OpenAMP's performance

[JjchenGravityxr]

I use echo_test to test between A53 and R5.
The [Sending time] is fast (<200us).
The [Receiving time] is slow (about 4500us).
I don't know what went wrong.
I want to know about the [Receiving time].

LOG is as follows:

Echo test start

Master>probe rpmsg_char

• lsmod
  Module Size Used by
  rpmsg_char 16384 0
  virtio_rpmsg_bus 20480 0
  rpmsg_ns 16384 1 virtio_rpmsg_bus
  rpmsg_core 16384 3 virtio_rpmsg_bus,rpmsg_char,rpmsg_ns
  zynqmp_r5_remoteproc 16384 0
  mali 229376 0
  xilinx_vfmc 28672 0
  phy_xilinx_vphy 77824 4
  uio_pdrv_genirq 16384 0
  dmaproxy 16384 0

• modprobe rpmsg_char
  lookup_channel():232 using dev file: virtio0.rpmsg-openamp-demo-channel.-1.1024
  bind_rpmsg_chrdev():128 open /sys/bus/rpmsg/devices/virtio0.rpmsg-openamp-demo-channel.-1.1024/driver_override
  bind_rpmsg_chrdev():151 write virtio0.rpmsg-openamp-demo-channel.-1.1024 to /sys/bus/rpmsg/drivers/rpmsg_chrdev/bind
  get_rpmsg_chrdev_fd():171 opendir /sys/bus/rpmsg/devices/virtio0.rpmsg-openamp-demo-channel.-1.1024/rpmsg
  get_rpmsg_chrdev_fd():181 open /dev/rpmsg_ctrl1
  main():307 rpmsg_create_ept: rpmsg-openamp-demo-channel[src=0,dst=0x400]
  checking /sys/class/rpmsg/rpmsg_ctrl1/rpmsg0/name
  svc_name: rpmsg-openamp-demo-channel
  .
  open /dev/rpmsg0

  Echo Test Round 0

sending payload number 0 of size 17
[Sending time use:184]echo test: sent : 17
[Receiving time use:574]received payload number 0 of size 17

sending payload number 1 of size 18
[Sending time use:114]echo test: sent : 18
[Receiving time use:4472]received payload number 1 of size 18

sending payload number 2 of size 19
[Sending time use:114]echo test: sent : 19
[Receiving time use:4465]received payload number 2 of size 19

sending payload number 3 of size 20
[Sending time use:110]echo test: sent : 20
[Receiving time use:4437]received payload number 3 of size 20

sending payload number 4 of size 21
[Sending time use:110]echo test: sent : 21
[Receiving time use:4465]received payload number 4 of size 21

sending payload number 5 of size 22
[Sending time use:115]echo test: sent : 22
[Receiving time use:4466]received payload number 5 of size 22

sending payload number 6 of size 23
[Sending time use:117]echo test: sent : 23
[Receiving time use:4466]received payload number 6 of size 23

sending payload number 7 of size 24
[Sending time use:111]echo test: sent : 24
[Receiving time use:4466]received payload number 7 of size 24

sending payload number 8 of size 25
[Sending time use:111]echo test: sent : 25
[Receiving time use:4472]received payload number 8 of size 25

sending payload number 9 of size 26
[Sending time use:110]echo test: sent : 26
[Receiving time use:4485]received payload number 9 of size 26

sending payload number 10 of size 27
[Sending time use:110]echo test: sent : 27
[Receiving time use:4461]received payload number 10 of size 27

sending payload number 11 of size 28
[Sending time use:115]echo test: sent : 28
[Receiving time use:4469]received payload number 11 of size 28

sending payload number 12 of size 29
[Sending time use:118]echo test: sent : 29
[Receiving time use:4471]received payload number 12 of size 29

sending payload number 13 of size 30
[Sending time use:114]echo test: sent : 30
[Receiving time use:4470]received payload number 13 of size 30

[k6man]

Hello, we have the same problem, did you find the solution? thanks

[arnopo]

related issue : #442