From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 14596 invoked by alias); 18 Dec 2008 09:07:06 -0000 Received: (qmail 14589 invoked by uid 22791); 18 Dec 2008 09:07:06 -0000 X-SWARE-Spam-Status: No, hits=1.1 required=5.0 tests=AWL,BAYES_20,J_CHICKENPOX_21,SARE_MSGID_LONG40,SPF_PASS X-Spam-Status: No, hits=1.1 required=5.0 tests=AWL,BAYES_20,J_CHICKENPOX_21,SARE_MSGID_LONG40,SPF_PASS X-Spam-Check-By: sourceware.org Received: from fg-out-1718.google.com (HELO fg-out-1718.google.com) (72.14.220.156) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 18 Dec 2008 09:06:04 +0000 Received: by fg-out-1718.google.com with SMTP id e12so151427fga.0 for ; Thu, 18 Dec 2008 01:06:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:cc:in-reply-to:mime-version:content-type :content-transfer-encoding:content-disposition:references; bh=u4g2xMG4nQAdDl3Xm+OxkZPCFb1pS0RnK/GyLSBf33s=; b=hTTpkFCcOWlj/9tHN/3tXzvmhu2eDC86mfclUO/EcXyVdOIOpm5xPuG6RFrCyyn4Jf NTYvTmNfw6cFiyziCEn9m1AuYePNLvTubWfqx3xqwrvb96SZt/jaGkbB1Sp7fynDxLcU Mj4kw9sjR8ZNFrhQscAmeDkNb6clxcZfLl76w= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=SgcZdVlIlK/oVMwH+yK1bo8SeeQMnuf3QHyVvAfYBtL8oOINfxnDF7rQj07xHuCHXh aGVm19safAk3Zj17ViiSYzUtlE9k1juzr41xHmmIAFOH6cra1ucqSPtnjQV/FxlAXoTu msrdlATmR0BPrC7qR58QKuk/tY4C3tETNKnKM= Received: by 10.86.86.12 with SMTP id j12mr972828fgb.64.1229591161038; Thu, 18 Dec 2008 01:06:01 -0800 (PST) Received: by 10.86.98.19 with HTTP; Thu, 18 Dec 2008 01:06:00 -0800 (PST) Message-ID: <4104961b0812180106n69d1e25ej269d36f39b5426b@mail.gmail.com> Date: Thu, 18 Dec 2008 09:21:00 -0000 From: "jidong xiao" To: "Jun Koi" Subject: Re: Discussion at Linux Foundation Japan Symposium Cc: "Satoshi OSHIMA" , systemtap@sourceware.org, "=?ISO-2022-JP?B?IhskQko/Pj4bKEJAUmVkSGF0Ig==?=" , "=?ISO-2022-JP?B?GyRCNjZLXBsoQks=?=" , "Yumiko SUGITA" In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <494A053D.4030808@hitachi.com> X-IsSubscribed: yes Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2008-q4/txt/msg00589.txt.bz2 On Thu, Dec 18, 2008 at 4:57 PM, Jun Koi wrote: > On Thu, Dec 18, 2008 at 5:09 PM, Satoshi OSHIMA > wrote: >> Hi all, >> >> Long time no see and sorry for my late report. >> >> I attended 9th Linux Foundation Japan Symposium and >> discussed on issues of systemtap project with Ted Ts'o, >> James Bottomley and Jonathan Corbet. >> >> In my understanding, they demand the following things: >> >> (1) Follow upstream first >> >> Utrace and uprobe features are currently available only >> on Fedora and Red Hat Enterprise Linux, since those >> patches are not merged into upstream kernel yet. >> >> my suggestion: >> >> To reduce complaints of upstream kernel developers, >> systemtap project may need to postpone adding new >> uprobe features until getting utrace (and uprobe) >> patch set accepted in mainline. >> >> >> (2) Maintain tapset >> >> Systemtap users (including kernel developers) get >> frustrated because tapsets often do not work on >> the latest kernel. Moreover, sometimes users >> have to fix the tapset incompatibility of kernels. >> >> my suggestion: >> >> If systemtap procjet can fix this kind of incompatibilities >> within a few hours or days as Myths about systemtap >> on the wiki claims, releasing new systemtap minor release >> tarball for each upstream kernel release would help users. >> >> >> (3) Make no debuginfo version >> >> Systemtap always requires kernel debuginfo to use. >> Unfortunately, it is hard for users of some distributions >> to have debuginfo. >> > > How is it possible to do that without kernel debug info? Currently > systemtap extracts lots of information on kernel layout from debug > info, so I dont understand why we can survive without that. > > Thanks, > Jun > But not every distribution contains kernel debuginfo packages, therefore this makes many people not easy to use systemtap. Regards Jason