Bill Davidsen wrote:
John Hughes wrote:
An external journal can be a huge win for ext3 if you are doing lots
of file creates/deletes. (Striped raid, i.e.
raid0/raid5/raid6/raid10 doesn't help the journal much as it is used
sequentially. In my tests putting the journal on a raid1 and the
rest of the fs on a raid10 makes things go much faster. If you have
enough disks of course :-))
You might try mounting with data=journal and see what performance you
get with small reads and writes. Might surprise you. I hadn't thought
of using raid1 (or raid0 if speed is more important than survival),
but I have been playing with using SSD just for the journal. As you
say, when you do lots of creates or deletes it makes a big difference.
Yup, data=journal will be in the next tests I do.
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