mjhjmtu

I am unable to list the locks associated with a process and information about the locks i.e How many threads share this lock etc.

Kindly tell my how to extract this information from a process ID.

My case:

i have run sysbench command

sysbench --test=threads --thread-locks=100 --max-time=20s run

i want to list locks that sysbench just created and information about the locks i.e which threads the sharing this lock etc

you can get lock process list using below command

lslocks

If you're talking about file locks,

lsof -p PID

will list all files opened by process with PID.

lsof -c processname

will list all files opened by processname.

Note that lsof lists also files opened only for read i.e. without file locks. The mode under which a file is open is specified as the fourth character in the FD (File Descriptor) column in the output:

 r for read access;
 w for write access;
 u for read and write access;
 space if mode unknown and no lock
 character follows;
 `-' if mode unknown and lock
 character follows.