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2026-07-02 - 09:42
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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 100 highest latencies:
System rackdslot3.osadl.org (updated Thu Jul 02, 2026 00:45:41)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
139491237170,22phc2sys0-21swapper/319:05:513
212122228163,22sleep00-21swapper/019:06:510
213802207174,22sleep20-21swapper/219:08:192
214392202170,21sleep10-21swapper/119:09:061
3258921350,3sleep32180499cyclictest00:00:153
21803996611,11cyclictest27845-21cut21:35:212
21803996610,11cyclictest7229-21needreboot19:45:222
2180399659,11cyclictest5580-21taskset23:05:012
2180399659,11cyclictest17788-21sort22:20:262
2180399658,11cyclictest11842-21fschecks_count22:10:142
21803996511,18cyclictest15116-21df_abs21:10:122
2180399639,11cyclictest23296-21sed23:40:172
21803996210,11cyclictest23044-21cut21:25:192
76322610,4sleep32180499cyclictest00:15:153
2180399619,10cyclictest10734-21date19:55:012
2180399618,11cyclictest3488-21latency_hist19:40:012
2180399618,11cyclictest12964-21latency_hist20:00:002
2180399609,12cyclictest4146-21find21:55:022
2180399609,11cyclictest25026-21irqrtprio19:15:192
2180399609,10cyclictest10413-21mailstats22:05:232
2180399608,11cyclictest27753-21tune2fs23:50:142
2180399608,11cyclictest17624-21cut21:15:162
2180399608,10cyclictest26690-21cpuspeed_turbos19:20:122
2180399608,10cyclictest10356-21df_abs21:00:132
2180399599,11cyclictest1948-21sed00:05:002
2180399599,10cyclictest21311-21apache223:30:002
2180399598,11cyclictest21588-21cat23:35:272
2180399598,11cyclictest15110-21cat23:25:012
21803995910,11cyclictest25160-21expr23:45:122
21803995910,10cyclictest0-21swapper/220:40:262
2180399589,15cyclictest4238-21ptp4l20:45:242
2180399588,11cyclictest17422-21irqrtprio00:35:182
2180399588,11cyclictest17422-21irqrtprio00:35:182
21803995812,11cyclictest29855-21head20:30:262
139391580,1ptp4l22611-21ls22:30:263
2180399579,7cyclictest30854-21timerandwakeup21:40:262
2180399579,11cyclictest23470-21cat19:10:272
2180399578,16cyclictest13872-21cat21:05:232
2180399569,12cyclictest8121-21sed22:00:232
2180399569,11cyclictest13309-21sed00:25:262
2180399568,17cyclictest31311-21/usr/sbin/munin19:30:142
2180399568,12cyclictest21080-21ptp4l-jitter21:20:212
2180399567,9cyclictest9660-21cat23:10:252
2180399566,10cyclictest0-21swapper/223:55:232
2180399559,16cyclictest449-21dbus-daemon22:35:232
2180399558,17cyclictest10960-21timerandwakeup00:20:262
21803995511,10cyclictest13321-21cpuspeed_turbos20:00:132
167722550,2sleep10-21swapper/120:05:211
2180399549,19cyclictest4804-21sed19:40:212
2180399549,13cyclictest15600-21apt-get20:05:102
161492540,2sleep016151-21awk21:10:220
134391540,6getstats2180499cyclictest23:48:393
2180399534,17cyclictest0-21swapper/200:10:202
2180399518,10cyclictest0-21swapper/223:15:232
2180399517,14cyclictest31687-21apt-get21:45:122
21801995121,4cyclictest9-21ksoftirqd/019:15:190
2180399509,10cyclictest20762-21dpkg20:15:122
2180399507,18cyclictest0-21swapper/220:25:262
139391500,1ptp4l401ktimersoftd/322:51:173
40632490,1sleep30-21swapper/300:07:133
2180399498,7cyclictest15353-21ls22:15:242
2180399467,7cyclictest8057-21diskstats20:55:152
2180299462,10cyclictest25-21ksoftirqd/119:55:161
2180399458,7cyclictest24517-21ls20:20:202
2180199455,9cyclictest9-21ksoftirqd/021:10:000
21804994438,4cyclictest1020-21cron19:34:593
2180399446,7cyclictest15208-21ls00:30:182
313732420,1sleep031376-21cut22:50:210
21804994237,3cyclictest29451-21cron23:55:013
21802994238,2cyclictest25-21ksoftirqd/123:20:001
21802994236,3cyclictest25-21ksoftirqd/123:35:001
2180399418,8cyclictest29466-21perl19:25:162
2180299416,2cyclictest25-21ksoftirqd/123:00:011
139391410,0ptp4l401ktimersoftd/320:50:183
139391410,0ptp4l401ktimersoftd/319:35:253
2180399407,7cyclictest2451-21df_inode00:05:192
2180399407,7cyclictest18173-21iostat23:30:182
21802994035,3cyclictest25-21ksoftirqd/121:20:011
21802994015,11cyclictest25-21ksoftirqd/100:20:001
21801994036,2cyclictest9-21ksoftirqd/020:35:000
21801994025,3cyclictest9-21ksoftirqd/022:25:130
21801994023,4cyclictest9-21ksoftirqd/019:20:220
139391400,33ptp4l0-21swapper/319:10:013
139391400,0ptp4l401ktimersoftd/321:48:103
139391400,0ptp4l401ktimersoftd/320:15:183
21804993933,3cyclictest8224-21cron19:50:013
2180299398,3cyclictest25-21ksoftirqd/100:10:151
2180299397,3cyclictest25-21ksoftirqd/120:15:231
2180299397,3cyclictest25-21ksoftirqd/100:00:181
21801993933,4cyclictest9-21ksoftirqd/022:10:120
21801993933,3cyclictest9-21ksoftirqd/023:29:590
21801993927,3cyclictest9-21ksoftirqd/023:55:190
21801993927,3cyclictest9-21ksoftirqd/023:30:180
21801993925,4cyclictest9-21ksoftirqd/020:55:250
21801993925,3cyclictest9-21ksoftirqd/019:55:230
21801993924,4cyclictest9-21ksoftirqd/020:25:140
21801993924,4cyclictest9-21ksoftirqd/000:10:280
21801993924,3cyclictest9-21ksoftirqd/021:35:190
21801993923,4cyclictest9-21ksoftirqd/022:15:250
21801993923,4cyclictest9-21ksoftirqd/020:05:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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