The following message is appearing when running HQ-2.2.5 over RHEL6 and a ext4 filesystem in a VMWare ESX4.1 Virtual Machine, any idea?
"EXT4-fs (dm-2): Unaligned AIO/DIO on inode 131081 by java; performance will be poor."
kernel version: 2.6.32-220.el6.x86_64
libaio version: libaio-0.3.107-10.el6.x86_64
Jose L. Montoya
AIO will use hardware access and kernel directly. Since you are going through a layer on a hipper visor maybe the system is not aligned with the actual hardware hence you are getting that message.
You should look at how that is accomplished on amazon and maybe you should consider journal NiIO on that case which also is fast and asynchronous.
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