Re: r311568 makes freerdp very slow

From: Jakob Alvermark <jakob_at_alvermark.net>
Date: Fri, 13 Jan 2017 09:58:01 +0100 (CET)
On Thu, January 12, 2017 19:26, John Baldwin wrote:
> On Thursday, January 12, 2017 12:42:11 PM Shawn Webb wrote:
>
>> On Thu, Jan 12, 2017 at 06:05:08PM +0100, Jakob Alvermark wrote:
>>
>>> Hi,
>>>
>>>
>>> r311568 Set MORETOCOME for AIO write requests on a socket.
>>>
>>> After this commit freerdp is very slow.
>>>
>>>
>>> Before the password prompt would appear immediately when connecting
>>> to a server. Now it takes 5-10 seconds. After entering the password,
>>> another 5-10 seconds until I am connected.
>>> Once connected, there is a considerable lag.
>>>
>>>
>>> What could be the problem?
>>>
>>
>> I don't know what the problem is, but I am seeing the same symptom.
>>
>
> Can you get a ktrace of the freerdp process during this?  The commit
> should only be setting MORETOCOME if multiple aio_write requests are queued
> to the same socket (so that TCP can batch them into a single packet).
> However, it should not affect an application just calling
> aio_write() on a socket once.
>
> --
> John Baldwin

Hi John,

I got the ktrace, what do I do with it?

Thanks,
Jakob
Received on Fri Jan 13 2017 - 08:19:40 UTC

This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:41:09 UTC