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2026-04-14 - 09:35

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #5, slot #4

Rack #0/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #1/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #2/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #3/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #4/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #5/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #6/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #7/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #8/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #9/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #a/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #b/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #c/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #d/#0 #1 #2 #3 #4 #5 #6 #7 #8 -
Rack #e/#0 #1 #2 #3 #4 #5 #6 #7 #8 - Rack #f/#0 #1 #2 #3 #4 #5 #6 #7 #8 
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  Intel
Click here to display the system's profile data or here to proceed to next system.
Click on a legend element to toggle display of that core, ctrl-click inverts display, shift-click enables all.

Data to construct the above plot have been generated using the RT test utility cyclictest.

Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: ondemand
Compare latency of primary with shadow system
Characteristics of the 792 highest latencies:
System rack5slot4s.osadl.org (updated Tue Apr 14, 2026 00:44:15)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
226245521980,2sleep3481ktimers/321:51:223
232025021940,5sleep30-21swapper/322:50:013
2098967996340,9cyclictest280-21systemd-journal20:08:591
2098969995446,5cyclictest2399820-21cat00:10:012
22798762530,1sleep02279879-21cut22:06:320
2098963995039,8cyclictest2221271-21kworker/u8:0+flush-8:021:31:300
2098967994741,4cyclictest2298435-21kworker/u8:3+flush-8:023:11:301
2098967994740,5cyclictest2295382-21latency_hist22:25:011
2098967994537,5cyclictest2419741-21latency_hist00:30:011
2098967994535,8cyclictest2289588-21ntpq22:16:271
2098967994435,6cyclictest280-21systemd-journal22:39:581
2098963994435,6cyclictest2130257-21kworker/u8:2+flush-8:019:56:190
21433222430,2sleep3481ktimers/319:51:233
2098967994335,6cyclictest2241125-21/usr/sbin/munin21:31:261
2098963994337,4cyclictest2130257-21kworker/u8:2+flush-8:020:06:190
20942152424,10sleep10-21swapper/119:05:511
22359312410,2sleep3481ktimers/321:25:013
2098963994135,4cyclictest2279091-21kworker/u8:1+events_unbound00:16:300
2098963994133,6cyclictest2279091-21kworker/u8:1+flush-8:023:26:220
2098963994133,6cyclictest2269799-21ntpq21:56:260
2098967994032,6cyclictest280-21systemd-journal19:40:591
2098967994031,6cyclictest2414814-21awk00:25:001
2098967994030,7cyclictest280-21systemd-journal19:39:161
2098963994034,4cyclictest1257490-21kworker/u8:1+flush-8:021:06:190
2098963994030,7cyclictest2196069-21kworker/u8:2+flush-8:021:36:290
2098963994029,7cyclictest280-21systemd-journal22:55:000
2098967993933,4cyclictest2275617-21awk22:05:001
2098963993933,4cyclictest1267827-21kworker/u8:0+flush-8:019:46:190
2098963993726,7cyclictest2196069-21kworker/u8:2+flush-8:021:46:150
2098963993725,8cyclictest2185934-21apt-get20:35:000
2098967993630,4cyclictest280-21systemd-journal21:45:001
2098967993630,4cyclictest2256207-21apt-get21:46:131
2098967993628,6cyclictest2279091-21kworker/u8:1+flush-8:022:41:291
2098967993628,6cyclictest2106118-21apt-get19:16:141
2098967993628,5cyclictest280-21systemd-journal00:31:591
2098963993625,9cyclictest2130982-21systemd-hiberna19:39:300
2098969993424,6cyclictest2275624-21cat22:05:002
2098967993429,3cyclictest2115228-21timerwakeupswit19:21:341
2098963993429,4cyclictest2130257-21kworker/u8:2+flush-8:019:41:300
2098963993425,6cyclictest280-21systemd-journal20:25:000
2098967993328,3cyclictest1267827-21kworker/u8:0+flush-8:019:51:341
2098967993327,4cyclictest2250537-21journal-offline21:38:231
2098963993326,5cyclictest2369739-21cron23:39:590
2098963993324,7cyclictest2334073-21ntpq23:01:260
2098969993225,5cyclictest2136292-21base6419:45:012
2098967993226,4cyclictest2210840-21cron21:00:001
2098967993225,5cyclictest2216067-21kworker/u8:3+flush-8:021:26:311
2098967993225,5cyclictest2136679-21apt-get19:46:141
2098963993227,3cyclictest2415177-21aten2_r5power_c00:26:140
2098963993223,6cyclictest2349718-21latency_hist23:20:010
22583692310,2sleep3481ktimers/321:46:243
2098969993126,4cyclictest2110722-21sh19:20:002
2098967993127,2cyclictest2175716-21unixbench_multi20:21:351
2098967993126,3cyclictest2364474-21unixbench_singl23:31:341
2098967993125,4cyclictest2125553-21cron19:35:001
2098963993127,3cyclictest2221271-21kworker/u8:0+flush-8:021:41:180
2098963993124,4cyclictest2279091-21kworker/u8:1+events_unbound23:31:330
2098963993121,8cyclictest280-21systemd-journal20:50:000
2098967993024,4cyclictest2398849-21needreboot00:06:331
2098967993024,4cyclictest2330319-21apt-get23:01:131
2098967993024,4cyclictest2185934-21apt-get20:35:011
2098967993020,8cyclictest2329093-21ntpq22:56:261
2098963993025,4cyclictest1257490-21kworker/u8:1+flush-8:020:56:310
2098963993023,4cyclictest280-21systemd-journal23:10:590
2098963993020,7cyclictest2290424-21latency_hist22:20:000
2098967992924,3cyclictest2300854-21cpuspeed_turbos22:31:161
2098967992924,3cyclictest2261854-21irqrtprio21:51:201
2098967992924,3cyclictest2118153-21kthreadcore19:26:211
2098967992923,4cyclictest2429533-21unixbench_singl00:36:341
2098967992923,4cyclictest2235577-21unixbench_singl21:21:571
2098967992922,5cyclictest280-21systemd-journal22:47:591
2098963992925,3cyclictest2221271-21kworker/u8:0+flush-8:021:16:310
2098963992925,2cyclictest0-21swapper/020:19:590
2098963992924,3cyclictest2420396-21aten2_r5power_p00:31:150
2098963992923,4cyclictest1267827-21kworker/u8:0+events_unbound19:51:320
2098963992922,5cyclictest2314287-21ntpq22:41:280
2098963992922,5cyclictest2216067-21kworker/u8:3+flush-8:021:11:250
2098963992920,6cyclictest2329958-21latency_hist23:00:010
2098963992919,7cyclictest280-21systemd-journal19:30:380
2098969992823,3cyclictest2201699-21fschecks_time20:51:192
2098969992823,3cyclictest2201699-21fschecks_time20:51:192
2098969992822,4cyclictest2384913-21apt-get23:56:142
2098967992824,2cyclictest0-21swapper/123:50:001
2098967992823,3cyclictest0-21swapper/122:26:201
2098967992822,4cyclictest2167198-21kthreadcore20:16:201
2098967992820,6cyclictest2279091-21kworker/u8:1+flush-8:000:16:281
2098967992819,7cyclictest280-21systemd-journal22:51:591
2098967992819,6cyclictest280-21systemd-journal20:26:591
2098967992819,6cyclictest2389483-21latency_hist00:00:011
2098963992820,5cyclictest2384960-21cut23:56:160
2098963992820,3cyclictest2279091-21kworker/u8:1+flush-8:000:22:040
2098963992814,10cyclictest280-21systemd-journal20:15:000
2098969992723,2cyclictest2335587-21fschecks_time23:06:192
2098969992723,2cyclictest2335587-21fschecks_time23:06:192
2098969992723,2cyclictest2120258-21grep19:26:322
2098969992722,3cyclictest2281116-21cpuspeed_turbos22:11:162
2098967992721,5cyclictest1267827-21kworker/u8:0+flush-8:020:11:221
2098967992721,4cyclictest2349721-21awk23:20:011
2098967992721,4cyclictest2280248-21unixbench_singl22:06:341
2098967992721,4cyclictest2220700-21unixbench_singl21:06:341
2098967992720,5cyclictest2359630-21latency_hist23:30:011
2098967992720,5cyclictest2185089-21ntpq20:31:271
2098967992718,6cyclictest280-21systemd-journal21:57:591
2098963992723,3cyclictest2335386-21aten2_r5power_v23:06:170
2098963992723,3cyclictest2335386-21aten2_r5power_v23:06:160
2098963992719,5cyclictest2305269-21latency_hist22:35:010
20986612272,5sleep00-21swapper/019:08:190
2098969992623,2cyclictest2359292-21unixbench_singl23:26:342
2098969992622,3cyclictest2290042-21unixbench_multi22:16:342
2098969992622,2cyclictest2104065-21latency_hist19:15:012
2098969992621,3cyclictest2151732-21tr20:01:162
2098969992621,3cyclictest2145831-21unixbench_multi19:51:342
2098969992619,5cyclictest2216041-21cat21:05:002
2098969992619,5cyclictest2216041-21cat21:05:002
2098967992622,2cyclictest0-21swapper/120:41:221
2098967992617,7cyclictest2102999-21ntpq19:11:251
2098963992622,2cyclictest0-21swapper/022:30:010
2098963992620,4cyclictest2279091-21kworker/u8:1+events_unbound00:06:380
2098963992620,4cyclictest2205610-21unixbench_singl20:51:350
2098963992620,4cyclictest2205610-21unixbench_singl20:51:350
2098963992620,4cyclictest1267827-21kworker/u8:0+flush-8:019:11:320
2098963992619,5cyclictest2279091-21kworker/u8:1+events_unbound23:41:300
2098967992520,3cyclictest2350302-21cpuspeed_turbos23:21:171
209896399252,15cyclictest583-21snmpd20:26:150
2098963992521,3cyclictest401-21dbus-daemon19:20:010
2098963992521,3cyclictest2394245-21unixbench_singl00:01:320
2098963992521,3cyclictest2285143-21unixbench_multi22:11:330
2098963992520,3cyclictest2380708-21irqrtprio23:51:230
2098963992520,3cyclictest2375576-21sort23:46:210
2098963992520,3cyclictest2298435-21kworker/u8:3+flush-8:022:36:200
2098963992519,3cyclictest0-21swapper/020:01:270
2098963992516,6cyclictest280-21systemd-journal21:22:590
2098969992420,3cyclictest2400543-21cpuspeed_turbos00:11:162
2098969992420,2cyclictest2383660-21needreboot23:51:272
2098969992420,2cyclictest2235862-21cron21:25:002
2098967992420,3cyclictest0-21swapper/122:15:001
2098967992420,2cyclictest0-21swapper/100:01:191
2098967992419,3cyclictest2370460-21cut23:41:181
2098967992419,3cyclictest0-21swapper/123:36:341
2098963992418,4cyclictest2221271-21kworker/u8:0+flush-8:021:51:320
2098963992414,8cyclictest2404043-21ntpq00:11:260
2098969992320,2cyclictest2375132-21aten2_r5power_p23:46:162
2098969992320,2cyclictest2186086-21base6420:35:002
2098969992319,2cyclictest2415203-21aten2_r5power_e00:26:152
209896999231,20cyclictest2329975-21sendmail22:59:592
2098967992319,2cyclictest0-21swapper/121:16:211
2098967992319,2cyclictest0-21swapper/120:46:311
2098967992318,3cyclictest0-21swapper/119:56:341
2098967992317,4cyclictest2205959-21true20:55:001
2098967992317,4cyclictest2205959-21true20:54:591
2098967992316,5cyclictest2339866-21latency_hist23:10:001
2098967992316,5cyclictest2339866-21latency_hist23:10:001
2098967992315,6cyclictest2156093-21latency_hist20:05:011
2098963992319,3cyclictest2298435-21kworker/u8:3+flush-8:023:21:440
2098963992319,3cyclictest1267827-21kworker/u8:0+flush-8:020:36:310
2098963992319,2cyclictest2111243-21cpuspeed19:21:170
2098963992318,3cyclictest2236932-21tr21:26:210
2098963992318,3cyclictest2196069-21kworker/u8:2+flush-8:022:00:060
2098963992317,3cyclictest0-21swapper/021:01:310
2098963992317,3cyclictest0-21swapper/021:01:310
22485332220,5chrt0-21swapper/321:36:253
209896999229,4cyclictest0-21swapper/221:56:232
2098969992219,2cyclictest2191540-21aten2_r5power_e20:41:172
2098969992218,2cyclictest2300922-21fschecks_count22:31:182
2098969992218,2cyclictest2236300-21aten2_r5power_p21:26:162
2098969992218,2cyclictest2156662-21cpuspeed_turbos20:06:172
2098969992217,3cyclictest0-21swapper/221:45:002
2098969992215,4cyclictest2310817-21tr22:41:192
21838622210,2sleep3481ktimers/320:31:243
209896999212,14cyclictest2166274-21apt-get20:16:132
209896999212,13cyclictest2295717-21apt-get22:26:152
2098969992116,3cyclictest0-21swapper/223:25:012
209896799217,5cyclictest0-21swapper/121:14:341
2098967992116,3cyclictest0-21swapper/123:51:251
2098967992115,4cyclictest0-21swapper/100:11:311
2098963992118,2cyclictest2427512-21kthreadcore00:36:240
2098963992117,3cyclictest1267827-21kworker/u8:0+events_unbound20:41:270
209896999203,2cyclictest23462302kthreadcore23:16:222
2098969992017,2cyclictest880-21mta-sts-daemon20:21:232
2098969992016,2cyclictest2265412-21unixbench_singl21:51:332
2098969992016,2cyclictest2165226-21grep20:11:302
2098969992011,7cyclictest2315947-21awk22:46:182
2098969992010,7cyclictest2114193-21tr19:21:252
2098967992012,6cyclictest0-21swapper/121:01:281
2098967992012,6cyclictest0-21swapper/121:01:281
2098963992012,6cyclictest2116258-21diskstats19:26:160
2098963992010,8cyclictest2319268-21ntpq22:46:260
20942262204,9sleep20-21swapper/219:06:002
20941872206,8sleep30-21swapper/319:05:283
209896999192,16cyclictest0-21swapper/222:06:322
209896999192,12cyclictest2120865-21apt-get19:30:382
2098969991916,2cyclictest2364422-21unixbench_multi23:31:342
2098969991915,2cyclictest2290842-21aten2_r5power_e22:21:162
2098969991915,2cyclictest0-21swapper/222:36:182
2098969991915,2cyclictest0-21swapper/200:20:002
2098969991914,3cyclictest2374340-21grep23:41:352
2098969991914,3cyclictest0-21swapper/221:00:002
2098969991911,6cyclictest2200247-21seq20:46:302
209896999189,6cyclictest2392159-21tr00:01:222
2098969991814,2cyclictest2330431-21aten2_r5power_v23:01:152
2098969991814,2cyclictest0-21swapper/223:11:322
2098969991814,2cyclictest0-21swapper/221:31:222
2098969991814,2cyclictest0-21swapper/219:56:282
2098969991813,3cyclictest2320782-21fschecks_time22:51:182
209896999181,12cyclictest2221366-21apt-get21:11:152
209896999181,12cyclictest2136679-21apt-get19:46:152
2098969991810,6cyclictest2127789-21tr19:36:242
2098963991814,3cyclictest2279091-21kworker/u8:1+flush-8:022:21:180
209896999177,8cyclictest2187277-21sed20:36:232
2098969991713,2cyclictest0-21swapper/220:26:172
2098969991712,3cyclictest2365485-21fschecks_time23:36:182
2098969991712,3cyclictest0-21swapper/221:36:242
2098969991712,3cyclictest0-21swapper/200:31:222
21515032162,9sleep30-21swapper/320:01:153
2098969991613,2cyclictest0-21swapper/221:09:222
2098969991612,2cyclictest0-21swapper/221:45:022
2098969991611,3cyclictest0-21swapper/200:21:242
2098969991610,4cyclictest2221271-21kworker/u8:0+flush-8:021:16:172
23849112152,8sleep30-21swapper/323:56:153
2098969991511,2cyclictest0-21swapper/200:36:192
21969492145,6sleep30-21swapper/320:46:223
24201872132,6sleep30-21swapper/300:30:023
24040912132,7sleep30-21swapper/300:11:283
23803512132,7sleep30-21swapper/323:51:223
23772112134,7sleep30-21swapper/323:46:243
23709762132,7sleep30-21swapper/323:41:223
22954022132,6sleep30-21swapper/322:25:023
22911922133,6sleep30-21swapper/322:21:203
21107522132,6sleep30-21swapper/319:20:023
24252502122,6sleep30-21swapper/300:36:163
24156452122,6sleep30-21swapper/300:26:213
23504452122,6sleep30-21swapper/323:21:203
23402112122,6sleep30-21swapper/323:11:173
23388662122,6sleep30-21swapper/323:06:273
23388662122,6sleep30-21swapper/323:06:273
23240002123,6sleep30-21swapper/322:51:263
22707002122,5sleep30-21swapper/322:00:013
22534882122,6sleep30-21swapper/321:41:233
22415232122,6sleep30-21swapper/321:31:203
22123322122,6sleep30-21swapper/321:01:223
22123322122,6sleep30-21swapper/321:01:223
22051802122,6sleep30-21swapper/320:51:313
22051802122,6sleep30-21swapper/320:51:313
21917672122,6sleep30-21swapper/320:41:193
21865232122,6sleep30-21swapper/320:36:183
21801082122,6sleep30-21swapper/320:26:273
21719222122,6sleep30-21swapper/320:21:213
21702812122,6sleep30-21swapper/320:16:323
21655462122,6sleep30-21swapper/320:11:343
21362122122,5sleep30-21swapper/319:45:023
21314252122,6sleep30-21swapper/319:41:163
21309902123,5sleep30-21swapper/319:39:323
21080922122,6sleep30-21swapper/319:16:233
24105572112,5sleep30-21swapper/300:21:193
24049042112,5sleep30-21swapper/300:15:013
23953852112,5sleep30-21swapper/300:06:183
23901632112,5sleep30-21swapper/300:01:163
23656122112,5sleep30-21swapper/323:36:213
23605082112,5sleep30-21swapper/323:31:193
23551702112,5sleep30-21swapper/323:26:173
23451132112,5sleep30-21swapper/323:16:143
23299932112,4sleep30-21swapper/323:00:013
23253472112,6sleep30-21swapper/322:56:163
23104702112,5sleep30-21swapper/322:40:023
23089622112,5sleep30-21swapper/322:36:253
23006352112,5sleep30-21swapper/322:31:163
22857332112,5sleep30-21swapper/322:15:023
22808672112,5sleep30-21swapper/322:11:133
22762162112,6sleep30-21swapper/322:06:193
22661312112,5sleep30-21swapper/321:56:163
22361172112,6sleep30-21swapper/321:25:183
22263272112,5sleep30-21swapper/321:16:153
22216112112,5sleep30-21swapper/321:11:183
22163852112,5sleep30-21swapper/321:06:163
22062022112,6sleep30-21swapper/320:55:333
21568582112,5sleep30-21swapper/320:06:213
21466532112,5sleep30-21swapper/319:56:173
21245892112,5sleep30-21swapper/319:31:253
21165252112,5sleep30-21swapper/319:26:203
20995582112,5sleep30-21swapper/319:11:193
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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