From owner-freebsd-current@freebsd.org Fri Jan 13 22:15:15 2017 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3ED32CAE6D2 for ; Fri, 13 Jan 2017 22:15:15 +0000 (UTC) (envelope-from jakob@alvermark.net) Received: from smtprelay-b11.telenor.se (smtprelay-b11.telenor.se [62.127.194.20]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id E3DD2146E; Fri, 13 Jan 2017 22:15:13 +0000 (UTC) (envelope-from jakob@alvermark.net) Received: from ipb1.telenor.se (ipb1.telenor.se [195.54.127.164]) by smtprelay-b11.telenor.se (Postfix) with ESMTP id 6D87BC582; Fri, 13 Jan 2017 22:47:01 +0100 (CET) X-SENDER-IP: [85.229.94.62] X-LISTENER: [smtp.bredband.net] X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: A2CtCQD6SXlYED5e5VVdGgEBAQECAQEBAQgBAQEBgzkBAQEBAR9AH4EJB4NKinmRIw6XKCqFeAKCFkQUAQIBAQEBAQEBBgEBAQEBAQEBOEWEagEFIw8BIyMQCw4KAgIUEgICOQoUBokaAQmweoIlFYl2AQEBAQEFAQEBASSBC4obhDBkgjiCXgWbMgGBfoRdjUWOJZEzAYExNiCBUAqGaz01AQGIZAEBAQ X-IPAS-Result: A2CtCQD6SXlYED5e5VVdGgEBAQECAQEBAQgBAQEBgzkBAQEBAR9AH4EJB4NKinmRIw6XKCqFeAKCFkQUAQIBAQEBAQEBBgEBAQEBAQEBOEWEagEFIw8BIyMQCw4KAgIUEgICOQoUBokaAQmweoIlFYl2AQEBAQEFAQEBASSBC4obhDBkgjiCXgWbMgGBfoRdjUWOJZEzAYExNiCBUAqGaz01AQGIZAEBAQ X-IronPort-AV: E=Sophos;i="5.33,223,1477954800"; d="scan'208";a="1076400549" Received: from c-3e5ee555.06-11-73746f31.cust.bredbandsbolaget.se (HELO sigyn.alvermark.net) ([85.229.94.62]) by ipb1.telenor.se with ESMTP; 13 Jan 2017 22:47:01 +0100 Received: from localhost ([127.0.0.1] helo=webmail.alvermark.net) by sigyn.alvermark.net with esmtp (Exim 4.80.1 (FreeBSD)) (envelope-from ) id 1cS9gY-0001YY-2n; Fri, 13 Jan 2017 22:46:58 +0100 Received: from 85.229.93.187 (SquirrelMail authenticated user alvis) by webmail.alvermark.net with HTTP; Fri, 13 Jan 2017 22:46:58 +0100 (CET) Message-ID: <64999.85.229.93.187.1484344018.squirrel@webmail.alvermark.net> In-Reply-To: <4229440.M2aXL9uEHZ@ralph.baldwin.cx> 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> Date: Fri, 13 Jan 2017 22:46:58 +0100 (CET) Subject: Re: r311568 makes freerdp very slow From: "Jakob Alvermark" To: "John Baldwin" Cc: "Jakob Alvermark" , freebsd-current@freebsd.org, "Shawn Webb" User-Agent: SquirrelMail/1.5.1 MIME-Version: 1.0 Content-Type: text/plain;charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 13 Jan 2017 22:15:15 -0000 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