Re: [PATCH V2] scsi: put hot fields of scsi_host_template into one cacheline

James Bottomley
2020-04-22T14:41:33Z

On Wed, 2020-04-22 at 17:54 +0800, Ming Lei wrote:
> The following three fields of scsi_host_template are referenced in
> scsi IO submission path, so put them together into one cacheline:
>
> - cmd_size
> - queuecommand
> - commit_rqs

Are there benchmarks to show this actually makes a difference, if so,
how much?

James