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slapd stops working when machine becomes CPU bound (ITS#3149)

Full_Name: James Blackwell
Version: 2.1.29
OS: Debian GNU
URL: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=245014
Submission from: (NULL) (

On my Debian GNU/sid machine, slapd stops serving if any user runs the

$ renice 19 $$; while [ 1==1 ]; do echo -n ""; done

The result of this command, run by *any* user logged in, is that nobody else can
log in.

A better example is that if a user compiles and runs the following code, nobody
can log in:

int main() { while(1) {} return 0; }