From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from alt-proxy28.mail.unifiedlayer.com (alt-proxy28.mail.unifiedlayer.com [74.220.216.123]) by sourceware.org (Postfix) with ESMTPS id 0FCD93858D20 for ; Thu, 29 Dec 2022 18:17:46 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 0FCD93858D20 Authentication-Results: sourceware.org; dmarc=none (p=none dis=none) header.from=tromey.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=tromey.com Received: from cmgw10.mail.unifiedlayer.com (unknown [10.0.90.125]) by progateway1.mail.pro1.eigbox.com (Postfix) with ESMTP id 5EACD1003F8D3 for ; Thu, 29 Dec 2022 18:17:33 +0000 (UTC) Received: from box5379.bluehost.com ([162.241.216.53]) by cmsmtp with ESMTP id AxTBpgxnRCmv8AxTBpDzL3; Thu, 29 Dec 2022 18:17:33 +0000 X-Authority-Reason: nr=8 X-Authority-Analysis: v=2.4 cv=OtqKdwzt c=1 sm=1 tr=0 ts=63add9bd a=ApxJNpeYhEAb1aAlGBBbmA==:117 a=ApxJNpeYhEAb1aAlGBBbmA==:17 a=dLZJa+xiwSxG16/P+YVxDGlgEgI=:19 a=sHyYjHe8cH0A:10:nop_rcvd_month_year a=Qbun_eYptAEA:10:endurance_base64_authed_username_1 a=mDV3o1hIAAAA:8 a=VHRmM9-vjxLejLUcoO8A:9 a=_FVE-zBwftR9WsbkzFJk:22 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=tromey.com; s=default; h=Content-Type:MIME-Version:Message-ID:In-Reply-To:Date:References :Subject:Cc:To:From:Sender:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=ZsNm/ByXGa0rikRx+489X6nqh7lyDoLSljMF7jBugtI=; b=nKADhSoEqho6YhDEWcJPJqOm2t y85IaC1w5Dz6aiVo2oLX9CA5ouGcPJbjHacZULRYSyC2MdmAZpUWfmrxygfZRfs1odIwAYkO3lbp3 HUbjj7JVvUh5nJ2bgFYk0tjNK; Received: from [161.98.8.3] (port=43288 helo=prentzel) by box5379.bluehost.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1pAxTA-000d33-UA; Thu, 29 Dec 2022 11:17:32 -0700 From: Tom Tromey To: Eli Zaretskii Cc: Tom Tromey , gdb-patches@sourceware.org, luis.machado@arm.com Subject: Re: Two observations using GDB 13 snapshot References: <83h6xugc5v.fsf@gnu.org> <58b64bf8-90b6-d080-c060-d03761501199@arm.com> <83k02neezy.fsf@gnu.org> <835ye7e9jw.fsf@gnu.org> <87h6xrks77.fsf@tromey.com> <83mt7idacj.fsf@gnu.org> <87fsd4elb2.fsf@tromey.com> <83o7rs4qmg.fsf@gnu.org> <87cz84dasj.fsf@tromey.com> <835ydw20bw.fsf@gnu.org> <87wn6bbi5m.fsf@tromey.com> <83sfgz8m9i.fsf@gnu.org> <87o7rnb0ya.fsf@tromey.com> <83a6368chf.fsf@gnu.org> X-Attribution: Tom Date: Thu, 29 Dec 2022 11:17:27 -0700 In-Reply-To: <83a6368chf.fsf@gnu.org> (Eli Zaretskii's message of "Thu, 29 Dec 2022 17:18:36 +0200") Message-ID: <87k02aaxc8.fsf@tromey.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - box5379.bluehost.com X-AntiAbuse: Original Domain - sourceware.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - tromey.com X-BWhitelist: no X-Source-IP: 161.98.8.3 X-Source-L: No X-Exim-ID: 1pAxTA-000d33-UA X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: (prentzel) [161.98.8.3]:43288 X-Source-Auth: tom+tromey.com X-Email-Count: 2 X-Source-Cap: ZWx5bnJvYmk7ZWx5bnJvYmk7Ym94NTM3OS5ibHVlaG9zdC5jb20= X-Local-Domain: yes X-Spam-Status: No, score=-3021.8 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,JMQ_SPF_NEUTRAL,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS,TXREP autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: >>>>> "Eli" == Eli Zaretskii writes: Eli> The profile produced by gprof is attached. The time information looks Eli> very inaccurate, almost bogus, to me (since GDB ran for more than 2 Eli> minutes, I expected to see gdb_main show 130 as the value of Eli> cumulative seconds, but the profile shows only 2.21?). Yeah, it looks strange to me as well. I don't think it really shows us where all the time is going. gprof also thinks gdb only ran for a couple of seconds: > granularity: each sample hit covers 4 byte(s) for 0.44% of 2.29 seconds I wonder if just randomly interrupting gdb a few times during that 2 minutes and doing a "bt" would be more informative. Tom