DTO run with Nginx, dto only run 10ms and dto destructor function cleanup_dto executed, this cause DSA unmap and close wq portal.

[wllw210]

1 Run Nginx separately, it works fine:

2 Run DTO with Nginx,
2.1 Configure DTO:
➜ DTO git:(main) ✗ accel-config disable-device dsa0
accel-config disable-device dsa2
accel-config disable-device dsa4
accel-config disable-device dsa6

accel-config load-config -c ./dto-4-dsa.conf

accel-config enable-device dsa0
accel-config enable-device dsa2
accel-config enable-device dsa4
accel-config enable-device dsa6

accel-config enable-wq dsa0/wq0.0
accel-config enable-wq dsa2/wq2.0
accel-config enable-wq dsa4/wq4.0
accel-config enable-wq dsa6/wq6.0

export DTO_USESTDC_CALLS=0
export DTO_COLLECT_STATS=1
export DTO_WAIT_METHOD=yield
export DTO_MIN_BYTES=4096
export DTO_CPU_SIZE_FRACTION=0.33
export DTO_AUTO_ADJUST_KNOBS=1
disabled 1 device(s) out of 1
disabled 1 device(s) out of 1
dsa4 device not found
disabled 0 device(s) out of 1
dsa6 device not found
disabled 0 device(s) out of 1
device is not available
Parse json and set device fail: -1
enabled 1 device(s) out of 1
enabled 1 device(s) out of 1
dsa4 device not found
enabled 0 device(s) out of 1
dsa6 device not found
enabled 0 device(s) out of 1
enabled 1 wq(s) out of 1
enabled 1 wq(s) out of 1
dsa4 device not found
enabled 0 wq(s) out of 1
dsa6 device not found
enabled 0 wq(s) out of 1

2.2 Run DTO with Nginx:

3 Expect: when Nginx keep running, dto need keep running too.

[skuma24]

Hi, DTO logs the above output when the process terminates. There must have been one nginx process that terminated and thats why DTO printed above logs.
I reproduced the issue on my system and I can see that the process (pid) no longer exists for which DTO printed above logs. There are other nginx processes that continue to keep running.
I think it is an expected behavior. Please let me know if you think otherwise.