PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3023 www-data 20 0 262216 19280 8848 R 93.8 0.2 3:47.05 /usr/sbin/apach
Kernel release: 5.15.0-1002-aws
There are several that get stuck this way. Most do not return anything using strace -p . I've tried the root or earliest pid, but I can't find the culprit. I've tried:
rm /dev/random
mknod -m 644 /dev/random c 1 9
No luck.
Sometimes I get:
db1:/root# screen
db1:/root# strace -p 3015
strace: Process 3015 attached
futex(0x7f75134a7000, FUTEX_LOCK_PI, NULL^Cstrace: Process 3015 detached
<detached ...>
The root pid (lowest pid) says this:
db1:/var/log/apache2# strace -p 3002
strace: Process 3002 attached
pselect6(0, NULL, NULL, NULL, {tv_sec=0, tv_nsec=765119225}, NULL) = 0 (Timeout)
wait4(-1, 0x7ffdd64a2f64, WNOHANG|WSTOPPED, NULL) = 0
times({tms_utime=3 /* 0.03 s */, tms_stime=4 /* 0.04 s */, tms_cutime=0, tms_cstime=0}) = 1718048747
pselect6(0, NULL, NULL, NULL, {tv_sec=1, tv_nsec=0}, NULL) = 0 (Timeout)
wait4(-1, 0x7ffdd64a2f64, WNOHANG|WSTOPPED, NULL) = 0
I've updated, rebooted, it is a new installation of Ubuntu. Not sure what is wrong!
Nothing present in the apache logs or system logs. I can't find a specific error or error that would be of relation.
