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From: Lawrence D'Oliveiro <ldo@nz.invalid>
Newsgroups: comp.arch
Subject: Re: Is Parallel Programming Hard, And, If So, What Can You Do About
 It?
Date: Fri, 23 May 2025 22:19:45 -0000 (UTC)
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On Fri, 23 May 2025 08:28:44 -0700, Stephen Fuld wrote:

> And if you are caching writes, more cache gives you more blocks to
> choose from when optimizing the write back order ...

Fun fact: It seems to be part of the spec that write cache reordering is 
disabled if the driver is using NCQ.

Assuming drives pay attention to that part of the spec, of course.

See the description of the “wcreorder” setting here
<https://manpages.debian.org/smartctl(8)>.