Hi,I was investigating a difference I'm seeing in two proxmox servers I work on. They have very similar hardware (sata disks in soft-raid, proxmox 3.1, similar specs).One of them has ext3 as the filesystem, while the other is ext4 (the beefier machine). The ext3 server had 560 fsyncs/sec The ext4 server had 51 fsyncs/sec (ouch). I remembered the ext4 barriers issue and mounted with barrier=0. The result was an astonishing 1171 fsync/sec. So, the default proxmox partition is ext3 which supports no barriers, while the ext4 has barriers by default. I am thinking about using ext4 with no-barriers. It should be no worse than using the default ext3 everybody has been using for a decade. Sure, it's only soft-raid, but on a server hosted in a web farm, so power supply should be no problem. Do you think this is a bad idea? jinjer ADDED: There is a problem with new lines on most of my posts, using different browsers: Is this a vbulletin problem or mine?
↧