# HG changeset patch
# User Rob Landley <rob@landley.net>
# Date 1315661312 18000
# Node ID 4923bba45afe45e26671286b0b2bd4d34ad1b426
# Parent  e93e6c80ebdcafee5dc79de085e8eb1dd829885f
Try to auto-balance FORK=1 and CPUS so as not to overload build server.

diff -r e93e6c80ebdc -r 4923bba45afe more/buildall.sh
--- a/more/buildall.sh	Sat Sep 10 08:28:00 2011 -0500
+++ b/more/buildall.sh	Sat Sep 10 08:28:32 2011 -0500
@@ -28,6 +28,17 @@
 
 cp packages/MANIFEST build || dienow
 
+# Adjust $CPUS so as not to overload the machine, max 2 build processes
+# per gigabyte of RAM
+
+if [ ! -z "$FORK" ] && [ -z "$CPUS" ]
+then
+  MEGS=$(($(awk '/MemTotal:/{print $2}' /proc/meminfo)/1024))
+  TARGET_COUNT=$(find sources/targets -maxdepth 1 -type f | wc -l)
+  export CPUS=$(($MEGS/($TARGET_COUNT*512)))
+  [ "$CPUS" -lt 1 ] && CPUS=1
+fi
+
 # Build all non-hw targets, possibly in parallel
 
 more/for-each-target.sh \