xtrabackup 2.0 generates a lot of IO compared to 1.6
After a migration from XtraBackup 1.6.4 to 2.0.x we noticed that execution time for backups increased by a factor of ~2.5 on all the systems where was deployed (independently from the size from the backups, that could range from tens to hundreds of GB).
How to reproduce:
tar -zxf xtrabackup-
tar -zxf percona-
Attached are the output of "vmstat 10" and " iostat -k -d -x 10 /dev/sd[fihg] " , for XtraBackup-1.6.4 and XtraBackup-2.0.4 .
Note: all the instances are EC2 instances with EBS volumes configured on RAID10 . We noticed the same behavior with 4 or 8 EBS volumes, and with chunks of 64kB or 256kB
|Sergei Glushchenko (sergei.glushchenko) wrote : Re: [Bug 1093385] Re: xtrabackup 2.0 generates a lot of IO compared to 1.6||#5|