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2026-05-20 - 04:48

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #9, 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.
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
Compare latency of primary with shadow system
Characteristics of the highest latencies:
System rack9slot4s (updated Wed May 20, 2026 00:59:01)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
60139911631153,7cyclictest0-21swapper/019:25:110
60149911381105,29cyclictest13685-21awk19:40:281
60149911301120,7cyclictest0-21swapper/119:25:081
55532624578,31sleep10-21swapper/119:20:451
59312464417,31sleep00-21swapper/019:24:430
60139910373,27cyclictest0-21swapper/019:40:280
203032950,4sleep020305-21missed_timers21:25:200
205362820,9sleep0601399cyclictest00:19:210
164412650,4sleep041ktimersoftd/021:15:210
136912470,3sleep041ktimersoftd/000:00:170
187352450,5sleep1211ktimersoftd/100:15:001
294652430,4sleep0111rcuc/023:15:260
92092351,30sleep12695-21snmpd23:48:571
53052351,5sleep15447-21users22:10:291
236192341,4sleep023651-21df_inode21:35:130
204042341,29sleep120438-21ntp_states21:25:231
601499331,5cyclictest15434-21diskstats00:05:191
150412330,2sleep015044-21wc21:10:290
191922321,5sleep10-21swapper/121:22:191
156462321,10sleep00-21swapper/019:45:590
95992311,5sleep10-21swapper/122:24:111
6014993117,7cyclictest554-21iostat_ios23:25:201
6013993124,5cyclictest0-21swapper/020:18:590
6013993111,7cyclictest24791-21runrttasks00:30:140
4212311,4sleep1457-21ntp_states00:50:251
237352311,5sleep10-21swapper/121:35:171
19542311,3sleep02130-21df23:30:120
6014993020,6cyclictest23046-21fschecks_count00:25:161
601399304,15cyclictest17452-21grep19:50:290
601399302,15cyclictest1188-21/usr/sbin/munin20:35:170
6013993012,6cyclictest31142-21iostat_ios23:20:190
601399301,25cyclictest29178-21/usr/sbin/munin00:40:260
6013993010,7cyclictest12279-21plymouth19:40:000
224942301,5sleep10-21swapper/122:56:291
70412291,5sleep10-21swapper/123:40:561
601499294,8cyclictest29662-21diskstats20:25:151
6013992911,6cyclictest22832-21ls00:25:120
6013992911,5cyclictest603-21df22:00:140
601399291,15cyclictest10201-21/usr/sbin/munin21:00:110
601399291,14cyclictest13431-21cron22:34:590
6013992910,6cyclictest27231-21ntp_states00:35:260
4772291,5sleep00-21swapper/020:34:550
325502291,5sleep10-21swapper/121:59:331
320912291,5sleep10-21swapper/123:23:191
306462291,5sleep00-21swapper/020:25:330
3042291,5sleep10-21swapper/122:00:041
283272291,5sleep00-21swapper/023:13:280
272022291,5sleep10-21swapper/120:18:581
263372291,5sleep10-21swapper/123:07:131
246172291,5sleep10-21swapper/123:03:531
229652291,5sleep10-21swapper/121:32:341
193912291,5sleep10-21swapper/119:55:551
193622291,5sleep00-21swapper/021:24:060
182932291,5sleep00-21swapper/000:10:360
178302291,5sleep10-21swapper/119:54:111
149092291,8sleep00-21swapper/022:35:530
137092291,4sleep00-21swapper/021:09:090
9912281,5sleep00-21swapper/000:51:210
80172281,5sleep10-21swapper/120:53:461
601499289,15cyclictest282052chrt23:12:081
601499284,18cyclictest17669-21diskstats22:45:141
601499283,19cyclictest12375-21diskstats21:05:141
601499282,23cyclictest0-21swapper/121:46:401
6014992820,5cyclictest9613-21find19:30:251
6014992813,12cyclictest10425-21sendmail_mailqu23:50:261
601499281,23cyclictest27840-21tune2fs20:20:151
601399284,18cyclictest3133-21ntp_states22:05:270
601399283,4cyclictest81rcu_preempt20:22:170
601399282,12cyclictest8471-21/usr/sbin/munin22:20:180
6013992811,5cyclictest21382-21irqstats00:20:220
6013992811,5cyclictest12615-21users23:55:270
601399281,14cyclictest7023-21/usr/sbin/munin22:15:280
6013992811,4cyclictest11565-21gdbus20:13:160
601399281,13cyclictest5199-21python22:10:260
6013992810,5cyclictest21557-21grep22:55:150
53992281,5sleep00-21swapper/023:38:340
32342281,5sleep10-21swapper/123:30:421
318492281,5sleep10-21swapper/100:49:111
297132281,5sleep10-21swapper/100:41:571
278962281,5sleep10-21swapper/100:37:461
253892281,5sleep10-21swapper/120:14:371
232572281,5sleep10-21swapper/120:06:561
220952281,5sleep10-21swapper/100:20:551
206862281,4sleep10-21swapper/122:52:091
205792281,5sleep10-21swapper/100:19:521
168722281,5sleep10-21swapper/122:41:311
119102281,5sleep10-21swapper/119:36:231
111632281,5sleep00-21swapper/022:26:000
110002281,5sleep00-21swapper/023:53:030
103312281,5sleep00-21swapper/019:34:310
98372271,5sleep10-21swapper/122:25:061
601499273,18cyclictest25558-21diskstats21:40:151
6014992717,6cyclictest5026-21unixbench_multi23:35:281
6014992716,6cyclictest8831-21ls20:55:181
601399271,22cyclictest5142-21iostat_ios20:45:200
601399271,14cyclictest11565-21gdbus20:42:490
601399271,13cyclictest18187-21ntpdc22:45:230
6013992711,14cyclictest0-21swapper/020:03:460
6013992711,13cyclictest0-21swapper/000:05:400
601399271,10cyclictest10032-21munin-plugin-st21:00:010
37872271,5sleep10-21swapper/122:07:341
306652271,5sleep00-21swapper/021:54:270
303722271,5sleep10-21swapper/121:51:231
3012271,5sleep10-21swapper/120:33:051
265772271,5sleep00-21swapper/023:09:450
172972271,5sleep10-21swapper/121:17:201
133682271,5sleep10-21swapper/122:34:221
124032271,22sleep112559-21sed23:55:271
601499263,8cyclictest14258-21diskstats21:10:161
6014992613,8cyclictest2225-21dbus-daemon20:04:391
601499261,21cyclictest14068-21fschecks_time22:35:161
601399269,14cyclictest7956-21grep23:45:160
601399266,17cyclictest30693-21cut00:45:180
601399261,21cyclictest23630-21cut23:00:200
601399261,14cyclictest0-21swapper/023:44:530
601399261,13cyclictest11565-21gdbus21:33:210
268382261,5sleep00-21swapper/021:43:390
114872261,5sleep10-21swapper/121:00:381
6014992517,5cyclictest22-21ksoftirqd/100:34:361
6014992517,4cyclictest22-21ksoftirqd/122:15:261
6014992516,6cyclictest852-21cpuspeed_turbos20:35:111
6014992516,5cyclictest22-21ksoftirqd/119:47:441
601399252,11cyclictest0-21swapper/022:40:120
601399251,19cyclictest11565-21gdbus20:05:100
601399251,13cyclictest0-21swapper/019:56:350
6013992510,4cyclictest643-21memory23:25:220
601499247,6cyclictest0-21swapper/120:46:281
6014992412,8cyclictest3286-21runrttasks00:01:461
6014992412,7cyclictest300552chrt23:16:551
601399248,4cyclictest7030-21irqstats20:50:200
6013992416,5cyclictest31485-21irqstats21:55:200
601399241,19cyclictest28858-21turbostat.cron21:49:590
601399241,15cyclictest0-21swapper/022:52:330
601499231,16cyclictest3055-21/usr/sbin/munin20:40:151
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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