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Date: | Fri, 31 Jul 2009 08:53:47 +0900 (JST) |
From: | Tatsuro MATSUOKA <tmacchant2 AT yahoo DOT co DOT jp> |
Reply-To: | matsuoka AT nuce DOT nagoya-u DOT ac DOT jp |
Subject: | Re: How cygwin realize posix pipe? |
To: | Haojun Bao <baohaojun AT gmail DOT com>, cygwin AT cygwin DOT com |
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Hello --- Haojun Bao wrote: > > So one of your program is native and the other cygwin. > > It's like a similar issue I met when using native Emacs+Gnus and cygwin > programs (openssl client) to read imap mails, it is very slow. > > I guess it was a pipe size issue, for old DOS compatibility, the pipe > buffer is 64K, and if I check the i/o rate of openssl with Procexp, I > can see something like 64K. > > This is a very wild guess though. First I see sth. in Procexp to be > about 64K, then I googled with "windows pipe 64k". Maybe you can try > tweak the pipe buffer size. > Thank you for your kind advises. Tatsuro -------------------------------------- Power up the Internet with Yahoo! Toolbar. http://pr.mail.yahoo.co.jp/toolbar/ -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
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