Questions regarding journal replay

Theodore Tso tytso at mit.edu
Wed Feb 25 21:15:31 UTC 2009


On Wed, Feb 25, 2009 at 08:01:31PM +0100, Ralf Hildebrandt wrote:
> * Theodore Tso <tytso at mit.edu>:
> 
> > Increasing the journal size may speed up certain filesystem workloads
> > which are causing the journal to wrap very frequently.  However,
> > increasing the journal *will* increase the time to replay the journal....
> 
> Indeed. This is a Maildir-style mailbox server. Many small writes,
> reads and deletes.
> 
> > How long did the journal replay take when you were using the 128MB
> > internal inode?
> 
> 800s

So maybe I missed it, but about how long did it take with your 32GB
external journal?

						- Ted




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