Re: Getting FS access events

Rik van Riel
2001-05-14T03:09:38Z

On Sun, 13 May 2001, Richard Gooch wrote:
> Larry McVoy writes:

> > Ha. For once you're both wrong but not where you are thinking. One
> > of the few places that I actually hacked Linux was for exactly this
> > - it was in the 0.99 days I think. I saved the list of I/O's in a
> > file and filled the buffer cache with them at next boot. It
> > actually didn't help at all.
>
> Maybe you did something wrong :-)

How about "the data loads got instrumented, but the metadata
loads which caused over half of the disk seeks didn't" ?

(just a wild guess ... if it turns out to be true we may want
to look into doing agressive readahead on inode blocks ;))

regards,

Rik
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