slow async JdbmCacheStore

[brackxm]

An async JdbmCacheStore is much slower than an async FileCacheStore when doing puts, while i am expecting similar performance.

Is async supported on JdbmCacheStore? It feels like it is synchronous.

using infinispan 4.1.0.FINAL

[mircea.markus]

I would expect the performance to be the same in both cases and close to a cache that doesn't have a cache store.

Do you have eviction enabled? that might increase contingency on the cache store.

[brackxm]

No, no eviction.

The entries have set lifetimes, but no expiration is reached in the test.

Some numbers:

async FileCacheStore: 4s

async JdbmCacheStore: 47s

sync JdbmCacheStore: 60s

[brackxm]

If the jdbm store does not yet exist, it is as fast as the file store.

If it exists, it is 10x slower.

[brackxm]

https://jira.jboss.org/browse/ISPN-723