Date: Thu, 12 Jan 2017 10:26:07 -0800 From: John Baldwin <jhb@freebsd.org> To: freebsd-current@freebsd.org Cc: Shawn Webb <shawn.webb@hardenedbsd.org>, Jakob Alvermark <jakob@alvermark.net> Subject: Re: r311568 makes freerdp very slow Message-ID: <1610370.k87iRho0oa@ralph.baldwin.cx> In-Reply-To: <20170112174211.5nmvpjatg6zap35a@mutt-hardenedbsd> References: <57236.193.12.143.142.1484240708.squirrel@webmail.alvermark.net> <20170112174211.5nmvpjatg6zap35a@mutt-hardenedbsd>
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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
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