dtf

Linux磁盘测试的源代码,测试磁盘的读写性能

#! /bin/csh
#
#	Script file to gather floppy disk performance data.
#
set MNT_POINT=$1
set LOG_FILE=$2
set DATA_FILE=$3
set DATA_LIMIT=$4
set BLOCK_SIZES=$5
set PASS_COUNT=$6
set ROT_DELAY=$7
#
set RAW_DEVICE=/dev/rfd0c
set BLOCK_DEVICE=/dev/fd0c
if ($MNT_POINT == '') then
	set MNT_POINT=/mnt
endif
#
if ($DATA_LIMIT == '') then
	set DATA_LIMIT=512k
endif
if ($DATA_FILE == '') then
	set DATA_FILE=$MNT_POINT/dt.data
endif
if ($DATA_LIMIT == '') then
	set DATA_LIMIT=1m
endif
if ($LOG_FILE == '') then
	set LOG_FILE=dtf.log
endif
if ($BLOCK_SIZES == '') then
	set BLOCK_SIZES="4k 8k"
endif
if ($PASS_COUNT == '') then
	set PASS_COUNT=1
endif
if ($ROT_DELAY == '') then
	set ROT_DELAY="0 1 2 3 4"
endif
#
rm -f $LOG_FILE ; rm -f $DATA_FILE

foreach bs ($BLOCK_SIZES)
    foreach rotdelay ($ROT_DELAY)
	tunefs -d $rotdelay $RAW_DEVICE >>& $LOG_FILE
	mount $BLOCK_DEVICE $MNT_POINT
	dt of=$DATA_FILE disable=verify limit=$DATA_LIMIT bs=$bs log=$LOG_FILE passes=$PASS_COUNT dispose=keep
	sync ; sync ; sync ; sleep 10
	#
	# Unmount to flush the buffer cache.
	#
	umount $MNT_POINT
	mount $BLOCK_DEVICE $MNT_POINT
	dt if=$DATA_FILE disable=compare limit=$DATA_LIMIT bs=$bs log=$LOG_FILE passes=$PASS_COUNT
	rm $DATA_FILE
	sync ; sync ; sync ; sleep 10
	umount $MNT_POINT
	echo "" >> $LOG_FILE
	echo "*** End of Test ***" >> $LOG_FILE
	echo "" >> $LOG_FILE
    end
end