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2026-04-06 - 16:14

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #8, 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 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 100 highest latencies:
System rack8slot6s.osadl.org (updated Mon Apr 06, 2026 12:43:43)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
26945993232,0cyclictest14733-21fwupd09:15:280
26957991818,0cyclictest28354-21cat09:50:142
26951991818,0cyclictest743-21snmpd12:30:391
26951991818,0cyclictest743-21snmpd10:23:121
26951991818,0cyclictest65850irq/126-lan11:54:191
26951991818,0cyclictest65850irq/126-lan11:22:051
26951991818,0cyclictest65850irq/126-lan09:05:191
26951991818,0cyclictest65850irq/126-lan09:05:191
26951991818,0cyclictest65850irq/126-lan08:17:091
26951991817,1cyclictest65850irq/126-lan12:10:131
26957991717,0cyclictest743-21snmpd11:31:312
26957991717,0cyclictest23564-21cat08:20:132
26951991717,0cyclictest743-21snmpd09:55:311
26951991717,0cyclictest743-21snmpd09:11:051
26951991717,0cyclictest743-21snmpd09:11:051
26951991717,0cyclictest743-21snmpd08:35:581
26951991717,0cyclictest743-21snmpd07:21:081
26951991717,0cyclictest743-21snmpd07:14:531
26951991717,0cyclictest65850irq/126-lan12:37:141
26951991717,0cyclictest65850irq/126-lan12:00:201
26951991717,0cyclictest65850irq/126-lan11:15:291
26951991717,0cyclictest65850irq/126-lan08:20:121
26951991717,0cyclictest24326-21cat09:40:111
26951991716,1cyclictest65850irq/126-lan12:15:121
26951991616,0cyclictest743-21snmpd11:31:341
26951991616,0cyclictest743-21snmpd11:13:251
26951991616,0cyclictest743-21snmpd09:02:231
26951991616,0cyclictest65850irq/126-lan11:55:181
26951991616,0cyclictest65850irq/126-lan11:40:131
26951991616,0cyclictest65850irq/126-lan10:53:551
26951991616,0cyclictest65850irq/126-lan10:16:591
26951991616,0cyclictest65850irq/126-lan10:10:121
26951991616,0cyclictest65850irq/126-lan09:53:261
26951991616,0cyclictest65850irq/126-lan09:47:051
26951991616,0cyclictest65850irq/126-lan09:34:481
26951991616,0cyclictest65850irq/126-lan09:15:261
26951991616,0cyclictest65850irq/126-lan08:30:161
26951991616,0cyclictest65850irq/126-lan07:50:171
26951991616,0cyclictest65850irq/126-lan07:43:591
26951991615,1cyclictest65850irq/126-lan11:45:131
26951991615,1cyclictest65850irq/126-lan11:35:211
26951991615,1cyclictest65850irq/126-lan11:25:141
26951991615,1cyclictest65850irq/126-lan08:45:181
26951991615,1cyclictest65850irq/126-lan07:45:141
26951991515,0cyclictest65850irq/126-lan12:26:061
26951991515,0cyclictest65850irq/126-lan12:20:171
26951991515,0cyclictest65850irq/126-lan10:35:231
26951991515,0cyclictest65850irq/126-lan10:34:351
26951991515,0cyclictest65850irq/126-lan10:00:161
26951991515,0cyclictest65850irq/126-lan08:40:121
26951991515,0cyclictest65850irq/126-lan08:25:201
26951991515,0cyclictest65850irq/126-lan07:35:181
26951991514,1cyclictest65850irq/126-lan10:47:311
26951991514,1cyclictest65850irq/126-lan10:05:181
26951991514,1cyclictest65850irq/126-lan08:03:291
26951991414,0cyclictest743-21snmpd07:56:181
26951991414,0cyclictest65850irq/126-lan12:05:201
26951991414,0cyclictest65850irq/126-lan11:05:131
26951991414,0cyclictest65850irq/126-lan11:04:551
26951991414,0cyclictest65850irq/126-lan10:25:091
26951991414,0cyclictest65850irq/126-lan07:30:161
26951991414,0cyclictest65850irq/126-lan07:25:151
26951991414,0cyclictest65850irq/126-lan07:15:121
26951991413,1cyclictest65850irq/126-lan08:05:161
26951991313,0cyclictest65850irq/126-lan09:35:161
26951991313,0cyclictest65850irq/126-lan09:28:501
26951991313,0cyclictest65850irq/126-lan08:55:221
26951991312,1cyclictest65850irq/126-lan08:50:171
26951991212,0cyclictest65850irq/126-lan10:59:411
26951991111,0cyclictest65850irq/126-lan10:44:351
269599998,1cyclictest741-21lldpd10:48:483
269459998,1cyclictest743-21snmpd08:21:490
269459998,1cyclictest741-21lldpd08:10:440
269599988,0cyclictest743-21snmpd08:21:523
269599988,0cyclictest743-21snmpd07:57:333
269599988,0cyclictest741-21lldpd12:35:223
269599988,0cyclictest741-21lldpd09:50:173
269599988,0cyclictest741-21lldpd08:44:163
269599987,1cyclictest743-21snmpd11:13:213
269599987,1cyclictest743-21snmpd10:44:323
269599987,1cyclictest743-21snmpd09:22:333
269599987,1cyclictest23843-21sendmail12:19:593
269599986,2cyclictest743-21snmpd11:54:533
269599986,2cyclictest743-21snmpd11:05:463
269599986,2cyclictest743-21snmpd08:28:193
269599986,2cyclictest743-21snmpd08:12:583
269599986,2cyclictest717-21ntpd11:40:103
269599986,2cyclictest717-21ntpd08:45:013
269599986,2cyclictest21473-21cat08:15:143
269599983,5cyclictest557-21NetworkManager10:00:323
269579988,0cyclictest743-21snmpd11:57:422
269579988,0cyclictest743-21snmpd07:58:452
269579988,0cyclictest741-21lldpd09:41:072
269579987,1cyclictest743-21snmpd12:12:062
269579987,1cyclictest743-21snmpd12:03:412
269579987,1cyclictest743-21snmpd10:06:222
269579987,1cyclictest743-21snmpd07:46:542
269579987,1cyclictest522-21avahi-daemon12:36:172
269579987,1cyclictest522-21avahi-daemon08:54:092
269579986,2cyclictest743-21snmpd08:57:112
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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