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2026-05-28 - 23:42

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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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 100 highest latencies:
System rackeslot6s.osadl.org (updated Thu May 28, 2026 12:44:47)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
25870119912111,9cyclictest0-21swapper/109:05:001
258701199931,2cyclictest0-21swapper/108:40:011
2587011997431,34cyclictest0-21swapper/111:15:291
2587011997431,34cyclictest0-21swapper/111:15:281
258701199691,6cyclictest0-21swapper/112:35:001
2587011996524,31cyclictest0-21swapper/109:05:281
2587011996521,5cyclictest2636300-21grep11:55:261
2587011996430,26cyclictest0-21swapper/109:10:281
2587011996422,33cyclictest0-21swapper/109:40:251
2587011996324,29cyclictest0-21swapper/109:25:191
2587011996220,32cyclictest0-21swapper/111:45:231
2587011996129,26cyclictest0-21swapper/110:30:261
2587011996021,3cyclictest0-21swapper/110:10:221
2587011996016,38cyclictest0-21swapper/109:55:251
2587011995817,35cyclictest0-21swapper/108:10:011
2587011995722,29cyclictest0-21swapper/110:15:271
2587011995720,3cyclictest0-21swapper/107:45:221
2587011995716,6cyclictest0-21swapper/108:45:301
2587011995625,24cyclictest0-21swapper/107:15:011
2587011995616,6cyclictest0-21swapper/110:50:251
2587011995525,22cyclictest0-21swapper/112:00:291
2587011995521,29cyclictest0-21swapper/109:30:251
2587011995518,6cyclictest2616891-21cron10:05:001
2587011995516,8cyclictest2639683-21grep12:15:281
2587011995423,25cyclictest2596550-21grep08:05:001
2587011995417,33cyclictest0-21swapper/112:10:261
2587011995417,33cyclictest0-21swapper/112:10:261
2587011995416,6cyclictest0-21swapper/110:20:211
2587011995415,5cyclictest0-21swapper/108:50:271
2587011995316,4cyclictest0-21swapper/111:40:241
2587011995315,3cyclictest0-21swapper/111:20:221
2587009995333,13cyclictest0-21swapper/007:55:290
2587011995224,24cyclictest231ktimers/111:35:211
2587011995223,26cyclictest0-21swapper/111:05:211
2587011995218,4cyclictest0-21swapper/107:20:291
2587011995218,4cyclictest0-21swapper/107:20:291
2587011995216,6cyclictest0-21swapper/108:15:271
2587011995216,6cyclictest0-21swapper/108:15:271
258701199521,28cyclictest2592775-21/usr/sbin/munin07:40:231
2587011995123,11cyclictest2597587-21/usr/sbin/munin08:10:171
2587011995120,26cyclictest0-21swapper/109:20:021
2587011995116,4cyclictest0-21swapper/107:30:251
2587009995118,28cyclictest0-21swapper/011:20:200
2587011995035,10cyclictest0-21swapper/109:40:011
2587011995030,16cyclictest2605816-21sh09:00:001
2587011995030,16cyclictest2605816-21sh09:00:001
2587011995019,4cyclictest0-21swapper/110:05:281
2587009995040,6cyclictest2622807-21sendmail10:40:000
2587011994940,6cyclictest2595694-21munin-plugin-st07:59:591
2587011994919,25cyclictest0-21swapper/108:25:011
2587011994918,8cyclictest0-21swapper/111:54:591
2587011994822,23cyclictest2640617-21sshd12:21:211
258701199481,25cyclictest0-21swapper/110:29:311
2587009994828,14cyclictest0-21swapper/011:05:280
258701499479,25cyclictest2634077-21/usr/sbin/munin11:45:172
2587014994732,11cyclictest0-21swapper/211:35:002
2587011994719,4cyclictest0-21swapper/107:40:001
2587009994736,7cyclictest2606924-21cat09:05:010
2587009994734,2cyclictest0-21swapper/009:20:020
2587011994626,16cyclictest0-21swapper/107:25:251
2587011994619,22cyclictest0-21swapper/110:40:181
2587011994614,8cyclictest0-21swapper/111:25:231
2587009994633,10cyclictest2614320-21grep09:45:290
2587011994536,6cyclictest2610045-21grep09:20:301
258700999452,40cyclictest0-21swapper/009:10:240
258700999451,37cyclictest0-21swapper/007:15:040
258700999449,31cyclictest0-21swapper/010:10:190
2587009994436,5cyclictest2637223-21grep12:00:280
2587009994433,7cyclictest0-21swapper/008:50:290
2587009994426,16cyclictest0-21swapper/009:30:240
258700999442,40cyclictest0-21swapper/009:40:180
258701499434,5cyclictest0-21swapper/208:25:022
2587014994335,5cyclictest2626117-21unixbench_singl10:55:292
2587014994330,8cyclictest0-21swapper/208:05:272
2587011994320,18cyclictest0-21swapper/109:50:291
2587009994338,4cyclictest0-21swapper/007:35:090
2587009994331,9cyclictest0-21swapper/010:10:010
2587009994315,23cyclictest0-21swapper/007:15:020
2587009994311,8cyclictest2587005-21cyclictest07:20:220
2587009994311,8cyclictest2587005-21cyclictest07:20:210
2587014994231,7cyclictest0-21swapper/210:25:262
2587014994230,8cyclictest0-21swapper/212:30:262
2587014994227,9cyclictest0-21swapper/207:15:012
2587014994216,12cyclictest2618776-21/usr/sbin/munin10:15:182
258701199421,7cyclictest0-21swapper/112:30:011
2587009994236,2cyclictest2624024-21fschecks_time10:45:190
2587009994228,10cyclictest0-21swapper/011:00:280
2587009994228,10cyclictest0-21swapper/011:00:280
258700999422,4cyclictest2601864-21df08:35:180
2587009994224,16cyclictest0-21swapper/011:30:170
258700999421,5cyclictest2600421-21grep08:25:230
258701499418,21cyclictest2592537-21/usr/sbin/munin07:40:192
2587014994134,4cyclictest2614351-21cron09:50:002
2587011994121,18cyclictest231ktimers/108:25:121
2587009994129,9cyclictest0-21swapper/010:40:270
2587009994128,9cyclictest0-21swapper/008:20:290
2587009994127,10cyclictest0-21swapper/011:40:260
258700999412,4cyclictest2591143-21memory07:30:240
2587009994124,14cyclictest131ktimers/012:05:130
258700999412,37cyclictest0-21swapper/008:30:170
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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