From owner-freebsd-questions@freebsd.org Sat Apr 3 07:53:42 2021 Return-Path: Delivered-To: freebsd-questions@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 966D15C30C5 for ; Sat, 3 Apr 2021 07:53:42 +0000 (UTC) (envelope-from ml@netfence.it) Received: from soth.netfence.it (mailserver.netfence.it [78.134.96.152]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "mailserver.netfence.it", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4FC8LY0xZCz3MLs; Sat, 3 Apr 2021 07:53:40 +0000 (UTC) (envelope-from ml@netfence.it) Received: from alamar.ventu (alamar.local.netfence.it [10.1.2.18]) (authenticated bits=0) by soth.netfence.it (8.16.1/8.16.1) with ESMTPSA id 1337rc7p089649 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NO); Sat, 3 Apr 2021 09:53:38 +0200 (CEST) (envelope-from ml@netfence.it) X-Authentication-Warning: soth.netfence.it: Host alamar.local.netfence.it [10.1.2.18] claimed to be alamar.ventu Subject: Re: devel/google-perftools in a jail To: yuri@FreeBSD.org Cc: freebsd-questions@FreeBSD.org References: <18dcbb14-d208-071e-8f93-39dd45d7dc14@rawbw.com> <2cfa2de6-3d22-bc88-90d2-49e94d1a8f0d@netfence.it> <85f65024-2c3e-b83e-da5a-21d522a92bc6@rawbw.com> From: Andrea Venturoli Message-ID: <2fde0431-a9b2-ac42-c34b-8b2f312ddb85@netfence.it> Date: Sat, 3 Apr 2021 09:53:38 +0200 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:78.0) Gecko/20100101 Thunderbird/78.9.0 MIME-Version: 1.0 In-Reply-To: <85f65024-2c3e-b83e-da5a-21d522a92bc6@rawbw.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4FC8LY0xZCz3MLs X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=pass (policy=none) header.from=netfence.it; spf=pass (mx1.freebsd.org: domain of ml@netfence.it designates 78.134.96.152 as permitted sender) smtp.mailfrom=ml@netfence.it X-Spamd-Result: default: False [-3.80 / 15.00]; RCVD_TLS_ALL(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; RBL_DBL_DONT_QUERY_IPS(0.00)[78.134.96.152:from]; TO_MATCH_ENVRCPT_ALL(0.00)[]; R_SPF_ALLOW(-0.20)[+ip4:78.134.96.152]; MIME_GOOD(-0.10)[text/plain]; TO_DN_NONE(0.00)[]; HAS_XAW(0.00)[]; SPAMHAUS_ZRD(0.00)[78.134.96.152:from:127.0.2.255]; ARC_NA(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[netfence.it,none]; NEURAL_HAM_SHORT(-1.00)[-0.999]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:35612, ipnet:78.134.0.0/17, country:IT]; RCVD_COUNT_TWO(0.00)[2]; MAILMAN_DEST(0.00)[freebsd-questions] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 03 Apr 2021 07:53:42 -0000 On 4/2/21 9:13 PM, yuri@FreeBSD.org wrote: > On 4/2/21 4:56 AM, Andrea Venturoli wrote: >>> Is the string '/usr/jails/' present in prof.out? >> >> Yes. > > > Was the profiling session run on the same system/in the same jail? Yes. All is happening *inside* the jail > Did these files exist right after the profiling session? No (again, not in the jail POV). I think perftools-pprof queries for a given library and, instead of the path in the jail's filesystem space, somehow gets the same file but in the host's filesystem space. I don't know how it tries to get these, though. > Profiling session and display session should run on exactly same > system/same jail. That's what I'm doing. > Besides, even when run in jail, jail paths aren't visible to regular > executables because jail runs in chroot environment. s/aren't visible/shouldn't be visible/ !!! > This error should be impossible - something really weird occurred. Never mind; I've moved to another tool meanwhile. If you want me to open a bug report for the record, just ask. bye & Thanks av.