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2026-04-02 - 00:03
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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 792 highest latencies:
System rackdslot0.osadl.org (updated Wed Apr 01, 2026 12:45:58)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
100399250,23cyclictest8173-21irqstats07:20:170
1004992320,2cyclictest13861-21grep08:30:021
100499230,20cyclictest0-21swapper/107:45:331
1005992221,0cyclictest2227-21mii-tool07:10:182
100599220,18cyclictest0-21swapper/209:34:592
100599220,18cyclictest0-21swapper/208:22:192
1004992214,4cyclictest0-21swapper/109:45:221
1003992218,3cyclictest22229-21munin-plugin-st11:34:590
100399220,18cyclictest0-21swapper/009:20:560
100599210,3cyclictest0-21swapper/209:27:132
100499219,10cyclictest0-21swapper/108:59:461
1004992117,3cyclictest0-21swapper/107:28:591
1004992116,4cyclictest0-21swapper/108:04:151
100399214,3cyclictest0-21swapper/010:02:110
100399210,3cyclictest0-21swapper/012:28:290
1005992016,3cyclictest0-21swapper/212:26:532
1005992016,3cyclictest0-21swapper/208:17:052
100399202,17cyclictest15879-21pzem11:20:210
100599192,2cyclictest4169-21switchtime11:55:222
100599192,2cyclictest14238-21grep12:15:162
100599192,16cyclictest5032-21cat10:05:182
100599192,16cyclictest27871-21run-parts08:52:002
100599192,16cyclictest25080-21expr07:50:182
100599192,16cyclictest0-21swapper/207:17:482
1005991916,2cyclictest6145-21latency12:00:162
1005991916,2cyclictest29451-21cat11:45:182
1005991916,2cyclictest17967-21if_lxdbr011:25:172
1005991915,3cyclictest0-21swapper/212:30:182
1005991915,3cyclictest0-21swapper/211:34:402
1005991914,4cyclictest2455-21cat08:10:012
100599190,2cyclictest0-21swapper/209:12:082
100599190,18cyclictest0-21swapper/211:15:122
100599190,16cyclictest22691-21cat07:45:212
100599190,15cyclictest0-21swapper/212:23:092
100499194,9cyclictest0-21swapper/110:15:151
100499194,0cyclictest0-21swapper/112:10:151
100499192,16cyclictest9844-21cat12:05:221
100499192,16cyclictest23293-21cat08:45:151
100499192,16cyclictest0-21swapper/111:11:571
100499192,16cyclictest0-21swapper/109:03:031
1004991916,2cyclictest25810-21cut11:40:001
1004991916,2cyclictest22621-21nfsd410:35:181
1004991916,2cyclictest1984-21cstates09:05:141
1004991916,2cyclictest1984-21cstates09:05:131
1004991916,2cyclictest0-21swapper/107:50:061
1004991916,1cyclictest0-21swapper/107:16:591
100399192,11cyclictest18002-21cut10:30:000
1003991913,5cyclictest843-21systemd-network11:13:010
100399191,15cyclictest0-21swapper/012:22:030
100599182,1cyclictest0-21swapper/211:00:212
100599182,15cyclictest23583-21switchtime09:40:212
1005991816,1cyclictest0-21swapper/207:21:232
1005991815,2cyclictest32296-21cat09:00:182
1005991815,2cyclictest16792-21cat11:25:002
1005991815,2cyclictest12087-21expr09:20:172
1005991814,3cyclictest11063-21sshd11:13:392
1005991814,3cyclictest0-21swapper/208:05:002
100599181,2cyclictest31768-21chrt10:51:122
100599181,2cyclictest31768-21chrt10:51:112
100599181,2cyclictest31065-21expr09:55:142
100599181,2cyclictest25505-21cat12:35:172
100599181,16cyclictest17286-21timerandwakeup10:25:232
100599181,16cyclictest15169-21expr08:30:152
100599180,3cyclictest22112-21/usr/sbin/munin10:35:162
100599180,17cyclictest26639-21munin-run10:45:012
100599180,17cyclictest15287-21latency_hist10:25:012
100599180,17cyclictest0-21swapper/210:11:582
100599180,17cyclictest0-21swapper/208:10:132
100499183,1cyclictest0-21swapper/109:18:321
1004991816,1cyclictest7820-21kernelversion10:10:181
1004991816,1cyclictest2707-21expr11:55:151
1004991816,1cyclictest19396-21latency_hist11:30:011
1004991816,1cyclictest0-21swapper/112:22:451
1004991813,2cyclictest7783-21expr07:20:151
100499181,2cyclictest18003-21cat07:40:011
100499181,16cyclictest2290-21munin-run08:10:001
100499180,17cyclictest24024-21postgres12:34:371
100399182,2cyclictest22309-21nfsd407:45:170
100399182,16cyclictest0-21swapper/011:43:270
1003991812,3cyclictest0-21swapper/012:40:000
100399180,17cyclictest870-21systemd-logind08:23:510
100399180,17cyclictest399-20systemd-journal09:55:460
1005991714,2cyclictest8132-21expr09:15:132
1005991714,2cyclictest32630-21expr10:55:142
1005991714,2cyclictest31531-21sh11:50:012
1005991714,2cyclictest28547-21grep08:55:152
1005991714,2cyclictest28291-21cat09:50:142
1005991714,2cyclictest27937-21if_lxdbr010:45:172
1005991714,2cyclictest2383-21sh10:00:192
1005991714,2cyclictest23205-21cat11:35:132
1005991714,2cyclictest20720-21ls08:40:132
1005991714,2cyclictest19480-21cstates09:35:132
1005991714,2cyclictest18400-21dpkg10:30:012
100599171,15cyclictest28-21ksoftirqd/207:35:012
100599171,15cyclictest12513-21sed08:25:182
100599170,2cyclictest7923-21awk12:05:112
100599170,2cyclictest11294-21ls12:10:132
100599170,2cyclictest10538-21expr07:25:142
100599170,16cyclictest7243-21grep11:05:192
100599170,16cyclictest26849-21cstates07:55:142
100599170,16cyclictest26487-21sort11:40:142
100599170,16cyclictest25965-21if_lxdbr009:45:182
100599170,16cyclictest24360-21grep08:45:182
100599170,16cyclictest18980-21fschecks_count07:40:132
100599170,16cyclictest18165-21/usr/sbin/munin08:35:162
100599170,16cyclictest1724-21apache_volume09:05:112
100599170,16cyclictest1724-21apache_volume09:05:112
100599170,16cyclictest13406-21fschecks_time07:30:172
100599170,16cyclictest10690-21load10:15:162
1004991717,0cyclictest0-21swapper/107:10:171
1004991715,1cyclictest6359-21expr11:05:151
1004991715,1cyclictest0-21swapper/109:30:151
1004991714,2cyclictest6661-21ps12:00:181
1004991714,2cyclictest4486-21mailstats08:10:201
1004991714,2cyclictest4485-21cstates10:05:151
1004991714,2cyclictest30039-21ps11:45:211
1004991714,2cyclictest29857-21/usr/sbin/munin10:50:131
1004991714,2cyclictest29857-21/usr/sbin/munin10:50:131
1004991714,2cyclictest25028-21/usr/sbin/munin10:40:141
1004991714,2cyclictest21660-21ntpq08:40:161
1004991714,2cyclictest20066-21ls11:30:151
1004991714,2cyclictest19544-21ls09:35:151
1004991714,2cyclictest19062-21grep07:40:131
1004991714,2cyclictest18223-21/usr/sbin/munin08:35:161
1004991714,2cyclictest15024-21expr08:30:141
1004991712,4cyclictest0-21swapper/109:55:151
100499171,15cyclictest280832sleep108:54:491
100499171,15cyclictest0-21swapper/112:25:131
100499170,2cyclictest8610-21cpuspeed_turbos08:20:141
100499170,2cyclictest32465-21/usr/sbin/munin10:55:151
100499170,2cyclictest26920-21cstates07:55:151
100499170,2cyclictest26672-21awk11:40:141
100499170,2cyclictest2563-21grep10:00:211
100499170,2cyclictest14294-21ls09:25:141
100499170,2cyclictest13725-21expr10:20:201
100499170,16cyclictest6551-21irqstats08:15:171
100499170,16cyclictest5612-21fschecks_time09:10:151
100499170,16cyclictest3634-21cstates11:00:151
100499170,16cyclictest28581-21cat09:50:171
100499170,16cyclictest27860-21iwlist10:45:181
100499170,16cyclictest24993-21cstates12:35:131
100499170,16cyclictest23864-21cat09:40:221
100499170,16cyclictest19001-21cstates10:30:121
100499170,16cyclictest15901-21find11:20:201
100499170,16cyclictest15476-21dpkg10:25:021
100499170,16cyclictest13876-21cat12:15:131
100499170,16cyclictest13166-21cstates07:30:151
100499170,16cyclictest12405-21/usr/sbin/munin11:15:151
100499170,16cyclictest10257-21gpgv09:20:011
1003991715,1cyclictest99842chrt12:06:530
1003991714,2cyclictest5968-21/usr/sbin/munin11:05:190
1003991714,2cyclictest29137-21grep09:50:180
1003991714,2cyclictest26049-21grep10:40:210
1003991714,2cyclictest22839-21awk09:40:170
1003991714,2cyclictest1523-21lxd08:06:400
1003991714,2cyclictest12516-21grep10:20:160
1003991714,2cyclictest11352-21expr12:10:140
100399171,15cyclictest3991-21H222:10:210
100399171,15cyclictest0-21swapper/011:55:150
100399170,2cyclictest870-21systemd-logind09:33:510
100399170,2cyclictest21577-21nfsd408:40:160
100399170,2cyclictest19011-21cstates10:30:130
100399170,2cyclictest15115-21expr08:30:150
100399170,2cyclictest14402-21/usr/sbin/munin12:15:160
100399170,1cyclictest0-21swapper/007:52:000
100399170,1cyclictest0-21swapper/007:12:020
100399170,16cyclictest32166-21expr11:50:150
100399170,16cyclictest23008-21tr10:35:210
100399170,16cyclictest19872-21/usr/sbin/munin09:35:170
100399170,16cyclictest1721-21apache_processe09:05:120
100399170,16cyclictest1721-21apache_processe09:05:120
100399170,16cyclictest16827-21ntpq07:35:190
100399170,16cyclictest16749-21snapd11:25:180
100399170,16cyclictest16744-21snapd09:04:520
100399170,16cyclictest1521-21lxd12:02:410
100399170,16cyclictest12864-21cpuspeed_turbos07:30:140
100399170,15cyclictest0-21swapper/008:20:020
1004991614,1cyclictest0-21swapper/111:50:021
1003991614,1cyclictest0-21swapper/010:53:330
1003991614,1cyclictest0-21swapper/010:53:320
1003991614,1cyclictest0-21swapper/010:05:170
1003991614,1cyclictest0-21swapper/009:15:130
1003991614,1cyclictest0-21swapper/008:35:170
1003991614,1cyclictest0-21swapper/008:25:140
1003991614,1cyclictest0-21swapper/008:15:000
1003991614,1cyclictest0-21swapper/007:40:130
1003991614,1cyclictest0-21swapper/007:25:080
1003991613,2cyclictest7240-21cat10:10:140
100399160,1cyclictest0-21swapper/010:15:130
100399160,1cyclictest0-21swapper/009:45:230
100399160,1cyclictest0-21swapper/008:45:020
100399160,1cyclictest0-21swapper/007:55:180
100399160,15cyclictest5066-21expr09:10:140
100399160,15cyclictest4224-21latency11:00:170
100399160,15cyclictest29036-21expr11:45:150
100399160,15cyclictest27051-21apache_volume10:45:130
100399160,15cyclictest22926-21grep12:30:170
100399160,15cyclictest0-21swapper/009:25:120
100399160,15cyclictest0-21swapper/007:20:000
1003991513,1cyclictest0-21swapper/008:00:180
100399150,1cyclictest0-21swapper/010:55:140
100399150,15cyclictest0-21swapper/011:15:130
100399150,14cyclictest0-21swapper/008:50:130
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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