Major SMP problems with lstat/namei

[Ivan Voras]

Ivan Voras wrote:

> There is nothing that can be done within the 6.x branch. 7.x contains
> many improvements but I think only 8.x will directly change the lockmgr
> and the namei cache. The best things you can try right now is to use
> 7-STABLE (or soon to be released 7.1; you might need tuning with
> 7.0-RELEASE) or try 8-CURRENT (it's quite stable).

I remembered two more things:

* The problematic load can also be generated with benchmarks/blogbench
* I don't have the numbers here but I think I remember that ZFS had
noticably larger score than UFS in this workload. Of course, ZFS has
other problems.


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