b=13007

i=Adilger

test_78: limit filesize to 1/2 of memtotal -256MB

diff --git a/lustre/tests/sanity.sh b/lustre/tests/sanity.sh
index 78f3baa..b008071 100644 (file)
--- a/lustre/tests/sanity.sh
+++ b/lustre/tests/sanity.sh
@@ -3424,8 +3424,12 @@ test_78() { # bug 10901
        NSEQ=5
        F78SIZE=$(($(awk '/MemFree:/ { print $2 }' /proc/meminfo) / 1024))
        echo "MemFree: $F78SIZE, Max file size: $MAXFREE"
-       MEMTOTAL=$(($(awk '/MemTotal:/ { print $2 }' /proc/meminfo) / 2048))
-       echo "MemTotal: $((MEMTOTAL * 2))"
+       MEMTOTAL=$(($(awk '/MemTotal:/ { print $2 }' /proc/meminfo) / 1024))
+       echo "MemTotal: $MEMTOTAL"
+# reserve 256MB of memory for the kernel and other running processes,
+# and then take 1/2 of the remaining memory for the read/write buffers.
+       MEMTOTAL=$(((MEMTOTAL - 256 ) / 2))
+       echo "Mem to use for directio: $MEMTOTAL"
        [ $F78SIZE -gt $MEMTOTAL ] && F78SIZE=$MEMTOTAL
        [ $F78SIZE -gt 512 ] && F78SIZE=512
        [ $F78SIZE -gt $((MAXFREE / 1024)) ] && F78SIZE=$((MAXFREE / 1024))