time ls -l $DIR/$tdir | wc -l
batch_rpcs=$(calc_stats mdc.*.stats mds_batch)
# wait for statahead thread to quit and update statahead stats
time ls -l $DIR/$tdir | wc -l
batch_rpcs=$(calc_stats mdc.*.stats mds_batch)
# wait for statahead thread to quit and update statahead stats