From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 17027 invoked by alias); 23 Apr 2004 18:21:45 -0000 Mailing-List: contact libc-hacker-help@sources.redhat.com; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-hacker-owner@sources.redhat.com Received: (qmail 17009 invoked from network); 23 Apr 2004 18:21:45 -0000 Received: from unknown (HELO e35.co.us.ibm.com) (32.97.110.133) by sources.redhat.com with SMTP; 23 Apr 2004 18:21:45 -0000 Received: from westrelay04.boulder.ibm.com (westrelay04.boulder.ibm.com [9.17.193.32]) by e35.co.us.ibm.com (8.12.10/8.12.2) with ESMTP id i3NILi1T543016 for ; Fri, 23 Apr 2004 14:21:44 -0400 Received: from d03nm691.boulder.ibm.com (d03av04.boulder.ibm.com [9.17.195.170]) by westrelay04.boulder.ibm.com (8.12.10/NCO/VER6.6) with ESMTP id i3NILhP3206304 for ; Fri, 23 Apr 2004 12:21:43 -0600 In-Reply-To: <20040423145724.GM5191@sunsite.ms.mff.cuni.cz> Reply-To: bmark@us.ibm.com To: Glibc hackers MIME-Version: 1.0 Subject: Re: AIO work in librt From: Mark Brown Message-ID: Date: Fri, 23 Apr 2004 18:21:00 -0000 Content-Type: text/plain; charset="US-ASCII" X-SW-Source: 2004-04/txt/msg00089.txt.bz2 Jakub Jelinekl writes (as did Ulrich in another note): > RHEL glibc already includes the rtkaio glibc add-on which is librt using > the kernel AIO interface. We were looking for something that could go into the main tree, but given the status below... > Unfortunately, the kernel side is very limited and doesn't have good > support for the things userland POSIX AIO needs (e.g. in the area of > notification and cancellation, or that many things are serialized in > the kernel rather than truely asynchronous; and from what I've heard > the 2.6 aio is even in worse shape than what we used to have in 2.4.x RHEL > kernels). Not being an aio expert myself, I didn't know things were in this shape. I'll pass your opinions here to the team that's proposing the work. ------------------- Mark S. Brown bmark@us.ibm.com