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Ut changes group size and indexsize tunable. #890
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Problem: CAS FOM locality index is calculated as a hash of catalogue FID. During performance profiling it has been found that the same locality index is assigned to FOM if the CAS FOPs contain the same FID. For instance, typical S3 client performs operations on a single S3 bucket, which lead to limited set of indecies (meta-index and ordinary index related to S3 bucket). In that case, assigned localities' runq and waitq queues get overloaded, while other localities' queues are not populated by incoming CAS FOPs. It increases CAS FOP processing latency. Solution: Locality index is implemented using incremental static counter. It's updated by +1 value each time cas_fom_home_locality() function is called. Signed-off-by: Maxim Malezhin <maxim.malezhin@seagate.com> Signed-off-by: Nihar <nihar.nayak@seagate.com>
Balloc tunable Framework
nihar1313
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huanghua78,
madhavemuri,
mehjoshi and
nikitadanilov
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