Questions regarding journal replay

Ralf Hildebrandt Ralf.Hildebrandt at charite.de
Wed Feb 25 19:01:31 UTC 2009


* 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

-- 
Ralf Hildebrandt                                Ralf.Hildebrandt at charite.de
Charite - Universitätsmedizin Berlin            Tel.  +49 (0)30-450 570-155
Geschäftsbereich IT | Abt. Netzwerk             Fax.  +49 (0)30-450 570-962
Hindenburgdamm 30 | 12200 Berlin




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