Hi Frederick,
> #!/bin/bash
> SCREEN=/usr/bin/screen
> $SCREEN -dmS x
> time $SCREEN -S x -X setenv A B
> $SCREEN -S x -X quit
Perhaps it's closing more file descriptors now than before?
$ strace -c screen -dmS x
Directory '/run/screens' must have mode 777.
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
99.98 11.762280 22 524299 524285 close
0.00 0.000328 16 20 8 openat
0.00 0.000323 10 30 mmap
0.00 0.000304 16 18 read
0.00 0.000192 14 13 fstat
0.00 0.000132 66 2 2 connect
0.00 0.000130 32 4 lstat
0.00 0.000104 26 4 rt_sigaction
0.00 0.000094 94 1 readlink
0.00 0.000092 46 2 socket
0.00 0.000071 7 9 7 stat
0.00 0.000063 31 2 munmap
0.00 0.000063 21 3 brk
0.00 0.000048 48 1 write
0.00 0.000041 3 11 mprotect
0.00 0.000041 10 4 4 access
0.00 0.000032 32 1 ioctl
0.00 0.000028 7 4 lseek
0.00 0.000025 25 1 umask
0.00 0.000025 25 1 getuid
0.00 0.000025 25 1 getgid
0.00 0.000025 25 1 geteuid
0.00 0.000024 24 1 getegid
0.00 0.000000 0 1 execve
0.00 0.000000 0 3 fcntl
0.00 0.000000 0 2 1 arch_prctl
0.00 0.000000 0 1 prlimit64
------ ----------- ----------- --------- --------- ----------------
100.00 11.764490 524440 524307 total
$
And that's because of
prlimit64(0, RLIMIT_NOFILE, NULL, {rlim_cur=1024, rlim_max=512*1024}) = 0
close(524287) = -1 EBADF (Bad file descriptor)
close(524286) = -1 EBADF (Bad file descriptor)
close(524285) = -1 EBADF (Bad file descriptor)
...
--
Cheers, Ralph.
