On Thursday 21 Jul 2011 04:59:50 Evan Daniel wrote:
> On Mon, Jul 18, 2011 at 11:24 AM, Matthew Toseland
> <toad at amphibian.dyndns.org> wrote:
> > Freenet 0.7.5 build 1385 is now available, please upgrade.
> >
> > The main change is merging the store-io branch, aka slot filters. This is a 
> > replacement for the old datastore bloom filters. It keeps 4 bytes in memory 
> > for each slot in the datastore, indicating whether they are full and the 
> > first few bytes of the (hashed, salted) key. This is slightly smaller than 
> > the old bloom filters, but is kept on the heap, not memory mapped, so it 
> > will increase your memory limit in wrapper.conf slightly when you first run 
> > it. It should greatly reduce disk I/O, in particular disk reads caused by 
> > writing a block to the datastore. It will delete the old bloom filters and 
> > build the new slotfilter files, which will take some time, during which the 
> > node will be using the disk quite heavily, but after that it should be much 
> > reduced.
> >
> > Please let us know if there are any problems! There is also a new version 
> > of FlogHelper (which didn't work with the last build), a new load 
> > management fix and some minor stuff.
> 
> Neat to see this feature going in :)
> 
> Upgraded earlier today. I'm showing no writes to store, cache, or
> client cache since then (but yes to slashdot cache). This is true
> across all three key types, even on the nearly empty pubkey stores.

Known bug, fixed in master.

Thanks for suggesting the above, I didn't credit it. (In fact I didn't remember 
who suggested it)
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