Regarding the issue where the Parca agent can only collect the kernel-mode system call stack but cannot obtain the system call stack information of the mysqld itself.

[xty-11]

Dear Author, I want to continuously monitor the relevant information of the mysqld process to detect the call stack information during the operation of mysqld.
However, I have encountered a problem. I can only collect the system call information of mysqld, but there is no code of the mysqld process itself.
As shown in the figure in the attachment:

My configuration file is as follows:

parca.yaml

object_storage:
bucket:
type: "FILESYSTEM"
config:
directory: "./data"

parca-agent.yaml

node: "test-mysqld"

profiling:
user-space:
enabled: true
kernel-space:
enabled: false

Run the command as follows:
[root@perftest-1602786448 tem]# sudo ./parca-agent_0.41.1_Linux_x86_64 --config-path=./parca-agent.yaml --remote-store-address=127.0.0.1:7070 --remote-store-insecure
[root@perftest-1602786448 tem]# ./parca --config-path=./parca.yaml

I also checked these parameters on my Linux system:
[root@perftest-1602786448 tem]# uname -r
5.10.0-1.oe.jd_445.x86_64
[root@perftest-1602786448 tem]# zcat /proc/config.gz | grep CONFIG_UNWINDER_ORC
CONFIG_UNWINDER_ORC=y
[root@perftest-1602786448 tem]# zcat /proc/config.gz | grep CONFIG_BPF_USER
[root@perftest-1602786448 tem]# zcat /proc/config.gz | grep CONFIG_BPF
CONFIG_BPF=y
# CONFIG_BPF_LSM is not set
CONFIG_BPF_SCHED=y
CONFIG_BPF_SYSCALL=y
CONFIG_BPF_JIT_ALWAYS_ON=y
CONFIG_BPF_JIT_DEFAULT_ON=y
# CONFIG_BPF_UNPRIV_DEFAULT_OFF is not set
# CONFIG_BPF_PRELOAD is not set
# CONFIG_BPFILTER is not set
CONFIG_BPF_JIT=y
CONFIG_BPF_STREAM_PARSER=y
CONFIG_BPF_EVENTS=y
# CONFIG_BPF_KPROBE_OVERRIDE is not set

Could you please tell me why I am unable to obtain the user-level process information of mysqld? I don't know how to solve this problem. I am looking forward to your reply.

[xty-11]

To add, I can obtain the call stack information of mysqld by using perf record.