Dan Nelson wrote:
That'd be handy, but at least on my system the data prefetcher isn't
really called often enough to make a difference either way (assuming
the counts are accurate). Metadata prefetch is a big win, however.
arcstats.prefetch_data_hits: 4538242 (13%)
arcstats.prefetch_data_misses: 29298997
arcstats.prefetch_metadata_hits: 593799808 (96%)
arcstats.prefetch_metadata_misses: 21582847
You are much luckier than me. For obvious reasons, I would like to
completely disable data prefetch but leave on metadata prefetch.
I believe it would speed up the filesystem plus save RAM (less wasted
use of ARC). But especially desktop systems would not need to waste
space on such aggressive prefetching.
- Andrew
_______________________________________________
[email protected] mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-stable
To unsubscribe, send any mail to "[EMAIL PROTECTED]"
