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2026-06-20 - 16:16
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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 Sat Jun 20, 2026 12:46:07)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
7447992927,1cyclictest0-21swapper/010:25:020
745699230,5cyclictest271rcuc/207:16:162
744799230,5cyclictest0-21swapper/008:11:570
744799220,18cyclictest0-21swapper/007:44:580
7456992119,1cyclictest28-21ksoftirqd/208:50:012
745199210,17cyclictest0-21swapper/112:37:171
744799214,16cyclictest14417-21gpgconf08:20:010
744799210,3cyclictest0-21swapper/009:43:190
744799210,18cyclictest0-21swapper/010:18:030
745699203,11cyclictest17378-21updatedb.mlocat08:25:012
745699203,11cyclictest17378-21updatedb.mlocat08:25:002
745699202,17cyclictest0-21swapper/211:30:142
745699200,19cyclictest399-20systemd-journal12:02:422
745199204,15cyclictest0-21swapper/110:21:181
744799204,15cyclictest0-21swapper/008:35:030
744799203,16cyclictest14193-21sh11:09:000
744799203,16cyclictest0-21swapper/010:24:040
744799202,17cyclictest0-21swapper/012:09:130
744799202,17cyclictest0-21swapper/011:15:140
7447992017,2cyclictest8119-21cpuspeed_turbos10:00:130
7447992016,1cyclictest0-21swapper/011:20:200
7456991916,2cyclictest10896-21cpuspeed_turbos10:05:142
745699190,1cyclictest0-21swapper/209:55:182
745199192,16cyclictest16596-21cstates10:15:141
744799192,2cyclictest7067-21grep10:55:160
744799192,2cyclictest22666-21expr12:20:140
744799192,16cyclictest32628-21expr11:40:180
744799192,16cyclictest11568-21interrupts12:00:160
744799192,16cyclictest0-21swapper/010:06:430
7447991916,2cyclictest21195-21cpuspeed_turbos08:30:120
7447991913,1cyclictest0-21swapper/009:20:160
744799191,17cyclictest0-21swapper/009:47:050
744799190,1cyclictest0-21swapper/010:33:500
744799190,18cyclictest522-21latency_hist12:40:010
744799190,18cyclictest4272-21fschecks_count08:55:160
744799190,17cyclictest0-21swapper/011:01:290
744799190,16cyclictest28174-21latency_hist09:40:010
7456991818,0cyclictest0-21swapper/210:15:122
7456991816,1cyclictest28-21ksoftirqd/209:14:262
7456991816,1cyclictest271rcuc/210:10:192
7456991816,1cyclictest0-21swapper/211:45:492
7456991815,2cyclictest28-21ksoftirqd/207:40:012
7456991815,2cyclictest28-21ksoftirqd/207:40:012
745699181,2cyclictest16659-21expr12:10:132
745699180,15cyclictest0-21swapper/208:40:212
745199182,15cyclictest21-21ksoftirqd/111:15:131
7451991816,1cyclictest23762-21cron07:39:021
7451991816,1cyclictest23762-21cron07:39:011
7451991815,2cyclictest2904-21fschecks_count09:50:141
7451991815,2cyclictest1321-21perf11:45:001
7451991815,2cyclictest0-21swapper/111:20:131
745199181,2cyclictest993-21dbus-daemon10:35:211
745199181,2cyclictest22307-21cut08:30:171
7451991812,4cyclictest0-21swapper/107:10:161
745199181,16cyclictest32361-21apt-key08:50:001
745199181,16cyclictest27135-21open_files09:35:191
745199180,17cyclictest1786-21needreboot10:45:171
745199180,15cyclictest0-21swapper/108:05:011
745199180,15cyclictest0-21swapper/108:05:001
744799182,1cyclictest9-21ksoftirqd/009:19:560
744799182,1cyclictest2351-21sed08:50:220
744799182,1cyclictest2351-21sed08:50:210
744799182,1cyclictest0-21swapper/010:12:280
744799182,15cyclictest2514-21cron08:00:000
744799182,15cyclictest0-21swapper/010:45:010
744799182,15cyclictest0-21swapper/010:00:000
744799182,15cyclictest0-21swapper/008:45:010
7447991817,1cyclictest9-21ksoftirqd/011:25:180
7447991815,2cyclictest27499-21cut10:35:130
7447991815,2cyclictest23566-21chrt07:37:500
7447991815,2cyclictest23566-21chrt07:37:490
7447991815,2cyclictest20851-21chrt07:32:530
7447991814,3cyclictest25358-21date09:35:000
7447991814,3cyclictest14505-21snapd10:45:240
744799181,2cyclictest22525-21chrt09:29:300
744799181,16cyclictest10380-21sed12:00:000
744799180,4cyclictest17833-21munin-run08:25:010
744799180,4cyclictest17833-21munin-run08:25:000
744799180,3cyclictest31421-21wc07:50:210
744799180,3cyclictest21071-21apt-config12:15:460
744799180,3cyclictest21071-21apt-config12:15:450
744799180,1cyclictest0-21swapper/012:27:150
744799180,17cyclictest6702-21/usr/sbin/munin11:50:210
744799180,17cyclictest14813-21wc07:20:210
745699172,1cyclictest4100-21H222:10:212
7456991716,1cyclictest28-21ksoftirqd/211:40:172
7456991715,2cyclictest271rcuc/209:20:212
7456991715,1cyclictest8389-21sed08:09:022
7456991715,1cyclictest28-21ksoftirqd/211:05:152
7456991715,1cyclictest28-21ksoftirqd/208:10:152
7456991715,1cyclictest28-21ksoftirqd/207:29:002
7456991715,1cyclictest271rcuc/208:00:212
7456991715,1cyclictest271rcuc/208:00:212
7456991715,1cyclictest24719-21expr07:40:152
7456991715,1cyclictest0-21swapper/209:30:132
7456991714,2cyclictest6902-21expr09:00:142
7456991714,2cyclictest26678-21sed09:35:172
7456991714,2cyclictest24915-21expr10:30:142
7456991714,2cyclictest20292-21needreboot10:20:182
745699171,1cyclictest9535-21mailstats10:00:222
745699171,15cyclictest7769-21ntp_offset10:55:182
745699171,15cyclictest3991-21H222:10:212
745699171,15cyclictest28-21ksoftirqd/211:22:322
745699171,15cyclictest28-21ksoftirqd/210:40:152
745699171,15cyclictest28-21ksoftirqd/209:30:012
745699171,15cyclictest28-21ksoftirqd/207:30:112
745699171,15cyclictest271rcuc/210:45:132
745699171,15cyclictest17082-21taskset09:19:552
745699171,15cyclictest154352chrt07:23:262
745699171,15cyclictest0-21swapper/208:29:062
745699171,15cyclictest0-21swapper/208:29:052
745699170,2cyclictest32384-21taskset09:45:122
745699170,2cyclictest29008-21/usr/sbin/munin09:40:212
745699170,2cyclictest15086-21expr11:10:122
745699170,2cyclictest13233-21tr08:15:202
745699170,1cyclictest0-21swapper/211:51:542
745699170,1cyclictest0-21swapper/211:35:152
745699170,1cyclictest0-21swapper/207:12:112
745699170,16cyclictest9318-21ntp_states11:55:192
745699170,16cyclictest3450-21gsd-color12:20:202
745699170,16cyclictest29461-21sed12:30:202
745699170,16cyclictest2911-21fschecks_time09:50:142
745699170,16cyclictest28280-21nfsd407:45:182
745699170,16cyclictest28004-21lxd12:38:432
745699170,16cyclictest14501-21snapd08:34:282
745699170,16cyclictest13594-21grep12:05:152
745699170,16cyclictest1146-21cut08:50:152
745699170,16cyclictest1146-21cut08:50:142
745699170,16cyclictest0-21swapper/208:55:202
7451991715,1cyclictest0-21swapper/112:20:161
7451991715,1cyclictest0-21swapper/109:59:571
7451991715,1cyclictest0-21swapper/108:05:161
7451991714,2cyclictest9383-21ps11:55:191
7451991714,2cyclictest7445-21missed_timers10:55:171
7451991714,2cyclictest3985-21H222:10:211
7451991714,2cyclictest3979-21H222:10:211
7451991714,2cyclictest28043-21cat12:30:131
7451991714,2cyclictest25697-21nfsd407:40:191
7451991714,2cyclictest25184-21fschecks_count10:30:131
7451991714,2cyclictest21182-21irqstats09:25:181
7451991714,2cyclictest16854-21expr12:10:121
7451991714,2cyclictest16715-21postgres11:10:321
7451991714,2cyclictest13151-21pzem_energy08:15:201
7451991714,2cyclictest1-21systemd09:09:001
7451991714,2cyclictest11855-21apache_processe11:05:121
7451991713,2cyclictest24332-21ntp_kernel_pll_11:25:171
745199170,2cyclictest8251-21cstates10:00:141
745199170,2cyclictest4761-21cat10:50:181
745199170,2cyclictest31153-21munin-run11:40:001
745199170,2cyclictest22379-21expr10:25:151
745199170,2cyclictest16867-21cron09:17:001
745199170,2cyclictest13565-21/usr/sbin/munin10:10:121
745199170,2cyclictest11628-21uname10:05:181
745199170,16cyclictest9653-21expr11:00:131
745199170,16cyclictest6443-21cpu09:00:131
745199170,16cyclictest5320-21cpuspeed_turbos11:50:141
745199170,16cyclictest5131-21sed11:50:011
745199170,16cyclictest445-21apache_processe08:50:121
745199170,16cyclictest445-21apache_processe08:50:121
745199170,16cyclictest31962-21cpuspeed_turbos09:45:121
745199170,16cyclictest24237-21grep08:35:151
745199170,16cyclictest18184-21fschecks_count09:20:131
745199170,16cyclictest18051-21https08:25:021
745199170,16cyclictest18051-21https08:25:021
745199170,16cyclictest17390-21package-data-do08:25:001
745199170,16cyclictest17390-21package-data-do08:25:001
745199170,16cyclictest1513-21expr07:55:191
744799178,5cyclictest0-21swapper/008:00:160
744799178,5cyclictest0-21swapper/008:00:160
7447991714,2cyclictest9737-21df09:05:140
7447991714,2cyclictest6623-21cut09:00:130
7447991714,2cyclictest10911-21expr07:15:140
744799170,2cyclictest8274-21cstates07:10:150
744799170,2cyclictest4009-21sed09:50:210
744799170,2cyclictest28382-21chrt11:35:050
744799170,2cyclictest26260-21expr11:30:140
744799170,2cyclictest1935-21apt-config11:45:010
744799170,2cyclictest18217-21chrt07:29:080
744799170,2cyclictest18099-21gpgv08:25:020
744799170,2cyclictest18099-21gpgv08:25:010
744799170,2cyclictest15079-21cstates11:10:130
744799170,1cyclictest0-21swapper/012:10:130
744799170,16cyclictest4014-21expr10:50:150
744799170,16cyclictest30618-21if_lxdbr008:45:170
744799170,16cyclictest28124-21expr12:30:120
744799170,16cyclictest27071-21apache_processe07:45:130
744799170,16cyclictest13862-21sed09:10:210
744799170,16cyclictest0-21swapper/008:05:130
7456991615,1cyclictest28-21ksoftirqd/212:25:122
7456991614,1cyclictest28-21ksoftirqd/212:15:132
7456991614,1cyclictest28-21ksoftirqd/212:15:132
7456991614,1cyclictest0-21swapper/210:25:122
7456991614,1cyclictest0-21swapper/207:55:152
7456991614,1cyclictest0-21swapper/207:50:142
745699160,15cyclictest0-21swapper/211:00:152
745699160,15cyclictest0-21swapper/210:50:172
745699160,15cyclictest0-21swapper/210:35:222
745699160,15cyclictest0-21swapper/209:05:152
745699160,15cyclictest0-21swapper/208:35:022
7451991614,1cyclictest13547-21expr07:20:131
7451991614,1cyclictest0-21swapper/112:15:211
7451991614,1cyclictest0-21swapper/112:15:211
7451991614,1cyclictest0-21swapper/109:10:061
7451991614,1cyclictest0-21swapper/108:55:111
7451991614,1cyclictest0-21swapper/108:10:131
7451991614,1cyclictest0-21swapper/107:45:151
7451991613,2cyclictest27003-21apache_accesses08:40:121
745199160,1cyclictest0-21swapper/112:05:161
745199160,15cyclictest24967-21taskset09:30:461
745199160,15cyclictest19304-21df_inode07:30:151
745199160,15cyclictest0-21swapper/112:00:111
745199160,15cyclictest0-21swapper/111:30:141
745199160,15cyclictest0-21swapper/110:40:141
745199160,15cyclictest0-21swapper/107:30:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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