| From | Doug Anderson <> | Date | Thu, 29 Jul 2021 17:06:59 -0700 | Subject | Re: [PATCH v2 00/24] iommu: Refactor DMA domain strictness |
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Hi,
On Thu, Jul 29, 2021 at 3:33 PM Doug Anderson <dianders@chromium.org> wrote: > > I was definitely getting some inconsistencies in my tests where the > eMMC speeds were getting into a bad state, but I don't believe it's > related to your patch series.
I think this was just me being an idiot. I forgot that I'd been running with KASAN, so that explains why my speeds were so much slower than usual and probably also explains how it could get in a bad state (I guess it also explains why sugov was eating up 30% of my CPU time since that went away too!). No mystery here aside from why it took me this long to realize it.
I'm now getting ~213 MB/s without forcing it to lazy and ~261 MB/s with forcing it to lazy through sysfs (and without any other cpufreq hacks).
-Doug
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