Package: insserv Version: 1.14.0-5 When update-rc.d is invoked (be it as part of some service installation or manually), on some machines it takes much more time than anticipated. Example:
# time update-rc.d apache2 defaults ... real 5m23.611s user 0m0.092s sys 0m0.088s Running an strace -f on the update-rc.d process showed that the biggest slowdowns are during fadvise64 WILLNEED system call. This system call is supposed to be asynchronous, should let the system know that it can prefetch the scripts, and return immediately. Unfortunately, this is not the case: https://groups.google.com/forum/#!topic/fa.linux.kernel/6jyLWFKQqQ8 Below is the patch that solves the issue. On machines with 5min+ prior run, it now takes 0.1s. Other machines did not incur any change in time this execution took. I have tested and confirmed this on both Squeeze and Wheezy. I have a Squeeze patch available too, if anyone's interested, though that's just cosmetics. Best regards, Bolesław Tokarski --- insserv-1.14.0.orig/insserv.c +++ insserv-1.14.0/insserv.c @@ -1823,7 +1823,7 @@ static void scan_script_locations(const continue; } - lsb = scan_script_defaults(dfd, d->d_name, override_path, &name, true, ignore); + lsb = scan_script_defaults(dfd, d->d_name, override_path, &name, false, ignore); if (!name) { warn("warning: script is corrupt or invalid: %s/%s%s\n", path, rcd, d->d_name); continue; @@ -2627,7 +2627,7 @@ int main (int argc, char *argv[]) const char *const name = argv[c]; service_t * first = (service_t*)0; char * provides, * begin, * token; - const uchar lsb = scan_script_defaults(dfd, name, override_path, (char**)0, true, ignore); + const uchar lsb = scan_script_defaults(dfd, name, override_path, (char**)0, false, ignore); if ((lsb & FOUND_LSB_HEADER) == 0) { if ((lsb & (FOUND_LSB_DEFAULT|FOUND_LSB_OVERRIDE)) == 0) _______________________________________________ Pkg-sysvinit-devel mailing list [email protected] http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-sysvinit-devel
