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2026-05-30 - 09:57

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, 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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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
Compare latency of primary with shadow system
Characteristics of all highest latencies:
System rackeslot4s.osadl.org (updated Sat May 30, 2026 00:44:05)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
999713994741,4cyclictest999636-21latency_hist19:10:001
999709994640,4cyclictest1030637-21latency_hist19:40:000
999720994436,6cyclictest335557-21systemd-journal20:05:013
999709994441,2cyclictest1072580-21kworker/u8:3+flush-259:020:55:010
999709994441,2cyclictest1056465-21kworker/u8:2+events_unbound20:05:170
999709994135,4cyclictest1202918-21latency_hist22:25:010
999720994035,3cyclictest1129756-21kworker/u8:5+flush-259:021:25:183
999717994034,4cyclictest1181793-21latency_hist22:05:012
999709993932,5cyclictest1130158-21diskstats21:15:130
999709993833,4cyclictest998831-21kworker/u8:4+flush-259:021:30:160
999709993733,3cyclictest1192291-21kworker/u8:0+flush-259:022:25:230
999720993531,3cyclictest1338108-21kworker/u8:5+events_unbound00:35:173
999717993531,3cyclictest1072580-21kworker/u8:3+flush-259:020:25:162
999713993531,3cyclictest1161464-21apt-get21:45:121
999713993430,3cyclictest335557-21systemd-journal23:00:001
999720993329,3cyclictest998831-21kworker/u8:4+flush-259:021:30:133
999709993330,2cyclictest998831-21kworker/u8:4+flush-259:019:55:170
999713993229,2cyclictest1145475-21kworker/u8:2+flush-259:022:40:161
999709993227,3cyclictest998831-21kworker/u8:4+flush-259:020:00:210
999720993128,2cyclictest1192291-21kworker/u8:0+flush-259:022:42:213
999709993127,3cyclictest1072580-21kworker/u8:3+events_unbound20:45:160
999720993023,5cyclictest1176635-21latency_hist22:00:003
999713993026,3cyclictest1145475-21kworker/u8:2+flush-259:021:40:161
999709993027,2cyclictest1264418-21kworker/u8:3+flush-259:023:30:230
999709993026,3cyclictest998831-21kworker/u8:4+flush-259:020:20:160
999709992926,2cyclictest3123171-21kworker/u8:0+flush-259:019:25:150
999709992925,3cyclictest3123171-21kworker/u8:0+events_unbound19:19:160
999713992822,4cyclictest1170686-21ntpq21:50:211
999709992824,3cyclictest1056465-21kworker/u8:2+events_unbound20:44:170
999709992823,3cyclictest509-21rs:main0
999709992823,3cyclictest1071951-21gpgv20:20:000
999709992822,4cyclictest335557-21systemd-journal00:16:160
999709992822,4cyclictest1280922-21/usr/sbin/munin23:40:140
999709992821,5cyclictest1322967-21diskstats00:20:130
999720992723,3cyclictest1056465-21kworker/u8:2+flush-259:020:30:013
999713992723,3cyclictest509-21rs:main1
999713992722,4cyclictest1307250-21apt-get00:05:131
999709992722,3cyclictest1239205-21kworker/u8:2+flush-259:023:05:200
999720992623,2cyclictest998831-21kworker/u8:4+flush-259:021:00:013
999720992622,3cyclictest998831-21kworker/u8:4+flush-259:020:40:003
999720992622,3cyclictest1145475-21kworker/u8:2+flush-259:022:30:153
999709992622,3cyclictest1223742-21kworker/u8:3+events_unbound22:58:170
999709992622,3cyclictest1145475-21kworker/u8:2+flush-259:021:35:190
999709992622,3cyclictest1005100-21kworker/u8:3+events_unbound19:49:160
999709992619,5cyclictest335557-21systemd-journal00:00:000
999720992521,3cyclictest1327729-21kworker/u8:1+events_unbound00:34:583
999720992521,3cyclictest1228904-21kworker/u8:1+events_unbound22:50:233
999720992520,3cyclictest1036031-21/usr/sbin/munin19:45:143
999720992518,5cyclictest1291450-21latency_hist23:50:003
999720992517,6cyclictest335557-21systemd-journal21:10:013
999709992522,3cyclictest1182026-21kworker/u8:3+events_unbound22:11:170
999709992522,2cyclictest1145475-21kworker/u8:2+events_unbound22:45:170
999709992521,3cyclictest1175787-21kworker/u8:1+events_unbound22:04:170
999709992521,3cyclictest1020561-21kworker/u8:1+events_unbound20:11:500
999720992419,4cyclictest335557-21systemd-journal21:24:163
999720992419,4cyclictest1228904-21kworker/u8:1+flush-259:023:15:143
999720992419,3cyclictest1223742-21kworker/u8:3+flush-259:022:55:153
999717992419,3cyclictest335557-21systemd-journal00:31:172
999717992417,5cyclictest1145252-21latency_hist21:30:012
999717992417,4cyclictest1197738-21latency_hist22:20:012
999713992420,3cyclictest1072580-21kworker/u8:3+flush-259:021:05:001
999713992418,4cyclictest335557-21systemd-journal19:50:001
999709992421,2cyclictest1192291-21kworker/u8:0+flush-259:023:25:210
999709992420,3cyclictest1145475-21kworker/u8:2+events_unbound22:30:220
999709992417,5cyclictest1140529-21diskstats21:25:130
999720992318,3cyclictest335557-21systemd-journal22:25:153
999717992318,4cyclictest1071928-21apt-get20:20:002
999713992319,3cyclictest1145506-21apt-get21:30:101
999713992317,4cyclictest1187131-21cat22:10:001
999709992320,2cyclictest1228904-21kworker/u8:1+events_unbound23:15:110
999709992319,3cyclictest1275729-21kworker/u8:2+events_unbound23:45:130
999720992218,3cyclictest998831-21kworker/u8:4+flush-259:020:35:013
999720992218,3cyclictest509-21rs:main3
999720992218,3cyclictest1264418-21kworker/u8:3+flush-259:023:30:213
999720992218,3cyclictest1041219-21apt-get19:50:123
999717992218,3cyclictest1228904-21kworker/u8:1+flush-259:023:50:152
999717992216,4cyclictest335557-21systemd-journal19:22:162
999713992218,3cyclictest1103615-21store20:50:001
999713992218,3cyclictest1005131-21apt-get19:15:101
999713992217,4cyclictest998831-21kworker/u8:4+flush-259:020:20:221
999713992217,4cyclictest1015171-21latency_hist19:25:001
999709992219,2cyclictest998831-21kworker/u8:4+flush-259:019:10:170
999709992219,2cyclictest1182026-21kworker/u8:3+events_unbound22:17:170
999709992218,3cyclictest1327729-21kworker/u8:1+events_unbound00:32:170
999709992218,3cyclictest1072580-21kworker/u8:3+events_unbound20:35:230
999720992118,2cyclictest1077560-21grep20:24:593
999720992117,3cyclictest1228904-21kworker/u8:1+events_unbound23:37:313
999717992115,4cyclictest1104070-21munin-node20:50:112
999717992114,5cyclictest335557-21systemd-journal20:25:002
999713992117,3cyclictest1338107-21kworker/u8:0+flush-259:000:35:251
999713992116,4cyclictest1182026-21kworker/u8:3+flush-259:022:20:001
999709992118,2cyclictest1145475-21kworker/u8:2+flush-259:022:05:190
999709992118,2cyclictest1056465-21kworker/u8:2+events_unbound20:30:010
999709992117,3cyclictest1306311-21grep00:00:240
999709992117,3cyclictest1275729-21kworker/u8:2+flush-259:023:50:230
999709992115,4cyclictest1087852-21latency_hist20:35:000
999720992017,2cyclictest998831-21kworker/u8:4+events_unbound20:45:243
999720992017,2cyclictest1192291-21kworker/u8:0+events_unbound23:25:163
999720992017,2cyclictest1056465-21kworker/u8:2+flush-259:020:15:243
999720992016,3cyclictest1155591-21kworker/u8:1+events_unbound21:45:003
99971399204,8cyclictest1233826-21basename22:55:001
999713992017,2cyclictest1302053-21kworker/u8:4+flush-259:000:15:251
999713992016,3cyclictest3123171-21kworker/u8:0+flush-259:019:25:261
999713992016,3cyclictest1275729-21kworker/u8:2+flush-259:023:45:181
999713992016,3cyclictest1145475-21kworker/u8:2+flush-259:022:50:001
999713992013,4cyclictest1244188-21latency_hist23:05:011
999709992017,2cyclictest1302053-21kworker/u8:4+flush-259:000:10:160
999709992017,2cyclictest1192291-21kworker/u8:0+events_unbound22:35:240
999709992017,2cyclictest1166569-21kworker/u8:4+flush-259:021:50:150
999720991916,2cyclictest1145475-21kworker/u8:2+flush-259:022:40:003
999720991916,2cyclictest1030636-21sh19:40:003
999720991915,3cyclictest1145475-21kworker/u8:2+events_unbound22:45:213
999720991915,3cyclictest1145475-21kworker/u8:2+events_unbound22:05:183
999720991915,3cyclictest1113814-21kworker/u8:2+flush-259:021:15:233
999720991912,5cyclictest1114625-21diskstats21:00:143
99971799193,9cyclictest1202928-21awk22:25:002
999717991916,2cyclictest1322398-21kworker/u8:0+flush-259:000:25:002
999717991915,3cyclictest1302053-21kworker/u8:4+flush-259:000:15:242
999713991915,3cyclictest998831-21kworker/u8:4+flush-259:020:40:261
999713991912,4cyclictest1259897-21apt-get23:20:101
999709991916,2cyclictest1302053-21kworker/u8:4+events_unbound00:29:180
999709991916,2cyclictest1145475-21kworker/u8:2+flush-259:022:40:180
999709991916,2cyclictest1005100-21kworker/u8:3+events_unbound19:40:150
999720991815,2cyclictest1312378-21kworker/u8:3+events_unbound00:20:223
999720991815,2cyclictest1239205-21kworker/u8:2+flush-259:023:00:163
999720991813,4cyclictest335557-21systemd-journal00:14:163
999713991815,2cyclictest301rcuc/100:35:001
999713991815,2cyclictest1080113-21kthreadcore20:25:181
999713991814,3cyclictest1312378-21kworker/u8:3+flush-259:000:20:241
999713991814,3cyclictest1302053-21kworker/u8:4+events_unbound00:10:171
999713991814,3cyclictest1145475-21kworker/u8:2+flush-259:021:35:181
999713991814,3cyclictest1056465-21kworker/u8:2+flush-259:020:07:161
999709991815,2cyclictest1192291-21kworker/u8:0+flush-259:023:10:230
999709991814,3cyclictest1228904-21kworker/u8:1+events_unbound22:50:150
999709991814,3cyclictest1113814-21kworker/u8:2+events_unbound21:00:130
999709991814,2cyclictest211rcuc/000:40:000
999709991813,4cyclictest1113814-21kworker/u8:2+events_unbound21:10:110
999720991714,2cyclictest998831-21kworker/u8:4+flush-259:019:30:243
999720991714,2cyclictest998831-21kworker/u8:4+flush-259:019:10:233
999720991714,2cyclictest3123171-21kworker/u8:0+events_unbound19:15:153
999720991713,3cyclictest1145475-21kworker/u8:2+flush-259:021:45:233
999720991713,3cyclictest1056465-21kworker/u8:2+flush-259:020:45:013
999720991710,4cyclictest1306988-21latency_hist00:05:003
999717991712,4cyclictest335557-21systemd-journal19:10:012
999717991710,6cyclictest0-21swapper/221:10:012
999713991714,2cyclictest1145238-21idleruntime-cro21:30:001
999709991714,2cyclictest998831-21kworker/u8:4+events_unbound21:05:030
999709991714,2cyclictest60350irq/132-enp0s29f1:rx-019:54:330
999709991714,2cyclictest1228904-21kworker/u8:1+flush-259:023:20:160
999709991713,3cyclictest1275729-21kworker/u8:2+events_unbound23:39:160
999709991713,3cyclictest1145475-21kworker/u8:2+events_unbound21:42:090
999720991612,3cyclictest1292727-21kworker/u8:3+flush-259:023:50:213
999720991612,3cyclictest1192291-21kworker/u8:0+events_unbound22:15:233
999720991612,3cyclictest0-21swapper/319:59:593
999720991612,2cyclictest0-21swapper/323:45:013
99972099160,15cyclictest1-21systemd00:10:003
999717991613,2cyclictest1233812-21idleruntime-cro22:55:002
999713991614,1cyclictest1104516-21irqcore20:50:161
999713991613,2cyclictest998831-21kworker/u8:4+flush-259:019:40:241
999713991613,2cyclictest998831-21kworker/u8:4+events_unbound19:35:181
999713991612,3cyclictest1113814-21kworker/u8:2+flush-259:021:10:011
999713991611,4cyclictest1327729-21kworker/u8:1+flush-259:000:25:191
999720991513,1cyclictest1260318-21irqcore23:20:153
999720991511,3cyclictest1166569-21kworker/u8:4+events_unbound21:52:123
999720991511,3cyclictest1103445-21kworker/u8:1+flush-259:021:10:223
999717991513,1cyclictest0-21swapper/221:40:002
999717991513,1cyclictest0-21swapper/200:00:002
999717991512,2cyclictest1228904-21kworker/u8:1+flush-259:000:00:252
999717991512,2cyclictest1186982-21cron22:10:002
999717991512,1cyclictest0-21swapper/220:50:002
999717991510,4cyclictest1228904-21kworker/u8:1+flush-259:023:32:472
999713991512,2cyclictest1137512-21kthreadcore21:20:181
999713991511,3cyclictest1192291-21kworker/u8:0+flush-259:022:20:241
999709991513,2cyclictest60350irq/132-enp0s29f1:rx-021:45:090
999709991513,1cyclictest60350irq/132-enp0s29f1:rx-021:55:220
999709991512,2cyclictest1129756-21kworker/u8:5+flush-259:021:20:160
999709991512,2cyclictest1072580-21kworker/u8:3+events_unbound20:55:120
999720991411,2cyclictest1239205-21kworker/u8:2+events_unbound23:05:163
999720991411,2cyclictest1145475-21kworker/u8:2+events_unbound22:15:003
999720991410,3cyclictest1302053-21kworker/u8:4+flush-259:000:25:273
99971799148,4cyclictest1192524-21latency_hist22:15:002
999717991411,1cyclictest0-21swapper/221:20:202
999713991411,2cyclictest1302053-21kworker/u8:4+flush-259:000:00:171
999713991411,2cyclictest1180929-21ntp_kernel_pll_22:00:211
999713991411,2cyclictest1114195-21idleruntime-cro21:00:011
999713991410,3cyclictest1292727-21kworker/u8:3+flush-259:023:55:001
99970999149,4cyclictest1192291-21kworker/u8:0+flush-259:000:10:000
999709991412,1cyclictest60350irq/132-enp0s29f1:rx-019:34:500
99972099139,2cyclictest0-21swapper/320:10:183
99972099138,4cyclictest1197733-21turbostat22:24:553
999720991311,2cyclictest1005100-21kworker/u8:3+events_unbound19:44:543
999720991310,2cyclictest1019889-21unixbench_singl19:25:233
99971799139,3cyclictest1192291-21kworker/u8:0+flush-259:022:35:172
999717991311,1cyclictest0-21swapper/220:55:172
99971399139,3cyclictest1067243-21fschecks_count20:15:131
99971399139,2cyclictest0-21swapper/123:45:001
99971399137,4cyclictest1187666-21apt-get22:10:111
99971399131,3cyclictest1269903-21awk23:30:001
999713991310,2cyclictest1244512-21cpuspeed_turbos23:05:151
999713991310,2cyclictest1051628-21cpuspeed_turbos20:00:101
999713991310,1cyclictest0-21swapper/122:35:001
99972099129,1cyclictest0-21swapper/300:15:213
99971799129,2cyclictest1302053-21kworker/u8:4+flush-259:000:10:252
99971799129,2cyclictest1248847-21unixbench_multi23:05:272
99971799129,2cyclictest1219064-21irqcore22:40:162
99971799129,2cyclictest1208468-21cpuspeed_turbos22:30:112
99971799129,2cyclictest1020561-21kworker/u8:1+flush-259:019:50:242
99971799129,1cyclictest0-21swapper/200:25:192
99971799128,3cyclictest500-21systemd-logind22:50:002
99971799128,3cyclictest335557-21systemd-journal20:31:512
99971799128,3cyclictest1176172-21unixbench_multi21:55:232
99971799128,3cyclictest1093366-21cpuspeed_turbos20:40:132
99971799128,2cyclictest1056435-21sh20:05:002
99971799128,2cyclictest0-21swapper/223:20:002
999717991210,1cyclictest0-21swapper/223:45:012
99971399129,2cyclictest1218396-21cron22:39:591
99971399129,2cyclictest1205765-21kthreadcore22:25:161
99971399127,4cyclictest1239205-21kworker/u8:2+events_unbound23:15:011
99972099118,2cyclictest3123171-21kworker/u8:0+flush-259:019:20:163
99972099116,3cyclictest1301737-21cron00:00:003
99971799118,2cyclictest1238556-21unixbench_singl22:55:232
99971799118,2cyclictest1145763-21fschecks_time21:30:122
99971799118,2cyclictest0-21swapper/223:00:162
99971799117,3cyclictest1113814-21kworker/u8:2+flush-259:021:00:162
99971799113,2cyclictest1343284-21munin-run00:40:002
99971399119,1cyclictest0-21swapper/121:10:171
99971399118,2cyclictest1280203-21unixbench_multi23:35:241
99971399118,2cyclictest1083381-21irqcore20:30:151
99971399118,2cyclictest0-21swapper/119:30:191
99972099106,3cyclictest1056465-21kworker/u8:2+flush-259:020:05:263
99971799107,2cyclictest1310471-21kthreadcore00:05:192
99971799107,2cyclictest1036122-21cpuspeed_turbos19:45:132
99971799107,2cyclictest0-21swapper/221:45:132
99971399108,1cyclictest1275062-21idleruntime-cro23:35:001
9997179984,1cyclictest0-21swapper/221:50:162
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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