[sheepdog] [PATCH] sheep: use tx/rx thread for data transfer

[Liu Yuan]

On 07/12/2012 03:34 PM, Liu Yuan wrote:
> I have run a simple test to test your patch and mine with vanilla code
> and no benefit is shown:
> 
> yours	mine	vanilla
> 67s	68s	65s

I did both read and write test, see following result:

nr	2	4	8
mine	26/8	39/8	71/11
yours	27/8	41/8	74/11
vanilla 25/9	41/7	73/11

26/8 means write use 26 second and read use 8 seconds.

This test shows we don't get any benefit from threaded tx/rx.

$ ./test.sh nr
===============
#!/bin/bash

pkill -9 sheep
pkill -9 collie

rm store/* -rf
nr=`seq 1 $1`
echo $nr
for i in `seq 0 7`; do sheep/sheep -d /home/tailai.ly/sheepdog/store/$i
-z $i -p $((7000+$i));sleep 1;done
for ((;;)); do
        if [ $(collie/collie node list | wc -l) -ne 9 ]; then
		sleep 1
        else
		break
        fi
done
collie/collie cluster format  -c 3
sleep 1

time1=`date +%s`
for i in $nr;do
collie/collie vdi create test$i 100M
done
sleep 1
for i in $nr;do
	dd if=/dev/urandom | collie/collie vdi write test$i -p 7000 &
done

echo wait for write to finish
for ((;;)); do
        if [ "$(pgrep collie)" ]; then
                sleep 1
        else
                break
        fi
done
time2=`date +%s`
echo write $(($time2 - $time1))

for i in $nr;do
	./collie/collie vdi read test$i -p 7000 | md5sum &
done
for ((;;)); do
        if [ "$(pgrep collie)" ]; then
                sleep 1
        else
                break
        fi
done
time3=`date +%s`
echo read $(($time3 - $time2))