Comment 15 for bug 645581

Yes, it seems the reason is that stream uses tar4ibd in new version

Unfortunately there is not so much we can do, as tar4ibd is recommended for stream, and it is needed
to guarantee no data corruption.

time ./innobackupex-1.5.1 --stream=tar --force-tar --ibbackup=/data/vadim/test-xtrabackup/xtrabackup-1.2/bin/xtrabackup ./ >> /mnt/x25m/test/3.tar

real 3m5.514s
user 0m0.721s
sys 0m50.415s

time ./innobackupex-1.5.1 --stream=tar --ibbackup=/data/vadim/test-xtrabackup/xtrabackup-1.2/bin/xtrabackup ./ >> /mnt/x25m/test/2.tar

real 4m56.655s
user 2m44.840s
sys 1m33.538s