Re: [coreutils] over aggressive threads in sort

[Jim Meyering]

Pádraig Brady wrote:
> FYI https://bugzilla.redhat.com/show_bug.cgi?id=655096

Ouch!  Thanks for forwarding that.

Here's one way to test for the bug:

  seq 100000 > in
  mkfifo fifo
  (for i in $(seq 12); do read line; echo $i; sleep .1; done
    cat > /dev/null) < fifo &
  (ulimit -t 1; ./sort in > fifo \
    || echo killed via $(env kill -l $(expr $? - 128)))

It fails on multi-core systems:

    1
    2
    3
    4
    5
    6
    7
    8
    9
    killed via XCPU
    10
    11
    12

But succeeds with the sort from coreutils-8.5.