Messages in this thread | | | Date | Wed, 15 Sep 2004 13:40:19 -0700 | From | William Lee Irwin III <> | Subject | Re: [patch] sched: fix scheduling latencies for !PREEMPT kernels |
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On Wed, Sep 15, 2004 at 06:36:24AM -0700, Hans Reiser wrote: > Why bother? It is V3, it should be left undisturbed except for > bugfixes. Please, spend your efforts on reducing V4 latency and > measuring whether it fails to scale to multiple processors. That would > be very useful to me if someone helped with that. V4 has the > architecture for doing such things well, but there are always accidental > bottlenecks that testing can discover, and I am sure we will have a > handful of things preventing us from scaling well that are not hard to > fix. It would be nice to fix those...... > The hard stuff for scalability, the locking of the tree, we did that. > We just haven't tested and evaluated and refined like we need to in V4.
It's not for scalability; it's for cleaning up the users, which are universally buggy. My suggestion above would not, in fact, make reiser3 any more scalable; it would merely isolate the locking semantics it couldn't live without into its own internals.
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