Blake Jones wrote: >> Is this new class usable only by ZFS, or is it potentially usable by >> other kernel tasks as well? It looks to me like it could be used to >> make work done by networking squeues and STREAMS service procedures more >> observable. > > It is potentially usable by other kernel tasks. There is nothing > ZFS-specific about the class right now, although it makes some very mild > assumptions about the characteristics of ZFS' workload (e.g. that it's > processing many fairly small tasks, rather than a few large ones). > These assumptions basically just have performance implications, rather > than correctness ones, and changing them would be fairly straightforward > -- on the order of adding of a new flag to an interface -- but we didn't > do so because there were no other current consumers of such > generalization.
Nifty; thanks! It sounds like it could end up being quite useful. > The "zpool-<poolname>" process is created separately from the scheduling > class. It allows the CPU time from the ZFS task queues (which are now > running under SDC) to be more easily observed. Just curious: is that process created with a non-zero zoneid_t when the pool is inside a zone? -- James Carlson 42.703N 71.076W <carlsonj at workingcode.com>
