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2026-04-29 - 01:17

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #e, slot #6

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 the 792 highest latencies:
System rackeslot6s.osadl.org (updated Tue Apr 28, 2026 12:44:53)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
1255910999458,15cyclictest311ktimers/208:45:002
1255906998039,35cyclictest1256803-21latency_hist07:15:010
1255906997635,36cyclictest1268158-21munin-run08:20:000
1255906997635,36cyclictest1268158-21munin-run08:19:590
125590699743,8cyclictest1281668-21grep09:35:280
125590699743,8cyclictest1281668-21grep09:35:270
1255906997337,32cyclictest20650irq/252-8000000.ethernet08:35:240
1255906997236,28cyclictest20650irq/252-8000000.ethernet11:40:250
1255906997236,28cyclictest20650irq/252-8000000.ethernet11:40:250
1255906997129,37cyclictest0-21swapper/008:00:010
1255906997039,27cyclictest20650irq/252-8000000.ethernet09:50:180
1255906997034,30cyclictest1296077-21phc2sys11:00:250
1255906997034,30cyclictest1296077-21phc2sys11:00:250
1255906996944,20cyclictest20650irq/252-8000000.ethernet10:15:280
1255906996944,20cyclictest20650irq/252-8000000.ethernet10:15:280
1255906996938,26cyclictest1258586-21grep07:20:280
1255906996838,26cyclictest20650irq/252-8000000.ethernet08:40:270
1255906996837,27cyclictest20650irq/252-8000000.ethernet12:25:230
1255906996837,27cyclictest20650irq/252-8000000.ethernet12:25:230
1255906996836,27cyclictest1278060-21phc2sys09:15:260
1255906996828,36cyclictest1274137-21sshd08:52:490
1255909996761,4cyclictest231ktimers/108:55:001
1255906996735,27cyclictest20650irq/252-8000000.ethernet11:15:190
1255906996728,33cyclictest1289902-21/usr/sbin/munin10:25:220
125590699672,5cyclictest1269560-21irqstats08:25:230
1255906996636,24cyclictest1259552-21apt-config07:30:000
1255906996636,24cyclictest1259552-21apt-config07:30:000
1255906996624,38cyclictest0-21swapper/009:20:270
1255906996540,20cyclictest1275800-21grep09:00:270
1255906996537,24cyclictest20650irq/252-8000000.ethernet08:45:280
1255906996527,34cyclictest0-21swapper/008:05:290
1255906996527,34cyclictest0-21swapper/008:05:290
1255906996439,20cyclictest1297957-21grep11:10:280
1255906996436,24cyclictest20650irq/252-8000000.ethernet08:00:240
125590699641,57cyclictest1660-21snmpd10:35:090
1255906996336,22cyclictest20650irq/252-8000000.ethernet10:05:290
1255906996335,25cyclictest20650irq/252-8000000.ethernet09:45:250
1255906996334,26cyclictest20650irq/252-8000000.ethernet12:30:190
1255906996334,25cyclictest1302375-21sed11:40:010
125590699633,14cyclictest20850irq/208-8000000.ethernet10:20:090
1255906996316,37cyclictest0-21swapper/010:55:010
1255906996236,22cyclictest20650irq/252-8000000.ethernet11:25:160
125590699621,4cyclictest0-21swapper/007:40:110
1255906996137,21cyclictest20650irq/252-8000000.ethernet10:50:010
1255906996134,22cyclictest1309313-21latency_hist12:20:020
1255906996133,24cyclictest1262556-21sh07:45:190
1255906996131,26cyclictest1276612-21sed09:05:290
1255906996128,29cyclictest1253478-21kworker/u8:1+ext4-rsv-conversion07:30:060
1255910996050,5cyclictest1268162-21sendmail08:20:002
1255910996050,5cyclictest1268162-21sendmail08:20:002
1255909996038,15cyclictest231ktimers/108:20:131
1255906996037,20cyclictest20650irq/252-8000000.ethernet12:20:230
1255906996037,20cyclictest20650irq/252-8000000.ethernet09:00:000
1255906996037,20cyclictest20650irq/252-8000000.ethernet09:00:000
1255906996037,19cyclictest20650irq/252-8000000.ethernet10:10:240
1255906996035,21cyclictest20650irq/252-8000000.ethernet12:00:180
1255906996018,31cyclictest0-21swapper/007:40:000
1255906995950,5cyclictest0-21swapper/010:55:160
1255906995934,20cyclictest167350irq/118-8000000.ethernet-tx010:30:180
1255906995934,20cyclictest167350irq/118-8000000.ethernet-tx010:30:180
1255906995933,23cyclictest20650irq/252-8000000.ethernet11:50:170
125590699592,6cyclictest1306980-21irqstats12:05:230
125590699592,3cyclictest1277661-21ls09:15:010
125590699592,3cyclictest1277661-21ls09:15:010
125590699592,13cyclictest1257980-21cat07:20:010
1255906995846,6cyclictest167350irq/118-8000000.ethernet-tx012:10:250
1255906995844,9cyclictest1292877-21grep10:40:280
1255906995836,18cyclictest20650irq/252-8000000.ethernet11:35:010
1255909995737,14cyclictest231ktimers/109:05:141
1255906995734,19cyclictest1303718-21uname11:45:260
1255906995731,23cyclictest20650irq/252-8000000.ethernet07:50:190
1255906995729,23cyclictest1285876-21grep10:00:290
1255906995623,30cyclictest131ktimers/008:30:120
125590699551,51cyclictest0-21swapper/011:20:160
1255910995445,5cyclictest1285121-21cron10:00:002
125590699543,9cyclictest1282504-21unixbench_multi09:40:300
125590699543,10cyclictest1305598-21grep11:55:300
125590699542,9cyclictest1285082-21grep09:55:270
1255906995427,24cyclictest0-21swapper/011:05:230
125590699542,14cyclictest1312023-21grep12:35:210
125590699541,47cyclictest0-21swapper/007:10:010
1255909995313,31cyclictest231ktimers/109:50:011
1255906995332,17cyclictest20650irq/252-8000000.ethernet08:10:230
1255906995321,20cyclictest1270438-1kworker/0:2H+mmc_complete09:30:020
125590699519,38cyclictest0-21swapper/008:25:000
1255910995038,8cyclictest1289480-21apt-key10:25:002
1255909995028,15cyclictest231ktimers/111:00:141
1255909995028,15cyclictest231ktimers/111:00:141
1255906995015,5cyclictest0-21swapper/009:30:190
1255910994835,9cyclictest1312512-21sendmail12:40:002
1255910994737,5cyclictest0-21swapper/212:15:012
1255910994728,13cyclictest311ktimers/212:15:102
1255910994726,15cyclictest311ktimers/209:30:142
125590999462,14cyclictest1289363-21apt-get10:25:011
1255910994533,7cyclictest0-21swapper/211:30:002
125590999456,4cyclictest1259535-21apt-get07:30:021
125590999456,4cyclictest1259535-21apt-get07:30:011
125590999451,12cyclictest0-21swapper/111:35:201
125591099449,5cyclictest12559031cyclictest07:10:012
1255909994429,9cyclictest0-21swapper/110:15:261
1255909994429,9cyclictest0-21swapper/110:15:261
1255909994428,11cyclictest231ktimers/111:30:151
1255910994335,4cyclictest1276589-21grep09:05:292
1255910994333,6cyclictest1275743-21grep09:00:282
1255910994324,15cyclictest311ktimers/212:00:132
125590999437,15cyclictest231ktimers/110:10:011
1255909994333,6cyclictest0-21swapper/107:40:001
1255910994228,10cyclictest311ktimers/212:05:152
1255910994223,13cyclictest311ktimers/211:10:112
1255909994228,9cyclictest231ktimers/108:45:121
1255909994134,4cyclictest1264780-21munin-plugin-st08:00:011
1255910994033,4cyclictest1303983-21munin-plugin-st11:50:002
1255910994026,10cyclictest0-21swapper/210:30:282
1255910994026,10cyclictest0-21swapper/210:30:282
1255909994026,9cyclictest0-21swapper/111:55:291
1255909994023,9cyclictest0-21swapper/110:50:261
125590999401,8cyclictest0-21swapper/107:50:011
125591099396,3cyclictest0-21swapper/208:30:012
1255910993930,5cyclictest0-21swapper/209:35:282
1255910993930,5cyclictest0-21swapper/209:35:282
1255910993920,14cyclictest311ktimers/210:35:162
1255909993929,5cyclictest0-21swapper/107:20:281
1255910993825,9cyclictest0-21swapper/212:20:212
1255910993824,9cyclictest0-21swapper/207:50:312
1255910993822,8cyclictest0-21swapper/207:10:312
1255909993834,2cyclictest0-21swapper/110:00:011
1255909993831,4cyclictest0-21swapper/111:40:171
1255909993831,4cyclictest0-21swapper/111:40:171
1255909993829,6cyclictest1256713-21munin-plugin-st07:15:011
1255909993825,5cyclictest0-21swapper/110:00:291
1255909993821,12cyclictest231ktimers/111:25:111
125590999381,3cyclictest0-21swapper/112:25:011
1255910993728,5cyclictest14-21rcu_preempt08:05:202
1255910993728,5cyclictest14-21rcu_preempt08:05:192
125591099371,30cyclictest1257193-21/usr/sbin/munin07:15:182
1255909993727,6cyclictest1281669-21grep09:35:281
1255909993727,6cyclictest1281669-21grep09:35:281
1255909993724,8cyclictest0-21swapper/111:10:201
1255909993723,9cyclictest1291015-21grep10:30:281
1255909993723,9cyclictest1291015-21grep10:30:281
1255909993721,11cyclictest0-21swapper/109:35:001
1255909993720,12cyclictest231ktimers/109:25:131
125590999371,5cyclictest0-21swapper/108:15:001
125590999371,4cyclictest0-21swapper/111:00:011
1255910993629,4cyclictest1293698-21grep10:45:302
1255910993618,13cyclictest311ktimers/207:20:132
1255909993628,4cyclictest0-21swapper/108:05:001
1255909993623,9cyclictest0-21swapper/112:25:201
1255909993623,9cyclictest0-21swapper/112:25:201
1255909993621,11cyclictest0-21swapper/108:55:301
1255909993621,11cyclictest0-21swapper/108:55:301
1255909993619,13cyclictest231ktimers/108:35:131
125590999361,29cyclictest0-21swapper/107:40:031
1255910993527,4cyclictest0-21swapper/209:20:282
1255909993523,8cyclictest0-21swapper/111:50:271
1255909993523,8cyclictest0-21swapper/111:20:201
125590999351,27cyclictest1306719-21/usr/sbin/munin12:05:231
1255909993512,5cyclictest832-21systemd-network08:29:411
125591099345,4cyclictest0-21swapper/210:10:022
1255910993427,3cyclictest1310832-21munin-plugin-st12:30:002
1255910993427,3cyclictest1310832-21munin-plugin-st12:30:002
1255910993425,5cyclictest1260423-21grep07:30:302
1255910993423,7cyclictest0-21swapper/208:45:292
1255910993423,6cyclictest0-21swapper/209:10:262
1255910993423,6cyclictest0-21swapper/209:10:262
1255910993422,8cyclictest0-21swapper/212:30:292
1255910993420,10cyclictest311ktimers/211:15:142
1255910993419,8cyclictest30-21rcuc/211:05:132
1255909993423,5cyclictest0-21swapper/108:30:281
125590999341,4cyclictest0-21swapper/112:40:011
1255910993326,4cyclictest0-21swapper/208:30:282
1255910993323,7cyclictest0-21swapper/209:15:202
1255910993323,6cyclictest0-21swapper/211:35:302
1255910993320,9cyclictest0-21swapper/210:50:282
1255910993319,10cyclictest311ktimers/211:55:132
1255910993318,10cyclictest311ktimers/207:25:152
1255910993318,10cyclictest311ktimers/207:25:142
125591099331,30cyclictest1287863-21/usr/sbin/munin10:15:272
125591099331,30cyclictest1287863-21/usr/sbin/munin10:15:272
125591099331,26cyclictest0-21swapper/208:10:162
1255909993326,4cyclictest51-21kcompactd007:20:011
1255909993326,4cyclictest0-21swapper/111:05:291
1255909993324,6cyclictest1292282-21/usr/sbin/munin10:40:201
1255909993323,6cyclictest0-21swapper/109:20:281
1255910993226,3cyclictest0-21swapper/208:00:282
1255910993221,8cyclictest1263026-21unixbench_singl07:45:282
1255910993221,7cyclictest0-21swapper/207:40:012
125591099321,3cyclictest30-21rcuc/211:20:262
1255909993224,6cyclictest1289653-21/usr/sbin/munin10:25:241
1255909993223,7cyclictest1282807-21/usr/sbin/munin09:45:151
1255909993223,6cyclictest1271837-21/usr/sbin/munin08:40:261
1255909993223,4cyclictest0-21swapper/112:30:271
1255909993222,8cyclictest1293764-21munin-plugin-st10:50:001
1255909993216,11cyclictest231ktimers/109:15:151
125590999321,26cyclictest0-21swapper/111:15:291
125591099318,16cyclictest311ktimers/210:40:112
1255910993123,6cyclictest1268460-21/usr/sbin/munin08:20:282
1255910993120,7cyclictest0-21swapper/209:40:302
1255909993123,5cyclictest0-21swapper/112:20:011
125590999311,5cyclictest1266197-21ps08:05:271
125590999311,5cyclictest1266197-21ps08:05:271
1255909993112,4cyclictest8321systemd-network12:14:251
1255910993023,4cyclictest0-21swapper/210:25:272
1255910993023,4cyclictest0-21swapper/210:10:292
1255910993021,5cyclictest0-21swapper/210:55:202
1255910993019,8cyclictest30-21rcuc/211:00:132
1255910993019,8cyclictest30-21rcuc/211:00:132
1255910993019,8cyclictest1304821-21apt11:55:002
1255909993021,6cyclictest0-21swapper/109:40:281
125590999301,24cyclictest0-21swapper/108:15:111
125590999301,24cyclictest0-21swapper/108:15:111
125591099299,4cyclictest832-21systemd-network09:48:272
1255910992920,4cyclictest0-21swapper/208:35:252
1255910992915,10cyclictest0-21swapper/209:30:012
1255909992919,7cyclictest0-21swapper/109:10:191
1255909992919,7cyclictest0-21swapper/109:10:191
1255910992822,4cyclictest0-21swapper/211:40:172
1255910992822,4cyclictest0-21swapper/211:40:172
1255910992817,8cyclictest311ktimers/207:40:142
1255910992816,8cyclictest0-21swapper/209:50:302
1255910992816,7cyclictest0-21swapper/209:00:012
1255910992816,7cyclictest0-21swapper/209:00:012
1255909992819,6cyclictest0-21swapper/111:45:271
125590999281,25cyclictest0-21swapper/109:01:471
1255910992721,3cyclictest0-21swapper/208:50:282
1255910992719,5cyclictest14-21rcu_preempt10:00:262
125591099271,25cyclictest0-21swapper/211:30:232
125590999279,4cyclictest8321systemd-network12:04:311
1255909992720,4cyclictest0-21swapper/107:45:261
1255909992719,5cyclictest0-21swapper/110:10:171
1255909992616,7cyclictest231ktimers/110:35:051
1255909992515,5cyclictest231ktimers/107:30:041
1255910992217,3cyclictest1264133-21/usr/sbin/munin07:55:282
1255909992015,3cyclictest1255867-21latency_hist07:10:011
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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