toad <toad at ...> writes:
>
> On Sat, Oct 07, 2006 at 05:52:27PM -0400, Ed Tomlinson wrote:
> > On Friday 06 October 2006 19:01, toad wrote:
> > > 1. THE STORE IS *LESS* EFFECTIVE THAN THE CACHE!
> >
> > What is the expected ratio of store to cache hits?
> >
> > Given that nodes seem to cluster (if the old testnet graphs still apply)
> > then this clustering should result in the cache having lots of entries
> > that are close to the node location. This implies that the cache
> > will ofter have the key.
>
> Dumps of my store and cache show that the store is far more specialized
> than the cache. Most DHTs use two-level caches like this, and it was
> reasonable to expect that it would work ... yet far more data is served
> from the cache than the store...
> >
> > If might be interesting to get the average key location and standard
> > deviation of all the keys in the cache and store. If the my thoughs
> > are correct the store should have a average keyvalue near the nodes
> > location with a smaller deviation.
>
> It's a bit specialized but not THAT specialized. The store is very
> specialized. When I get back from America on Tuesday I will write a
> Datastore/datacache histogram generator to put on the stats page...
I think we didnt saw any Long Term Statistics here. My Node runs 2 days for this
statistic:
Its my big node but hasnt excessive connections about 10 normally...
* networkSizeEstimateSession: 589 nodes
* Cached keys: 153,444 (4.68 GiB)
* Stored keys: 6,722 (210 MiB)
* Overall size: 160,166 / 306,888 (4.88 GiB / 9.36 GiB) (52%)
* Cache hits: 40,180 / 304,762 (13%) <<< intersting...
* Store hits: 713 / 264,752 (0%)
* Avg. access rate: 3/s
* locChangeSession: -5.147543E-1
* locChangePerSwap: -5.783756E-3
* locChangePerMinute: -1.821602E-4
* swapsPerMinute: 3.149513E-2
* noSwapsPerMinute: 3.109171E0
* swapsPerNoSwaps: 1.012975E-2
* swaps: 89
* noSwaps: 8786
* startedSwaps: 28243
* swapsRejectedAlreadyLocked: 44083
* swapsRejectedRateLimit: 42
