readzilla (L2arc) tuning - skipping sequential / prefetch blocks
I know we can tune readzilla to cache metadata, all or none.
does readzilla has any setting which will allow the ZFSA to skip caching sequential blocks in readzilla flash. The reason being disks are good at sequential and random reads are what is best to be cached (or atleast provide the customer a parameter to chose if sequential blocks and prefetched blocks are not in L2arc).
Netapp has algorithm which skips seq and pre fetched blocks from caching in read cache(Performance acceleration module as they call it).
This helps a great deal for oltp, and random/read workloads where caching stuff like backups (which are sequential) is wasting valuable cache space which could be used for valuable random ios.
does readzilla has any setting which will allow the ZFSA to skip caching sequential blocks in readzilla flash. The reason being disks are good at sequential and random reads are what is best to be cached (or atleast provide the customer a parameter to chose if sequential blocks and prefetched blocks are not in L2arc).
Netapp has algorithm which skips seq and pre fetched blocks from caching in read cache(Performance acceleration module as they call it).
This helps a great deal for oltp, and random/read workloads where caching stuff like backups (which are sequential) is wasting valuable cache space which could be used for valuable random ios.
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