Re: [linus:master] [readahead] ab4443fe3c: vm-scalability.throughput -21.4% regression

[Yin Fengwei]

On 3/4/24 13:35, Yin, Fengwei wrote:
> Even the file read throughput is almost same. But the distribution of
> order looks like a regression with ab4443fe3ca6 (more smaller order
> page cache is generated than parent commit). Thanks.
There may be confusion here. Let me clarify it as:
I shouldn't say folio order distribution is a regression. It's smaller
folio order cause more folios added in page cache for same workload. And
raise the lru lock contention which trigger the regression.


Regards
Yin, Fengwei