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Why xtrabackup is so slow compared to a single cp ?

renato_shirarenato_shira EntrantCurrent User Role Beginner
IM experiencing a vast difference in copy time when I compare the ibdata creation rate in xtrabackup compared to a single cp.. why is that?

Some info:
xtrabackup: 14GB/hour (4MB/s)
cp: 120GB/hour (33MB/s)

Its the same machine and same disks

Comments

  • niljoshiniljoshi MySQL Sage Inactive User Role Beginner
    Hi, can you provide below details?

    - Xtrabackup version
    - MySQL/Percona Server version
    - OS version
  • renato_shirarenato_shira Entrant Current User Role Beginner
    - Xtrabackup 2.0
    - MySQL 5.1.48
    - Linux 2.6.21.7-2.fc8xen #1 SMP Fri Feb 15 12:34:28 EST 2008 x86_64 GNU/Linux
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