On Thu, 7 Jun 2007, Hans Boehm wrote: > written data (e.g. for checkpoints or GC), and a small number of writes > are distributed randomly through the address space (admittedly worst > case) then 4 times as many bytes appear to be potentially written, > and hence you may have to copy or scan 4 times as many bytes. > I think the potential down side in cases like this is substantial, > though it's probably quite rare. Fpr software DSM it's probably even > worse, since you are likely to introduce more false sharing. On the other hand the transfer size and the locking becomes less. The false sharing can be controlled by setting INTERNODE_CACHE_SHIFT appropriately. - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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