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2026-08-05 - 17:24
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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 376 highest latencies:
System rackdslot0.osadl.org (updated Wed Aug 05, 2026 12:45:59)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
8463992414,1cyclictest0-21swapper/207:13:272
846399240,19cyclictest0-21swapper/211:00:002
845899242,21cyclictest0-21swapper/108:35:111
8458992413,3cyclictest0-21swapper/111:00:001
845799241,2cyclictest0-21swapper/010:40:180
845799241,2cyclictest0-21swapper/010:40:180
845799240,0cyclictest0-21swapper/009:58:380
846399230,5cyclictest0-21swapper/212:05:282
846399230,5cyclictest0-21swapper/208:47:062
8458992317,5cyclictest0-21swapper/112:09:211
8458992317,5cyclictest0-21swapper/109:43:201
845899230,2cyclictest31164-21python310:40:001
845899230,16cyclictest25031-21ls08:50:021
8457992317,1cyclictest0-21swapper/008:15:480
845899221,16cyclictest21775-21latency_hist08:30:011
8457992219,2cyclictest6795-21php7.012:39:000
846399214,6cyclictest0-21swapper/212:00:542
846399214,10cyclictest0-21swapper/207:35:232
845899210,16cyclictest9010-21grep11:45:181
845899210,16cyclictest1085-21gdbus07:40:001
846399207,9cyclictest0-21swapper/207:30:232
8463992014,3cyclictest0-21swapper/211:05:142
8463992014,3cyclictest0-21swapper/211:05:142
8458992016,3cyclictest0-21swapper/111:25:001
8458992013,1cyclictest0-21swapper/107:44:581
845799204,15cyclictest0-21swapper/007:27:020
8463991917,1cyclictest0-21swapper/211:57:192
846399190,3cyclictest0-21swapper/211:18:032
846399190,1cyclictest0-21swapper/209:21:502
846399190,18cyclictest0-21swapper/207:30:022
8458991916,2cyclictest14495-21snapd11:50:271
845899190,18cyclictest0-21swapper/107:20:031
845799193,15cyclictest0-21swapper/009:23:400
845799192,16cyclictest0-21swapper/010:37:080
8457991919,0cyclictest0-21swapper/008:27:230
845799191,11cyclictest31335-21latency_hist09:30:000
845799190,2cyclictest2577-21systemd11:18:180
845799190,0cyclictest0-21swapper/009:18:070
846399182,15cyclictest414-21taskset11:30:202
8463991816,1cyclictest0-21swapper/208:25:592
8463991816,1cyclictest0-21swapper/208:19:512
8463991815,2cyclictest3735-21timerandwakeup11:35:222
8463991814,3cyclictest4692-21grep09:50:142
8463991813,4cyclictest843-21systemd-network09:07:342
846399180,3cyclictest26685-21sed12:15:222
846399180,3cyclictest15892-21snapd09:47:582
846399180,2cyclictest3979-21H222:10:212
846399180,17cyclictest843-21systemd-network10:49:302
846399180,17cyclictest7833-21dpkg10:55:012
846399180,17cyclictest12962-21cut10:05:182
845899182,15cyclictest0-21swapper/107:29:521
8458991816,1cyclictest0-21swapper/109:50:121
8458991815,2cyclictest28272-21sort10:35:001
8458991815,2cyclictest13445-21cpuspeed_turbos11:55:121
845799182,15cyclictest26209-21cstates11:20:150
845799182,15cyclictest0-21swapper/011:35:180
845799182,15cyclictest0-21swapper/008:20:450
845799180,3cyclictest26810-21latency_hist09:00:000
8463991715,1cyclictest0-21swapper/212:35:142
8463991714,2cyclictest800-21chrt12:29:192
8463991714,2cyclictest3985-21H222:10:212
8463991714,2cyclictest26569-21perf09:00:002
8463991714,2cyclictest15689-21cat10:10:162
8463991714,2cyclictest10592-21switchtime10:00:222
846399171,15cyclictest843-21systemd-network07:40:032
846399171,15cyclictest0-21swapper/209:17:572
846399170,2cyclictest4035-21H222:10:212
846399170,2cyclictest4035-21H222:10:212
846399170,2cyclictest2801-21ntpq12:30:202
846399170,2cyclictest24187-21cat12:14:552
846399170,2cyclictest23131-21apache_accesses10:25:112
846399170,2cyclictest14295-21chrt07:45:042
846399170,16cyclictest993-21dbus-daemon12:20:022
846399170,16cyclictest993-21dbus-daemon12:20:022
846399170,16cyclictest7686-21/usr/sbin/munin11:45:132
846399170,16cyclictest4023-21PluginScanner09:55:372
846399170,16cyclictest31089-21chrt09:26:422
846399170,16cyclictest28191-21awk10:35:002
846399170,16cyclictest26154-21cstates11:20:142
846399170,16cyclictest20863-21expr10:20:132
846399170,16cyclictest20710-21run-parts08:25:012
846399170,16cyclictest18448-21date08:10:012
846399170,16cyclictest12218-21sed11:00:172
846399170,16cyclictest11145-21fschecks_time11:50:132
8458991716,1cyclictest21-21ksoftirqd/109:40:011
8458991714,2cyclictest8892-21apache_accesses10:00:121
8458991714,2cyclictest5015-21df12:35:161
8458991714,2cyclictest3350-21irqstats10:45:161
8458991714,2cyclictest22233-21expr12:10:131
8458991714,2cyclictest20983-21ntpq11:15:211
8458991714,2cyclictest20522-21cpuspeed_turbos10:20:131
8458991713,3cyclictest26391-21smtpd08:58:111
845899171,15cyclictest195162sleep108:15:451
845899170,2cyclictest5400-21expr11:40:131
845899170,2cyclictest528-21missed_timers10:40:181
845899170,2cyclictest528-21missed_timers10:40:181
845899170,2cyclictest3983-21H222:10:211
845899170,2cyclictest32387-21chrt09:33:301
845899170,2cyclictest30079-21processes11:25:211
845899170,2cyclictest26317-21nfsd412:15:181
845899170,2cyclictest2535-21cat12:30:181
845899170,2cyclictest20658-21gzip08:25:001
845899170,2cyclictest2007-21systemd-journal07:16:291
845899170,2cyclictest18643-21dpkg08:10:011
845899170,2cyclictest1523-21lxd07:32:441
845899170,2cyclictest14566-21df_inode11:05:161
845899170,2cyclictest14566-21df_inode11:05:151
845899170,2cyclictest11949-21sed10:05:021
845899170,16cyclictest988-21irqbalance07:15:011
845899170,16cyclictest7695-21/usr/sbin/munin09:55:241
845899170,16cyclictest5559-21cpuspeed_turbos10:50:141
845899170,16cyclictest3414-21master09:46:241
845899170,16cyclictest32087-21idleruntime11:30:161
845899170,16cyclictest30439-21proxymap12:23:411
845899170,16cyclictest30439-21proxymap12:23:411
845899170,16cyclictest29926-21cut09:20:001
845899170,16cyclictest19039-21smtpd11:13:361
845899170,16cyclictest17647-21apache_processe10:15:121
845899170,16cyclictest16239-21nfsd410:10:181
845899170,16cyclictest14506-21snapd08:42:581
845899170,16cyclictest11817-21df11:00:131
845899170,16cyclictest0-21swapper/111:35:121
845899170,16cyclictest0-21swapper/109:10:261
845899170,15cyclictest3979-21H222:10:211
8457991715,1cyclictest29351-21sed11:25:160
8457991715,1cyclictest135562chrt07:40:200
8457991715,1cyclictest0-21swapper/007:15:170
8457991714,2cyclictest9897-21cat10:00:190
8457991714,2cyclictest7715-21apt-get11:45:130
8457991714,2cyclictest7655-21cron10:55:000
8457991714,2cyclictest5411-21expr11:40:130
8457991714,2cyclictest30787-21anvil11:31:510
8457991714,2cyclictest3069-21/usr/sbin/munin12:30:210
8457991714,2cyclictest26474-21fschecks_count10:30:160
8457991713,3cyclictest14500-21snapd09:47:590
845799171,1cyclictest14083-21cat11:55:140
845799171,15cyclictest22958-21cat12:10:180
845799170,2cyclictest8819-21chrt07:11:130
845799170,2cyclictest8671-21grep10:55:130
845799170,2cyclictest25995-21latency_hist08:55:010
845799170,2cyclictest1844-21chrt09:44:180
845799170,2cyclictest1526-21lxd07:32:430
845799170,2cyclictest15019-21load11:05:180
845799170,2cyclictest15019-21load11:05:180
845799170,2cyclictest14504-21snapd08:42:580
845799170,2cyclictest13180-21basename07:40:000
845799170,2cyclictest11708-21grep11:50:160
845799170,1cyclictest4099-21H222:10:210
845799170,16cyclictest3979-21H222:10:210
845799170,16cyclictest3550-21expr09:50:100
845799170,16cyclictest32026-21dpkg09:30:010
845799170,16cyclictest25392-21cat12:15:140
845799170,16cyclictest23138-21apache_volume10:25:120
845799170,16cyclictest18918-21awk10:15:180
845799170,16cyclictest18511-21cut12:05:000
845799170,16cyclictest16173-21chrt07:59:500
845799170,16cyclictest0-21swapper/012:09:200
845799170,16cyclictest0-21swapper/010:05:030
845799170,16cyclictest0-21swapper/009:39:000
845799170,15cyclictest3987-21H222:10:210
8463991614,1cyclictest31352-21apt-get09:30:012
8463991614,1cyclictest14495-21snapd08:40:292
8463991614,1cyclictest0-21swapper/210:35:152
8463991614,1cyclictest0-21swapper/209:15:012
8463991614,1cyclictest0-21swapper/208:52:392
8463991614,1cyclictest0-21swapper/207:58:442
8463991614,1cyclictest0-21swapper/207:51:122
8463991614,1cyclictest0-21swapper/207:20:482
8463991613,2cyclictest1-21systemd09:39:002
846399160,1cyclictest28620-21apt-get11:25:132
846399160,16cyclictest0-21swapper/208:03:562
846399160,15cyclictest4099-21H222:10:212
846399160,15cyclictest230012chrt08:36:442
846399160,15cyclictest17146-21expr11:10:132
846399160,15cyclictest0-21swapper/210:15:182
846399160,15cyclictest0-21swapper/208:10:012
8458991614,1cyclictest3985-21H222:10:211
8458991613,2cyclictest31031-21/usr/sbin/munin12:25:131
845899160,1cyclictest3987-21H222:10:211
845899160,1cyclictest0-21swapper/110:25:111
845899160,1cyclictest0-21swapper/109:25:061
845899160,1cyclictest0-21swapper/109:25:001
845899160,1cyclictest0-21swapper/108:53:451
845899160,15cyclictest0-21swapper/109:10:011
845899160,15cyclictest0-21swapper/107:50:011
8457991616,0cyclictest0-21swapper/011:10:200
8457991614,1cyclictest20390-21apache_accesses10:20:120
8457991614,1cyclictest0-21swapper/012:20:120
8457991614,1cyclictest0-21swapper/012:20:120
8457991614,1cyclictest0-21swapper/009:05:010
8457991614,1cyclictest0-21swapper/008:11:360
8457991614,1cyclictest0-21swapper/008:08:590
8457991613,2cyclictest28252-21cron09:14:560
845799160,1cyclictest0-21swapper/007:50:010
845799160,15cyclictest25039-21perf08:50:010
845799160,15cyclictest14501-21snapd07:20:280
845799160,15cyclictest0-21swapper/011:00:110
845799160,15cyclictest0-21swapper/010:45:110
845799160,15cyclictest0-21swapper/009:07:050
845799160,15cyclictest0-21swapper/008:35:010
845799160,15cyclictest0-21swapper/007:52:330
845799160,0cyclictest0-21swapper/008:35:110
8463991515,0cyclictest0-21swapper/209:03:222
8463991513,1cyclictest0-21swapper/209:41:452
8458991513,1cyclictest2725-21gnome-shell09:00:091
8458991512,2cyclictest3989-21H222:10:211
845899140,0cyclictest0-21swapper/108:05:431
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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