[ZODB-Dev] ZEO overhead?

[Shane Hathaway]

John Barratt wrote:
> Shane Hathaway wrote:
> 
>> In reality, I think there's little reason why ZEO over a local 
>> connection should be noticeably slower than using FileStorage 
>> directly.  Network communication time should be dwarfed by hard drive 
>> seek time.
> 
> 
> Do you mean that ZEO as it is shouldn't be this slow when loading into 
> the client cache, or just that it should be able to be coded to be 
> almost as fast as FileStorage (eg. using non async code as discussed) 
> and it is hence a known issue?

It's only a hypothesis, but I think the ZEO client code has some 
inherent limitations due to its use of asynchronous communication. 
Fixing it would require a lot of source code changes.

Shane