From: Oliver Neukum <oneukum@suse.com>
To: Hiago De Franco <hiagofranco@gmail.com>, oneukum@suse.com
Cc: davem@davemloft.net, edumazet@google.com,
hiago.franco@toradex.com, kuba@kernel.org,
linux-usb@vger.kernel.org, pabeni@redhat.com
Subject: Re: Question regarding CDC NCM and VNC performance issue
Date: Tue, 5 Dec 2023 13:38:06 +0100 [thread overview]
Message-ID: <a13fc273-20ee-4027-9508-7e8e93a9cd29@suse.com> (raw)
In-Reply-To: <20231205122204.10556-1-hiagofranco@gmail.com>
On 05.12.23 13:22, Hiago De Franco wrote:
Hi,
> During the ping, nothing changes, VNC continues to be extremely slow.
I was wondering whether you ping itself has bad delays.
> I switched from NCM to ECM for testing purposes. On ECM, everything works
> seamlessly without any issues. It appears that the problem may be specific
> to the combination of NCM and the Linux host machine, as the setup works
> fine on Windows.
>
> I'm curious if there are issues with NCM and small USB packet lengths.
> The VNC application tends to send numerous small packets (1514 bytes).
1514 is a standard ethernet packet. What is wNtbOutMaxDatagrams on your
device?
Regards
Oliver
next prev parent reply other threads:[~2023-12-05 12:38 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-04 18:37 Question regarding CDC NCM and VNC performance issue Hiago De Franco
2023-12-05 9:50 ` Oliver Neukum
2023-12-05 12:22 ` Hiago De Franco
2023-12-05 12:38 ` Oliver Neukum [this message]
2023-12-05 12:55 ` Hiago De Franco
2023-12-05 20:14 ` Hiago De Franco
2023-12-06 12:21 ` Oliver Neukum
2023-12-06 16:23 ` Hiago De Franco
2023-12-07 9:41 ` Oliver Neukum
2023-12-07 10:03 ` Francesco Dolcini
2023-12-07 11:07 ` Oliver Neukum
2023-12-07 11:38 ` Maciej Żenczykowski
2023-12-07 18:57 ` Hiago De Franco
2023-12-07 19:37 ` Maciej Żenczykowski
2023-12-11 20:28 ` Hiago De Franco
2023-12-11 20:44 ` Maciej Żenczykowski
2023-12-12 9:48 ` Oliver Neukum
2023-12-12 20:32 ` Hiago De Franco
2023-12-12 21:21 ` Oliver Neukum
2023-12-13 1:11 ` Maciej Żenczykowski
2023-12-15 21:20 ` Hiago De Franco
2023-12-15 21:44 ` Maciej Żenczykowski
2023-12-18 14:34 ` Oliver Neukum
2023-12-18 20:59 ` Hiago De Franco
2023-12-18 23:00 ` Maciej Żenczykowski
2023-12-19 8:45 ` Oliver Neukum
2023-12-19 12:19 ` Maciej Żenczykowski
2023-12-19 13:24 ` Oliver Neukum
2023-12-19 16:25 ` Maciej Żenczykowski
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