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2026-04-04 - 01:30

OSADL QA Farm on Real-time of Mainline Linux

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Default latency plot of shadow in rack #4, slot #1

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, lowest P state: performance
Compare latency of primary with shadow system
Characteristics of the 376 highest latencies:
System rack4slot1s.osadl.org (updated Fri Apr 03, 2026 12:44:13)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
2988021160,3sleep30-21swapper/308:42:003
2988021160,3sleep30-21swapper/308:42:003
1025221010,3sleep30-21swapper/307:47:093
1025221010,3sleep30-21swapper/307:47:093
308552740,1chrt30853-21ntpq07:17:041
152972690,2sleep115300-21sort10:56:571
152972690,2sleep115300-21sort10:56:571
29742660,2chrt0-21swapper/208:56:592
29742660,2chrt0-21swapper/208:56:592
315002630,3sleep30-21swapper/310:12:053
172152600,3sleep20-21swapper/208:07:062
172152600,3sleep20-21swapper/208:07:062
132042560,3chrt0-21swapper/207:57:012
132042560,3chrt0-21swapper/207:57:012
132042560,3chrt0-21swapper/207:57:012
114412540,3sleep30-21swapper/309:17:103
114412540,3sleep30-21swapper/309:17:103
319312510,2sleep30-21swapper/307:21:523
34892490,4sleep30-21swapper/310:22:103
34892490,4sleep30-21swapper/310:22:103
69002480,4sleep30-21swapper/309:07:023
69002480,4sleep30-21swapper/309:07:023
69002480,4sleep30-21swapper/309:07:023
140172480,3chrt0-21swapper/212:17:102
140172480,3chrt0-21swapper/212:17:102
14612430,3chrt0-21swapper/008:52:020
306942420,3sleep20-21swapper/210:11:522
306942420,3sleep20-21swapper/210:11:522
119122420,2sleep111934-21basename09:21:471
119122420,2sleep111934-21basename09:21:471
147682410,2sleep20-21swapper/208:01:592
147682410,2sleep20-21swapper/208:01:592
28394994033,5cyclictest1-21systemd07:41:471
28394994033,5cyclictest1-21systemd07:41:471
28394994033,4cyclictest29315-21latency_hist08:41:471
28394994033,4cyclictest29315-21latency_hist08:41:471
21752400,4chrt0-21swapper/207:27:022
91362390,2chrt9135-21ntp_kernel_pll_09:12:051
91362390,2chrt9135-21ntp_kernel_pll_09:12:051
319352390,1sleep10-21swapper/110:12:111
13652390,3sleep30-21swapper/308:52:013
6782370,3sleep30-21swapper/308:51:493
6782370,3sleep30-21swapper/308:51:493
137492370,3sleep20-21swapper/210:52:002
137492370,3sleep20-21swapper/210:52:002
51472360,3sleep30-21swapper/309:02:023
51472360,3sleep30-21swapper/309:02:023
28394993528,5cyclictest21845-21sendmail08:21:471
28394993528,5cyclictest21845-21sendmail08:21:471
28394993427,5cyclictest28390-21cyclictest11:16:581
28394993427,5cyclictest28390-21cyclictest11:16:581
28394993427,5cyclictest28390-21cyclictest11:16:581
28393993425,7cyclictest321-21needreboot11:42:070
28393993425,7cyclictest321-21needreboot11:42:070
28393993425,7cyclictest321-21needreboot11:42:070
263822340,2chrt0-21swapper/111:26:521
263822340,2chrt0-21swapper/111:26:521
263822340,2chrt0-21swapper/111:26:521
184772340,2sleep118476-21ntp_kernel_pll_09:37:051
184772340,2sleep118476-21ntp_kernel_pll_09:37:051
184772340,2sleep118476-21ntp_kernel_pll_09:37:051
40292330,2chrt0-21swapper/307:32:013
28393993328,4cyclictest28390-21cyclictest11:47:040
28393993328,4cyclictest28390-21cyclictest11:47:040
28393993326,5cyclictest23614-21fschecks_time09:52:010
28393993326,5cyclictest23614-21fschecks_time09:52:010
28394993227,3cyclictest8164-21latency_hist09:11:471
28394993227,3cyclictest8164-21latency_hist09:11:471
28394993227,3cyclictest8164-21latency_hist09:11:471
28394993225,5cyclictest29718-21cut08:41:591
28394993225,5cyclictest29718-21cut08:41:591
28393993227,4cyclictest617-21lldpd11:26:470
28393993227,4cyclictest617-21lldpd11:26:470
28393993227,4cyclictest617-21lldpd11:26:470
28393993227,3cyclictest27952-21gltestperf08:36:590
28393993227,3cyclictest27952-21gltestperf08:36:590
28393993222,8cyclictest18994-21/usr/sbin/munin11:06:580
28393993222,8cyclictest18994-21/usr/sbin/munin11:06:580
234142320,3sleep30-21swapper/309:51:593
234142320,3sleep30-21swapper/309:51:593
28394993125,5cyclictest13728-21threads07:57:081
28394993125,5cyclictest13728-21threads07:57:081
28394993125,5cyclictest13728-21threads07:57:081
28394993120,3cyclictest90-1pr/ttyS012:16:181
28394993120,3cyclictest90-1pr/ttyS012:16:181
28393993127,3cyclictest90-1pr/ttyS009:38:520
28393993127,3cyclictest90-1pr/ttyS009:38:520
28393993127,3cyclictest90-1pr/ttyS009:38:520
28393993123,6cyclictest13220-21latency_hist10:51:470
28393993123,6cyclictest13220-21latency_hist10:51:470
28395993016,10cyclictest27575-21chrt11:27:092
28395993016,10cyclictest27575-21chrt11:27:092
28394993025,4cyclictest28390-21cyclictest11:11:541
28394993025,4cyclictest28390-21cyclictest11:11:541
28394993025,3cyclictest28390-21cyclictest10:02:001
28394993025,3cyclictest28390-21cyclictest10:02:001
28394993023,5cyclictest7518-21gltestperf12:02:001
28394993023,5cyclictest7518-21gltestperf12:02:001
28394993023,5cyclictest28390-21cyclictest08:02:141
28394993023,5cyclictest28390-21cyclictest08:02:141
28394993023,5cyclictest24265-21sendmail_mailtr09:52:091
28394993023,5cyclictest24265-21sendmail_mailtr09:52:091
28394993023,5cyclictest11080-21sshd10:43:301
28394993023,5cyclictest11080-21sshd10:43:301
28394993023,5cyclictest11080-21sshd10:43:301
28393993026,3cyclictest5021-21cron07:36:470
28394992923,4cyclictest4273-21fschecks_count10:26:591
28394992922,5cyclictest11353-21kernelversion07:52:011
28394992922,5cyclictest11353-21kernelversion07:52:011
28394992921,6cyclictest14321-21grep10:52:071
28394992921,6cyclictest14321-21grep10:52:071
28394992920,7cyclictest21324-21latency_hist09:46:491
28394992920,7cyclictest21324-21latency_hist09:46:491
28394992920,7cyclictest21324-21latency_hist09:46:491
28393992924,4cyclictest545-21in:imuxsock09:26:480
28393992924,4cyclictest545-21in:imuxsock09:26:480
28393992922,5cyclictest5395-21sshd10:27:300
28393992922,5cyclictest5395-21sshd10:27:300
28393992921,6cyclictest15904-21cpu09:31:580
28393992921,6cyclictest15904-21cpu09:31:580
28393992920,7cyclictest8009-21fschecks_count10:37:000
28393992920,7cyclictest8009-21fschecks_count10:37:000
28393992920,7cyclictest6317-21gltestperf10:31:590
28393992920,7cyclictest6317-21gltestperf10:31:590
38222280,2sleep13915-21latency07:32:001
31632280,2sleep13322-21sed10:22:091
2839999281,8cyclictest0-21swapper/310:11:593
2839999281,8cyclictest0-21swapper/310:11:593
28394992821,6cyclictest2367-21sshd08:54:291
28394992821,5cyclictest4152-21sshd08:58:291
28394992821,5cyclictest4152-21sshd08:58:291
28394992821,5cyclictest30427-21fschecks_count11:36:591
28394992821,5cyclictest30427-21fschecks_count11:36:591
28394992821,5cyclictest16032-21fschecks_count09:31:591
28394992821,5cyclictest16032-21fschecks_count09:31:591
28394992815,6cyclictest90-1pr/ttyS007:30:591
28393992823,3cyclictest6871-21gltestperf09:07:000
28393992823,3cyclictest6871-21gltestperf09:07:000
28393992823,3cyclictest6871-21gltestperf09:07:000
28393992823,3cyclictest0-21swapper/011:07:000
28393992823,3cyclictest0-21swapper/011:07:000
28393992821,5cyclictest28647-21sshd10:05:290
28393992821,5cyclictest28647-21sshd10:05:290
28393992820,6cyclictest30150-21missed_timers08:42:030
28393992820,6cyclictest30150-21missed_timers08:42:030
28393992819,7cyclictest31269-21cat11:37:090
28393992819,7cyclictest31269-21cat11:37:090
151732280,3sleep30-21swapper/312:22:013
151732280,3sleep30-21swapper/312:22:013
2839499276,5cyclictest281ktimers/107:47:411
2839499276,5cyclictest281ktimers/107:47:411
2839499276,10cyclictest15733-21/usr/sbin/munin12:22:101
2839499276,10cyclictest15733-21/usr/sbin/munin12:22:101
28394992721,4cyclictest14221-21sort09:26:591
28394992721,4cyclictest0-21swapper/108:27:081
28394992721,4cyclictest0-21swapper/108:27:081
28394992721,3cyclictest0-21swapper/109:57:111
28394992721,3cyclictest0-21swapper/109:57:111
28394992720,5cyclictest9120-21sshd10:37:301
28394992720,5cyclictest9120-21sshd10:37:301
28394992715,6cyclictest90-1pr/ttyS008:09:251
28394992715,6cyclictest90-1pr/ttyS008:09:251
28394992714,7cyclictest90-1pr/ttyS012:01:541
28394992714,7cyclictest90-1pr/ttyS012:01:541
28393992721,5cyclictest16250-21latency_hist08:06:470
28393992721,5cyclictest16250-21latency_hist08:06:470
28393992721,4cyclictest142-21systemd-journal07:40:410
28393992721,4cyclictest142-21systemd-journal07:40:410
28393992721,4cyclictest10150-21timerandwakeup12:07:090
28393992721,4cyclictest10150-21timerandwakeup12:07:090
28393992718,7cyclictest26027-21processes09:57:070
28393992718,7cyclictest26027-21processes09:57:070
28394992621,3cyclictest0-21swapper/112:36:471
28394992621,3cyclictest0-21swapper/112:36:471
28394992621,3cyclictest0-21swapper/111:56:471
28394992620,3cyclictest0-21swapper/108:22:051
28394992620,3cyclictest0-21swapper/108:22:051
28394992617,2cyclictest181rcu_preempt11:06:531
28394992617,2cyclictest181rcu_preempt11:06:531
28394992615,3cyclictest90-1pr/ttyS008:15:351
28394992615,3cyclictest90-1pr/ttyS008:15:351
28394992612,11cyclictest32135-21/usr/sbin/munin11:42:021
28394992612,11cyclictest32135-21/usr/sbin/munin11:42:021
28394992612,11cyclictest32135-21/usr/sbin/munin11:42:021
28393992621,3cyclictest0-21swapper/007:27:000
28393992620,3cyclictest0-21swapper/012:41:470
28393992620,3cyclictest0-21swapper/012:41:470
28393992620,3cyclictest0-21swapper/012:41:470
28393992619,5cyclictest756-21kernelversion10:17:010
28393992619,5cyclictest756-21kernelversion10:17:010
28393992619,5cyclictest28390-21cyclictest08:31:500
28393992619,5cyclictest28390-21cyclictest08:31:500
28393992619,5cyclictest17209-21kworker/u10:0-rpciod08:21:470
28393992619,5cyclictest17209-21kworker/u10:0-rpciod08:21:470
28393992618,6cyclictest31006-21fschecks_count10:12:010
28393992618,6cyclictest24631-21/usr/sbin/munin11:21:580
28393992618,6cyclictest24631-21/usr/sbin/munin11:21:580
28393992617,7cyclictest16949-21idleruntime-cro11:01:470
28393992617,7cyclictest16949-21idleruntime-cro11:01:470
28393992617,7cyclictest14090-21head10:52:040
28393992617,7cyclictest14090-21head10:52:040
2839499259,3cyclictest271rcuc/111:13:001
2839499259,3cyclictest271rcuc/111:13:001
2839499253,5cyclictest281ktimers/111:29:171
2839499253,5cyclictest281ktimers/111:29:171
28394992520,3cyclictest0-21swapper/112:17:011
28394992520,3cyclictest0-21swapper/112:17:011
28394992519,5cyclictest5158-21kernelversion09:02:021
28394992519,5cyclictest5158-21kernelversion09:02:021
28394992519,4cyclictest17077-21kernelversion12:27:031
28394992519,4cyclictest17077-21kernelversion12:27:031
28394992519,4cyclictest0-21swapper/110:47:111
28394992519,4cyclictest0-21swapper/110:47:111
28394992518,2cyclictest181rcu_preempt08:51:471
28394992518,2cyclictest181rcu_preempt08:51:471
28394992517,6cyclictest26700-21cut08:32:071
28394992517,6cyclictest26700-21cut08:32:071
28394992517,6cyclictest14984-21ls09:27:071
28394992517,6cyclictest14984-21ls09:27:071
28394992516,7cyclictest20538-21fschecks_time12:36:591
28394992516,7cyclictest20538-21fschecks_time12:36:591
28394992516,7cyclictest20538-21fschecks_time12:36:591
28394992513,10cyclictest700-21192.168.115.40-manager09:24:001
28393992521,2cyclictest0-21swapper/012:01:470
28393992521,2cyclictest0-21swapper/012:01:470
28393992519,4cyclictest1346-21avahi-daemon12:12:080
28393992519,4cyclictest1346-21avahi-daemon12:12:080
28393992516,7cyclictest26080-21cut08:31:590
28393992516,7cyclictest26080-21cut08:31:590
2839499249,3cyclictest271rcuc/112:08:171
2839499249,3cyclictest271rcuc/112:08:171
28394992417,4cyclictest0-21swapper/107:42:081
28394992417,4cyclictest0-21swapper/107:42:081
28394992417,2cyclictest181rcu_preempt11:31:591
28394992417,2cyclictest181rcu_preempt11:31:591
28394992417,2cyclictest181rcu_preempt10:33:051
28394992417,2cyclictest181rcu_preempt10:33:051
28394992417,2cyclictest181rcu_preempt10:21:331
28394992417,2cyclictest181rcu_preempt10:21:331
28393992420,2cyclictest0-21swapper/007:51:470
28393992420,2cyclictest0-21swapper/007:51:470
28393992419,3cyclictest0-21swapper/008:01:470
28393992419,3cyclictest0-21swapper/008:01:470
28393992419,3cyclictest0-21swapper/008:01:470
2839399241,8cyclictest91352ntp_kernel_pll_09:12:050
2839399241,8cyclictest91352ntp_kernel_pll_09:12:050
28393992417,5cyclictest32694-21needreboot07:22:040
28393992416,6cyclictest10948-21needreboot09:17:050
28393992416,6cyclictest10948-21needreboot09:17:050
28393992415,7cyclictest29730-21ntp_states10:07:080
145132240,3sleep30-21swapper/310:52:093
145132240,3sleep30-21swapper/310:52:093
319142230,3sleep20-21swapper/207:21:512
2839499235,4cyclictest0-21swapper/110:07:081
2839499235,4cyclictest0-21swapper/110:07:081
2839499234,4cyclictest281ktimers/111:48:411
2839499234,4cyclictest281ktimers/111:48:411
2839499232,6cyclictest40482/usr/sbin/munin10:27:011
2839499232,6cyclictest40482/usr/sbin/munin10:27:011
28394992318,2cyclictest0-21swapper/107:22:061
28394992317,4cyclictest281ktimers/109:47:011
28394992317,4cyclictest281ktimers/109:47:011
28393992319,2cyclictest0-21swapper/011:16:560
28393992318,4cyclictest142-21systemd-journal08:58:290
28393992318,4cyclictest142-21systemd-journal08:58:290
28393992318,3cyclictest31727-21gltestperf08:46:590
28393992318,3cyclictest31727-21gltestperf08:46:590
28393992318,3cyclictest0-21swapper/012:17:040
28393992318,3cyclictest0-21swapper/012:17:040
28393992318,3cyclictest0-21swapper/010:46:590
28393992317,5cyclictest31192-21head10:12:020
28393992317,3cyclictest0-21swapper/012:02:070
28393992317,3cyclictest0-21swapper/012:02:070
28393992316,5cyclictest22572-21kernelversion08:22:010
28393992316,5cyclictest22572-21kernelversion08:22:010
28393992316,5cyclictest0-21swapper/012:27:110
28393992316,5cyclictest0-21swapper/012:27:110
28393992316,5cyclictest0-21swapper/011:32:070
28393992316,5cyclictest0-21swapper/011:32:070
28393992316,4cyclictest0-21swapper/011:12:090
28393992316,4cyclictest0-21swapper/011:12:090
28393992314,7cyclictest30858-21ntp_kernel_pll_07:17:040
28393992217,3cyclictest0-21swapper/010:46:460
28393992217,3cyclictest0-21swapper/010:46:460
28393992215,5cyclictest20442-21processes09:42:060
28393992215,5cyclictest20442-21processes09:42:060
28393992215,5cyclictest20442-21processes09:42:060
2839399214,2cyclictest181rcu_preempt07:42:020
2839399214,2cyclictest181rcu_preempt07:42:020
28393992116,3cyclictest0-21swapper/012:31:580
28393992116,3cyclictest0-21swapper/012:31:580
28393992114,5cyclictest28390-21cyclictest08:07:030
28393992114,5cyclictest28390-21cyclictest08:07:030
28393992112,7cyclictest4893-21fschecks_time09:02:000
28393992112,7cyclictest4893-21fschecks_time09:02:000
2839399211,16cyclictest27047-21ls11:27:030
2839399211,16cyclictest27047-21ls11:27:030
28393992016,3cyclictest90-1pr/ttyS008:12:080
28393992016,3cyclictest90-1pr/ttyS008:12:080
28393992016,2cyclictest0-21swapper/012:22:100
28393992016,2cyclictest0-21swapper/012:22:100
28393992016,2cyclictest0-21swapper/007:51:590
28393992016,2cyclictest0-21swapper/007:51:590
2839399201,4cyclictest0-21swapper/010:25:090
2839399201,4cyclictest0-21swapper/010:25:090
28393992013,4cyclictest0-21swapper/009:27:080
28393992013,4cyclictest0-21swapper/009:27:080
2839399201,13cyclictest22099-21ls09:47:030
2839399201,13cyclictest22099-21ls09:47:030
28393992010,8cyclictest3589-21df11:51:580
2839599191,13cyclictest323292sleep207:21:592
2839599191,13cyclictest16792-21taskset09:32:082
2839599191,13cyclictest16792-21taskset09:32:082
2839999187,7cyclictest169152sleep309:32:103
2839999187,7cyclictest169152sleep309:32:103
2839999183,9cyclictest0-21swapper/311:53:303
2839999183,9cyclictest0-21swapper/311:11:173
2839999183,9cyclictest0-21swapper/311:11:173
2839999183,9cyclictest0-21swapper/310:27:303
2839999183,9cyclictest0-21swapper/310:27:303
2839999183,9cyclictest0-21swapper/309:13:293
2839999183,9cyclictest0-21swapper/309:13:293
2839599183,9cyclictest0-21swapper/212:32:332
2839599183,9cyclictest0-21swapper/212:32:332
2839599183,9cyclictest0-21swapper/209:47:292
2839599183,9cyclictest0-21swapper/209:47:292
2839599181,12cyclictest5762-21chrt09:02:092
2839599181,12cyclictest5762-21chrt09:02:092
2839599181,12cyclictest31514-21chrt11:37:102
2839599181,12cyclictest31514-21chrt11:37:102
2839599181,12cyclictest17108-21chrt12:27:032
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2839599181,12cyclictest10985-21chrt07:51:582
2839599181,12cyclictest10985-21chrt07:51:582
2839999173,9cyclictest0-21swapper/312:27:333
2839999173,9cyclictest0-21swapper/312:27:333
2839999173,8cyclictest0-21swapper/310:43:303
2839999173,8cyclictest0-21swapper/310:43:303
2839999173,8cyclictest0-21swapper/310:43:303
2839999172,9cyclictest227972sleep309:47:303
2839999172,9cyclictest227972sleep309:47:303
2839999172,11cyclictest0-21swapper/310:17:083
2839999172,11cyclictest0-21swapper/310:17:083
2839999171,12cyclictest25954-21chrt09:57:053
2839999171,12cyclictest25954-21chrt09:57:053
2839999171,11cyclictest3161-21taskset08:57:003
2839999171,11cyclictest3161-21taskset08:57:003
2839999171,11cyclictest18725-21taskset08:12:013
2839999171,11cyclictest18725-21taskset08:12:013
2839599173,9cyclictest0-21swapper/212:12:322
2839599173,9cyclictest0-21swapper/212:12:322
2839599172,11cyclictest0-21swapper/210:46:592
2839599172,11cyclictest0-21swapper/210:46:592
2839599171,12cyclictest0-21swapper/211:06:572
2839599171,12cyclictest0-21swapper/211:06:572
2839599171,11cyclictest352-21chrt10:16:582
2839599171,11cyclictest352-21chrt10:16:582
2839599171,11cyclictest3323-21chrt10:22:092
2839599171,11cyclictest3323-21chrt10:22:092
2839599171,11cyclictest20855-21chrt09:42:092
2839599171,11cyclictest20855-21chrt09:42:092
2839599171,11cyclictest20855-21chrt09:42:092
2839599171,11cyclictest0-21swapper/209:37:002
2839599171,11cyclictest0-21swapper/209:37:002
2839599171,11cyclictest0-21swapper/209:37:002
2839599171,10cyclictest8910-21chrt09:12:022
2839599171,10cyclictest8910-21chrt09:12:022
186802170,3sleep30-21swapper/312:31:583
186802170,3sleep30-21swapper/312:31:583
108622170,3sleep30-21swapper/312:11:523
108622170,3sleep30-21swapper/312:11:523
2839999162,9cyclictest0-21swapper/311:16:563
2839999162,9cyclictest0-21swapper/311:16:563
2839999162,9cyclictest0-21swapper/311:16:563
2839999161,9cyclictest27266-21taskset11:27:063
2839999161,9cyclictest27266-21taskset11:27:063
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