The folks at EVE have posted a dev blog detailing the virtues of their StacklessIO technology which improves performance and reduces latency in high population situations.

For the past two years we have been developing new technology, called StacklessIO, to increase the performance of our network communication infrastructure in EVE. This new network layer reduces network latency and improves performance in high-volume situations, e.g., in fleet-fights and market hubs such as Jita.

On 16 September we successfully deployed StacklessIO to Tranquility. We noticed an astounding, yet expected, measurable difference.

Normally Jita reaches a maximum of about 800-900 pilots on Sundays. On the Friday following the deployment of StacklessIO there were close to 1,000 concurrent pilots in Jita and on Saturday the maximum number reached 1,400. This is more than have ever been in Jita at the same time. Jita could become rather unresponsive at 800-900 pilots but on Sunday it was quite playable and very responsive with 800 pilots. It should continue to be snappier and more responsive in the future.

Read more here.

Pretty cool stuff, even though I'm not playing at the moment.  Having spent enough time locked up in Jita or in am-i-dead-or-still-alive limbo during a large fleet battle, I can really appreciate this.

BTW, blogs like this are one of the really cool things about CCP and EvE...other games tell you "we fixed this, and this, and this, and...".  CCP tells you "This is what the problem looked like, this is what caused it, this is what we did to fix it, this is how the fix works, here's some data on how the fix is perfoming, here's what we plan on doing with it next...", and they're not afraid of getting technical with their customers.

Hopefully they'll release some more detailed information on the specifics of StacklessIO in the near future.

Step in the right Direction Jita has improved alot and so have other systems and mid scale fleet battles, haven't been in anything large than 50 people since the update so cant comment. When they sort out the memory problem and Iron out the StacklessIO we should see even better performance. Just to make it clear eve online only has 1 server with no player cap (something like 40k online per night!) so something like this is needed if you think your Lineage 2 castle sieges or wow raids got laggy try a 100vs100 man fleet in eve on a server with over 40k people online lol.

made a huge improvement at all levels of pvp, still not perfect, but this is like the best anti-lag development they have done in ages.