diff options
| author | Eric Wong <e@yhbt.net> | 2020-08-08 11:24:05 +0000 |
|---|---|---|
| committer | Eric Wong <e@yhbt.net> | 2020-08-09 18:41:42 +0000 |
| commit | c538c9593e4c4d8185c3131eab2d14c383fafe8f (patch) | |
| tree | 7199fcb0f9bc53e1757e2740aacbdd8a953d72b0 /lib | |
| parent | 5458d831698f79c58adf955dc11753d3b560374d (diff) | |
| download | public-inbox-c538c9593e4c4d8185c3131eab2d14c383fafe8f.tar.gz | |
getconf(1) itself is POSIX, while `_NPROCESSORS_ONLN' is not. However, FreeBSD (tested 11.4 and 12.1) and glibc (tested CentOS 7.x and Debian 10.x) both support `getconf _NPROCESSORS_ONLN'. GNU coreutils (and thus `nproc' or `gnproc') are not installed by default on the *BSDs, so we'll try the option most likely to exist on both glibc and *BSDs out-of-the-box.
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/PublicInbox/V2Writable.pm | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/lib/PublicInbox/V2Writable.pm b/lib/PublicInbox/V2Writable.pm index f7a318e5..dfcb4897 100644 --- a/lib/PublicInbox/V2Writable.pm +++ b/lib/PublicInbox/V2Writable.pm @@ -35,14 +35,13 @@ my $PACKING_FACTOR = 0.4; our $NPROC_MAX_DEFAULT = 4; sub detect_nproc () { - for my $nproc (qw(nproc gnproc)) { # GNU coreutils nproc - `$nproc 2>/dev/null` =~ /^(\d+)$/ and return $1; - } - # getconf(1) is POSIX, but *NPROCESSORS* vars are not for (qw(_NPROCESSORS_ONLN NPROCESSORS_ONLN)) { `getconf $_ 2>/dev/null` =~ /^(\d+)$/ and return $1; } + for my $nproc (qw(nproc gnproc)) { # GNU coreutils nproc + `$nproc 2>/dev/null` =~ /^(\d+)$/ and return $1; + } # should we bother with `sysctl hw.ncpu`? Those only give # us total processor count, not online processor count. |