Tool/software: Linux
hello , i do mang jobs on a15(hlos), the usage of cpu is 60%. i found the camera fps is just 20fps , but i want 30 fps . i dump some log as follows. & found that all the ipcin link latency is big . how to improve it ? thanks .
[HOST] [IPU2 ] 1122.373391 s: [ IPC_OUT_0 ] LATENCY,
[HOST] [IPU2 ] 1122.373452 s: ********************
[HOST] [IPU2 ] 1122.373513 s: Local Link Latency : Avg = 9 us, Min = 0 us, Max = 61 us,
[HOST] [IPU2 ] 1122.373665 s: Source to Link Latency : Avg = 100 us, Min = 61 us, Max = 213 us,
[HOST] [HOST ] 1122.374916 s: [ IPC_IN_0 ] LATENCY,
[HOST] [HOST ] 1122.374946 s: ********************
[HOST] [HOST ] 1122.374946 s: Local Link Latency : Avg = 14 us, Min = 0 us, Max = 305 us,
[HOST] [HOST ] 1122.374946 s: Source to Link Latency : Avg = 26015 us, Min = 213 us, Max = 115567 us,
[HOST] [HOST ] 1122.374946 s: [ IPC_IN_0 ] Detailed IPC Latency Statistics [ IPU2 -> HOST ] ,
[HOST] [HOST ] 1122.374977 s: ***************************************************************
[HOST] [HOST ] 1122.374977 s: IPC One-way Buffer Passing Latency (usecs) : Avg = 25942, Min = 152, Max = 115506
[HOST] [HOST ] 1122.374977 s: IPC One-way Notify Interrupt Latency (usecs) : Avg = 25870, Min = 91, Max = 115354
[HOST] [HOST ] 1122.375190 s: [ ALG_SIMPLEISP ] LATENCY,
[HOST] [HOST ] 1122.375190 s: ********************
[HOST] [HOST ] 1122.375190 s: Local Link Latency : Avg = 4019 us, Min = 2226 us, Max = 8388 us,
[HOST] [HOST ] 1122.375190 s: Source to Link Latency : Avg = 30892 us, Min = 2471 us, Max = 119624 us,
[HOST] [HOST ] 1122.375434 s: [ IPC_OUT_0 ] LATENCY,
[HOST] [HOST ] 1122.375465 s: ********************
[HOST] [HOST ] 1122.375465 s: Local Link Latency : Avg = 2 us, Min = 0 us, Max = 153 us,
[HOST] [HOST ] 1122.375465 s: Source to Link Latency : Avg = 31151 us, Min = 2532 us, Max = 119746 us,
[HOST] [HOST ] 1122.375495 s:
[HOST] [IPU2 ] 1122.378240 s: [ IPC_IN_0 ] LATENCY,
[HOST] [IPU2 ] 1122.378301 s: ********************
[HOST] [IPU2 ] 1122.378393 s: Local Link Latency : Avg = 27 us, Min = 0 us, Max = 122 us,
[HOST] [IPU2 ] 1122.378515 s: Source to Link Latency : Avg = 31378 us, Min = 2776 us, Max = 119960 us,
[HOST] [IPU2 ] 1122.378759 s: [ IPC_IN_0 ] Detailed IPC Latency Statistics [ HOST -> IPU2 ] ,
[HOST] [IPU2 ] 1122.378881 s: ***************************************************************
[HOST] [IPU2 ] 1122.378972 s: IPC One-way Buffer Passing Latency (usecs) : Avg = 241, Min = 152, Max = 549
[HOST] [IPU2 ] 1122.379125 s: IPC One-way Notify Interrupt Latency (usecs) : Avg = 163, Min = 91, Max = 428
[HOST] [IPU2 ] 1122.381870 s: [ ENCODE ] LATENCY,
[HOST] [IPU2 ] 1122.381931 s: ********************
[HOST] [IPU2 ] 1122.381992 s: Local Link Latency : Avg = 7746 us, Min = 6100 us, Max = 10370 us,
[HOST] [IPU2 ] 1122.382114 s: Source to Link Latency : Avg = 39295 us, Min = 9151 us, Max = 128683 us,
[HOST] [IPU2 ] 1122.386018 s: [ IPC_OUT_1 ] LATENCY,
[HOST] [IPU2 ] 1122.386079 s: ********************
[HOST] [IPU2 ] 1122.386140 s: Local Link Latency : Avg = 10 us, Min = 0 us, Max = 122 us,
[HOST] [IPU2 ] 1122.386262 s: Source to Link Latency : Avg = 39506 us, Min = 9303 us, Max = 129019 us,
[HOST] [HOST ] 1122.388000 s: [ IPC_IN_1 ] LATENCY,
[HOST] [HOST ] 1122.388000 s: ********************
[HOST] [HOST ] 1122.388031 s: Local Link Latency : Avg = 13 us, Min = 0 us, Max = 153 us,
[HOST] [HOST ] 1122.388031 s: Source to Link Latency : Avg = 61428 us, Min = 10249 us, Max = 243763 us,
[HOST] [HOST ] 1122.388061 s:
[HOST] [HOST ] 1122.388061 s: [ IPC_IN_1 ] Detailed IPC Latency Statistics [ IPU2 -> HOST ] ,
[HOST] [HOST ] 1122.388061 s: ***************************************************************
[HOST] [HOST ] 1122.388092 s: IPC One-way Buffer Passing Latency (usecs) : Avg = 21953, Min = 122, Max = 130086
[HOST] [HOST ] 1122.388122 s: IPC One-way Notify Interrupt Latency (usecs) : Avg = 21879, Min = 91, Max = 130025
