Re: Poor USB performance on ASUS 520 motherboard (no IRQ?)

Reply: Daniel O'Connor via freebsd-usb : "Re: Poor USB performance on ASUS 520 motherboard (no IRQ?)"
In reply to: Daniel O'Connor: "Poor USB performance on ASUS 520 motherboard (no IRQ?)"
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From: Hans Petter Selasky <hps_at_selasky.org>
Date: Fri, 03 Dec 2021 18:41:19 UTC

On 11/24/21 23:33, Daniel O'Connor wrote:
> I found that the Gigabyte GA-A320M-H one works fine but the ASUS A520M-A/CSM one is significantly slower for tests where there are many back and forth messages (streaming data seems fine).

Hi,

There is a register in the XHCI PCI area, to set the IRQ latency. You 
may want to check the PCI IDs towards Linux if these chips require some 
kind of special quirks.

--HPS