,16cyclictest0-21swapper/123:24:251
521999170,15cyclictest3989-21H222:10:211
521999170,15cyclictest3987-21H222:10:211
521499172,1cyclictest9-21ksoftirqd/023:42:370
5214991715,1cyclictest0-21swapper/022:02:250
5214991714,2cyclictest7605-21gpgv22:05:010
5214991714,2cyclictest4064-21expr23:50:130
5214991714,2cyclictest31299-21ntp_states20:50:180
5214991714,2cyclictest30404-21cat22:45:150
5214991714,2cyclictest27497-21cut00:30:210
5214991714,2cyclictest24673-21awk23:30:160
5214991714,2cyclictest21327-21cat00:20:150
5214991714,2cyclictest19537-21cat19:35:010
5214991714,2cyclictest17560-21expr21:25:120
5214991714,2cyclictest13669-21expr22:15:150
5214991714,2cyclictest13064-21switchtime19:20:230
5214991714,2cyclictest13064-21switchtime19:20:220
5214991714,2cyclictest0-21swapper/022:20:180
521499171,15cyclictest18791-21apt-get22:25:130
521499170,2cyclictest7439-21awk23:00:160
521499170,2cyclictest501-21grep19:55:250
521499170,2cyclictest31135-21cpuspeed_turbos21:50:150
521499170,2cyclictest28205-21sed20:45:180
521499170,2cyclictest27874-21wget22:40:150
521499170,2cyclictest15982-21grep21:20:200
521499170,2cyclictest15679-21/usr/sbin/munin20:25:210
521499170,2cyclictest1079-21cups-browsed20:15:210
521499170,1cyclictest0-21swapper/020:22:000
521499170,16cyclictest8948-21grep23:05:130
521499170,16cyclictest7773-21awk23:55:180
521499170,16cyclictest4126-21perf22:00:000
521499170,16cyclictest3983-21H222:10:210
521499170,16cyclictest3014-21munin-plugin-st22:55:010
521499170,16cyclictest30030-21grep00:35:180
521499170,16cyclictest26032-21expr21:40:130
521499170,16cyclictest24918-21fschecks_time22:35:150
521499170,16cyclictest23771-21cat00:25:130
521499170,16cyclictest22873-21awk22:30:210
521499170,16cyclictest19612-21run-parts23:20:220
521499170,16cyclictest19114-21expr00:15:190
521499170,16cyclictest10719-21switchtime21:10:200
521499170,16cyclictest1035-21thermald00:10:210
521499170,16cyclictest0-21swapper/021:31:380
521499170,16cyclictest0-21swapper/021:05:170
521499170,15cyclictest0-21swapper/019:15:220
5223991614,1cyclictest0-21swapper/222:55:132
5223991614,1cyclictest0-21swapper/222:50:152
5223991614,1cyclictest0-21swapper/221:50:142
5223991614,1cyclictest0-21swapper/221:45:152
5223991614,1cyclictest0-21swapper/220:55:142
5223991614,1cyclictest0-21swapper/220:45:152
5223991614,1cyclictest0-21swapper/200:35:142
5223991614,1cyclictest0-21swapper/200:05:142
5223991613,2cyclictest4035-21H222:10:212
522399160,1cyclictest14480-21/usr/sbin/munin21:20:152
522399160,1cyclictest0-21swapper/219:45:132
522399160,15cyclictest3911-21cpuspeed_turbos23:50:132
522399160,15cyclictest28036-21cat19:50:142
522399160,15cyclictest24488-21cstates22:35:132
522399160,15cyclictest21562-21ls22:30:142
522399160,15cyclictest17181-21apt-get23:20:012
522399160,15cyclictest0-21swapper/219:25:142
5219991614,1cyclictest9349-21cpu00:00:131
5219991614,1cyclictest17892-21fschecks_time21:25:131
5219991614,1cyclictest0-21swapper/120:40:141
5219991614,1cyclictest0-21swapper/119:50:141
5219991613,2cyclictest32429-21nfsd419:55:211
5219991613,2cyclictest25852-21/usr/sbin/munin22:35:211
5219991613,2cyclictest1856-21systemd-udevd22:26:521
521999160,1cyclictest0-21swapper/121:35:191
521999160,15cyclictest28519-21pzem_current23:35:201
521999160,15cyclictest28519-21pzem_current23:35:191
521999160,15cyclictest21560-21sed00:20:161
521999160,15cyclictest0-21swapper/120:25:161
5214991614,1cyclictest12892-21idleruntime23:10:150
5214991614,1cyclictest12892-21idleruntime23:10:150
5214991614,1cyclictest0-21swapper/019:50:140
5214991614,1cyclictest0-21swapper/019:40:130
5214991613,2cyclictest3981-21H222:10:210
5214991613,2cyclictest3981-21H222:10:210
5214991613,2cyclictest12192-21cpuspeed_turbos00:05:130
521499160,2cyclictest28885-21expr21:45:150
521499160,1cyclictest19708-21cpuspeed_turbos19:35:140
521499160,15cyclictest9-21ksoftirqd/021:15:140
521499160,15cyclictest18435-21chrt20:30:150
521499160,15cyclictest15841-21sed23:15:170
521499160,15cyclictest0-21swapper/023:25:030
521499160,15cyclictest0-21swapper/020:40:040
521499160,15cyclictest0-21swapper/020:35:160
521499160,15cyclictest0-21swapper/020:35:160
521999150,1cyclictest0-21swapper/120:50:181
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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