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#!/bin/sh
# flush memory with readonly shm/tmpfs pages
# Unfortunately the kernel disables anon LRU scan on zero swap space.
# If run a patched kernel without that kernel optimization,
# this script may trigger OOM which I suspect to be some kernel bug.
# lru_lock coverage
# 1781926 ____pagevec_lru_add
# 736056 shrink_inactive_list
. ./hw_vars
for i in `seq 1 $nr_task`
do
create_sparse_file $SHM_FILE-$i $shm_size
$USEMEM -f $SHM_FILE-$i --readonly $((shm_size / nr_task / 2)) &
done
wait
rm `seq -f $SHM_FILE-%g 1 $nr_task`
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