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2026-08-12 - 00:19
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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 rackcslot4.osadl.org (updated Tue Aug 11, 2026 12:44:55)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
21102342260184,20sleep00-21swapper/007:06:530
21101822260199,47sleep10-21swapper/107:06:201
2110726999388,4cyclictest2110264-21kworker/u8:207:29:250
211073299693,44cyclictest2277909-21apt-get11:55:171
136599680,31rtkit-daemon26-21ksoftirqd/110:37:550
211073299599,30cyclictest0-21swapper/108:07:081
136599590,4rtkit-daemon0-21swapper/012:09:481
2110732995850,6cyclictest2119392-21fwupd07:29:241
211073299582,7cyclictest2235335-21apt-get10:55:141
136599580,3rtkit-daemon1364-21rtkit-daemon10:25:320
211073299572,7cyclictest2220326-21apt-get10:35:141
211073299572,5cyclictest2189033-21apt-get09:50:141
211073299572,14cyclictest2177889-21apt-get09:35:171
136599570,3rtkit-daemon1364-21rtkit-daemon11:40:221
136599570,3rtkit-daemon1364-21rtkit-daemon10:16:590
211073299563,7cyclictest2181417-21apt-get09:40:121
211073299562,8cyclictest2288777-21apt-get12:10:151
136599560,4rtkit-daemon1364-21rtkit-daemon10:09:211
211073299559,31cyclictest0-21swapper/112:34:491
211073299553,6cyclictest2209914-21apt-get10:20:141
211073299551,4cyclictest2174201-21apt-get09:30:111
211073299543,6cyclictest2223929-21apt-get10:40:131
211073299541,7cyclictest2249645-21apt-get11:15:141
211073299541,6cyclictest2274495-21apt-get11:50:101
211073299540,9cyclictest2172189-21ssh09:26:031
136599540,7rtkit-daemon2191893-21chrt09:54:130
136599540,4rtkit-daemon0-21swapper/111:20:091
136599530,3rtkit-daemon1364-21rtkit-daemon10:34:281
211073299528,4cyclictest0-21swapper/109:23:261
211073299522,5cyclictest2246146-21apt-get11:10:141
211073299522,4cyclictest2281482-21apt-get12:00:131
211073299522,4cyclictest2263969-21apt-get11:35:121
211073299521,6cyclictest2185403-21apt-get09:45:141
211073299521,5cyclictest2292316-21apt-get12:15:131
211073299521,5cyclictest2292316-21apt-get12:15:131
211073299512,4cyclictest2257047-21apt-get11:25:141
211073299512,4cyclictest2231328-21apt-get10:50:161
211073299512,4cyclictest2231328-21apt-get10:50:151
211073299511,9cyclictest2227612-21df_inode10:45:161
211073299511,6cyclictest2114516-21ntp_states07:15:211
211073299511,5cyclictest2238840-21apt-get11:00:131
136599510,23rtkit-daemon1348-21sendmail-mta08:00:291
211073299502,6cyclictest2202997-21apt-get10:10:141
211073299502,5cyclictest2192442-21apt-get09:55:161
211073299501,8cyclictest2153433-21df_inode08:55:161
211073299501,8cyclictest2131378-21munin-run08:00:011
211073299501,8cyclictest2124193-21irqstats07:40:161
211073299501,5cyclictest2242258-21apt-get11:05:151
211073299501,10cyclictest2128370-21ntp_states07:50:221
211073299500,9cyclictest2115938-21df07:20:151
211073299500,8cyclictest2155984-21ntpq09:00:221
136599500,22rtkit-daemon2812-21urbackupserver:08:45:011
211073299494,5cyclictest2206359-21apt-get10:15:131
211073299493,7cyclictest2143393-21apt-get08:30:131
211073299492,3cyclictest2306438-21apt-get12:35:131
211073299491,11cyclictest2138252-21ntp_states08:15:211
211073299491,10cyclictest2162040-21ssh09:13:361
211073299490,9cyclictest2158961-21munin-run09:10:011
211073299490,8cyclictest2120281-21memory07:30:201
211073299490,7cyclictest2196490-21memory10:00:211
136599490,4rtkit-daemon1364-21rtkit-daemon09:30:070
136599490,23rtkit-daemon813-21snmpd08:13:271
211073299482,5cyclictest2125647-21apt-get07:45:141
211073299481,5cyclictest2158935-21diskmemload12:26:541
136599480,4rtkit-daemon1364-21rtkit-daemon08:29:061
211073299471,10cyclictest2271281-21df11:45:161
136599470,3rtkit-daemon1364-21rtkit-daemon11:57:120
211073299462,5cyclictest2213489-21apt-get10:25:141
211072699469,7cyclictest13-21ksoftirqd/009:50:010
136599460,16rtkit-daemon26-21ksoftirqd/107:24:200
211073299443,31cyclictest2163135-21appstreamcli09:15:041
211073299441,7cyclictest2812-21urbackupserver:12:20:121
211073299441,5cyclictest2158935-21diskmemload11:34:411
211072699439,8cyclictest13-21ksoftirqd/010:00:010
2110726994310,7cyclictest13-21ksoftirqd/008:49:590
22707092420,1chrt2270706-21sh11:44:500
136599420,3rtkit-daemon1364-21rtkit-daemon12:13:590
23061812410,4sleep00-21swapper/012:35:000
2110726994111,8cyclictest2163453-21apt-get09:15:260
211072699403,7cyclictest13-21ksoftirqd/008:35:000
136599400,5rtkit-daemon2252812-21apt-get11:20:030
211073299392,15cyclictest2121642-21apt-get07:35:141
211073299391,7cyclictest2145958-21memory08:35:191
211073299390,8cyclictest2151865-21memory08:50:191
211072699388,7cyclictest13-21ksoftirqd/007:55:000
211072699385,8cyclictest2170585-21apt-get09:25:130
211073299362,4cyclictest2111213-21apt-get07:10:131
211073299360,9cyclictest2148851-21taskset08:42:291
2110732993510,23cyclictest782-21runrttasks08:20:151
2110726993512,8cyclictest13-21ksoftirqd/012:30:010
2110726993511,8cyclictest13-21ksoftirqd/008:25:010
211072699346,7cyclictest2245479-21apt-get11:10:070
211072699343,7cyclictest2159204-21apt-get09:10:140
211072699342,6cyclictest13-21ksoftirqd/011:35:000
2110726993412,7cyclictest13-21ksoftirqd/009:40:000
2110726993411,8cyclictest13-21ksoftirqd/008:05:220
2110726993410,9cyclictest13-21ksoftirqd/011:00:020
136599340,3rtkit-daemon0-21swapper/108:27:260
211072699335,10cyclictest2203850-21ssh10:10:200
211072699333,7cyclictest13-21ksoftirqd/009:00:230
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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