This is the mail archive of the
cygwin
mailing list for the Cygwin project.
Re: X11 forwarding extremely slow (unusable) after Cygwin upgrade (starting from cygwin1.dll version 3.1.0-0.4)
- From: Ken Brown <kbrown at cornell dot edu>
- To: "cygwin at cygwin dot com" <cygwin at cygwin dot com>
- Date: Thu, 2 Jan 2020 22:16:02 +0000
- Subject: Re: X11 forwarding extremely slow (unusable) after Cygwin upgrade (starting from cygwin1.dll version 3.1.0-0.4)
- Arc-authentication-results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=cornell.edu; dmarc=pass action=none header.from=cornell.edu; dkim=pass header.d=cornell.edu; arc=none
- Arc-message-signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=qMsh8KhesAkvzJzcKIc7tMuoILqMzY8D/PgbKVzvt7M=; b=dyV7vzIgn35kWeQuLELwom6wZjtXKv26PwcZs7atva9HbAuTvELfMZiDqHjwozwTvGcLsiddgHvskyd2/64JkIUcZmCtQTjJ0iS0dMgmp2iBEMvKq/GIVmkqhv3at/1Nbj17FQgm9pcnrg3X9v+8ja5G1WD6W5H7uP5RwYfJm0MvH3fQ0QulkHpuOPhRhGZC2xBLX2Bx32+t3YKTyb5SWClrADfJIpGY6rq3PfNq8VF4Zf6XYgLuuIQIMR1UVdkUm6wvHTNj82VLw5OSZ4vgu+ChLgK9RnXkmv1JxRnItA1UDtaPPnet+NMuf+aTdX4gW6q2wu4HvnOi/ekor9IYvQ==
- Arc-seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=H6seHpsAZ/G7jGgBF+JD3+N0RnIiO+JI0J1IofeY+dBkIl7bBafgOJzL8nmRW5gi6scEGv2eHphf6aaO01g1zLIlTKZpPFNhakv70NhuC2vNLh5pMnFAYymaYB4TcF8tlyDhHgQV5Z/9p5KTCs1X15kHOKIL/xKVH8h/MQ2/l+FOhgKjFqedghfoBDdCuA4LUDUEnnP09dG6kKc0tPdop967Pk4GJbUr6dbv4sTfUWFBQXj/BfM9NSwWasZeHvj347ZZadRAcygQGQm9tE4GNFrjLY8WIDNZHx/57wUZuY0RyesYmchMeyuS/2BdmiJK+2KwBfWOuWWJgBsa1gWxXQ==
- References: <013c01d5c1b3$35d44c30$a17ce490$@gmail.com>
[Please don't top-post on this list.]
On 1/2/2020 4:25 PM, ianpul01@gmail.com wrote:
> Now narrowed down to cygwin1.dll version 3.1.0-0.4 as the release which
> introduced this issue.
>
> I found the intervening versions between 3.0.7-1 and 3.1.0-1 as test
> releases in earlier release archives at crouchingtigerhiddenfruitbat.org, so
> incrementally installing those from 3.1.0-0.1, I found that with cygwin1.dll
> version 3.1.0-0.3 X11 forwarding works fine, with 3.1.0-0.4 it is extremely
> slow (unusably slow for CPU-intensive programs).
I think this narrows it down to one of the following commits:
commit b7e429420063264d0be7ee6804f3e6f143f66232
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date: Thu Sep 5 19:44:41 2019 +0900
Cygwin: pty: Fix potential state mismatch regarding pseudo console.
commit 915fcd0ae8d83546ce135131cd25bf6795d97966
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date: Thu Sep 5 13:22:54 2019 +0900
Cygwin: pty: Fix select() with pseudo console support.
commit 433c6b8e0a667f9eae41a52efadec35ac62730df
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date: Thu Sep 5 09:24:26 2019 +0900
Cygwin: pty: Disable clear screen on new pty if TERM=dumb or emacs*.
commit d4045fdbef60d8e7e0d11dfe38b048ea2cb8708b
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date: Wed Sep 4 22:47:42 2019 +0900
Cygwin: pty: Add a workaround for ^C handling.
commit 83b2d576c835dad6b8e2ea53b55a25e7bfcdcde7
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date: Wed Sep 4 22:46:51 2019 +0900
Cygwin: pty: Limit API hook to the program linked with the APIs.
commit 583102e7c9255ae25310154995f855e4f573f81c
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date: Wed Sep 4 10:45:35 2019 +0900
Cygwin: pty: Fix state management for pseudo console support.
commit ffbb9b49711f6a8e3c4f83b226ff9476327dcb61
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date: Wed Sep 4 10:44:25 2019 +0900
Cygwin: pty: Move function hook_api() into hookapi.cc.
commit bddb018e10e90ea300537d5a13999558b7dce476
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date: Wed Sep 4 10:44:24 2019 +0900
Cygwin: pty: Speed up a little hooked Win32 API for pseudo console.
commit 9adb260181fa148fad0e91c55e41ea6d75eb8eb8
Author: Takashi Yano <takashi.yano@nifty.ne.jp>
Date: Wed Sep 4 10:44:23 2019 +0900
Cygwin: pty: Code cleanup
Ken