Date: Tue, 17 Jan 2017 13:46:31 +0100 (CET) From: "Jakob Alvermark" <jakob@alvermark.net> To: "Jakob Alvermark" <jakob@alvermark.net> Cc: "John Baldwin" <jhb@freebsd.org>, "Jakob Alvermark" <jakob@alvermark.net>, freebsd-current@freebsd.org, "Shawn Webb" <shawn.webb@hardenedbsd.org> Subject: Re: r311568 makes freerdp very slow Message-ID: <59599.193.12.143.142.1484657191.squirrel@webmail.alvermark.net> In-Reply-To: <64999.85.229.93.187.1484344018.squirrel@webmail.alvermark.net> References: <57236.193.12.143.142.1484240708.squirrel@webmail.alvermark.net> <1610370.k87iRho0oa@ralph.baldwin.cx> <54232.193.12.143.142.1484297881.squirrel@webmail.alvermark.net> <4229440.M2aXL9uEHZ@ralph.baldwin.cx> <64999.85.229.93.187.1484344018.squirrel@webmail.alvermark.net>
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On Fri, January 13, 2017 22:46, Jakob Alvermark wrote: > On Fri, January 13, 2017 19:44, John Baldwin wrote: > >> On Friday, January 13, 2017 09:58:01 AM Jakob Alvermark wrote: >> >> >>> 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? >>> >>> >> >> kdump will generate a text representation, perhaps using 'kdump -s' to >> not include dumps of raw I/O data. If you can put the output of kdump >> at a URL I can fetch from then I can look at it. >> > > OK, here it is: http://filebin.ca/38mkuLau9Yqu/ktrace.out.xfreerdp.txt > > > Thanks, > > > Jakob Hi, Did you get any chance to look at this? Thanks, Jakob
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