On 06/06/10 18:58, Brad Diggs wrote: > Apps that attempt to acquire a large amount of data on startup can fail > to start properly if ZFS does not free > up the memory fast enough. I have observed this with Directory Server.
"Fast enough?" The model I was expecting here was a bit more synchronous than that -- someone asks for memory, the memory subsystem asks ZFS to release some, and it does, which allows the request to be satisfied. I'd be interesting to know how time gets involved here at all. If it does, then I think that would make the "ZFS ARC should use all of memory by default" scheme fairly problematic, as it would just intermittently shoot down large processes. Or just more fundamentally: needing to tune this at all seems a bit like a bug to me. -- James Carlson 42.703N 71.076W <carls...@workingcode.com> _______________________________________________ zones-discuss mailing list email@example.com