Paul Eggert <eggert@HIDDEN>
to control <at> debbugs.gnu.org.
Full text available.Received: (at 54194) by debbugs.gnu.org; 28 Feb 2022 17:38:21 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Mon Feb 28 12:38:21 2022 Received: from localhost ([127.0.0.1]:34690 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1nOjyX-0006Fj-KA for submit <at> debbugs.gnu.org; Mon, 28 Feb 2022 12:38:21 -0500 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:33512) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eggert@HIDDEN>) id 1nOjyW-0006FV-5t for 54194 <at> debbugs.gnu.org; Mon, 28 Feb 2022 12:38:21 -0500 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id E3F05160171; Mon, 28 Feb 2022 09:38:13 -0800 (PST) Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id 8W_6fgZfbaRQ; Mon, 28 Feb 2022 09:38:13 -0800 (PST) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 2AC6C16017E; Mon, 28 Feb 2022 09:38:12 -0800 (PST) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id Z8vP7ojeI1Ie; Mon, 28 Feb 2022 09:38:12 -0800 (PST) Received: from [192.168.1.9] (cpe-172-91-119-151.socal.res.rr.com [172.91.119.151]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id AFA08160174; Mon, 28 Feb 2022 09:38:11 -0800 (PST) Message-ID: <e976e327-88d8-b4ac-b593-7e1d1f9d7f33@HIDDEN> Date: Mon, 28 Feb 2022 09:38:11 -0800 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.5.0 Subject: Re: bug#54194: Memory Leak on Fedora Machine Content-Language: en-US To: Mahyar Mirrashed <mirrashm@HIDDEN> References: <CAKpDRSUu+nfNQUGNgMwxFQB2Uuqp=7akar5bcXosR3JR_YOVjA@HIDDEN> From: Paul Eggert <eggert@HIDDEN> Organization: UCLA Computer Science Department In-Reply-To: <CAKpDRSUu+nfNQUGNgMwxFQB2Uuqp=7akar5bcXosR3JR_YOVjA@HIDDEN> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 54194 Cc: 54194 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) On 2/27/22 21:34, Mahyar Mirrashed wrote: > I accidentally profiled > `grep` and noticed that there was over 110KB of memory leakage. There's a good possibility that it's not a true memory leakage. grep doesn't bother freeing storage just before it exits, merely to pacify memory checkers, as it's faster to simply exit. To find out for sure you'll need to investigate further.
bug-grep@HIDDEN:bug#54194; Package grep.
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charset="UTF-8" Hi there, I was implementing a simplistic shell script parser for fun in C. When profiling with valgrind with --trace-children=yes, I accidentally profiled `grep` and noticed that there was over 110KB of memory leakage. I am running grep v3.6 which is the most recent according to `dnf` on Fedora Linux 35 (KDE Plasma) x86_64 with kernel 5.16.9-200 Thinking that it was because of whatever came with Fedora, I tried compiling from source but the same memory leakage persisted. The line that I was profiling was cat /proc/self/status | grep nonvol > nonvoluntaryswitches.txt Regards, Mahyar --000000000000d0836c05d90d676d Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <meta http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dutf-8"><d= iv dir=3D"ltr"><div>Hi there,</div><div><br></div><div>I was implementing a= simplistic shell script parser for fun in C. When profiling with valgrind = with --trace-children=3Dyes, I accidentally profiled `grep` and noticed tha= t there was over 110KB of memory leakage.</div><div><br></div><div>I am run= ning grep v3.6 which is the most recent according to `dnf` on Fedora Linux = 35 (KDE Plasma) x86_64 with kernel 5.16.9-200<br></div><div><br></div><div>= Thinking that it was because of whatever came with Fedora, I tried compilin= g from source but the same memory leakage persisted.</div><div><br></div><d= iv>The line that I was profiling was <br><div style=3D"color:rgb(247,241,25= 5);background-color:rgb(34,34,34);font-family:FiraCode NF,Consolas,"Co= urier New",monospace,"Droid Sans Mono","monospace"= ,monospace;font-weight:normal;font-size:14px;line-height:19px;white-space:p= re"><div><span style=3D"color:rgb(247,241,255)">cat /proc/self/status </spa= n><span style=3D"color:rgb(252,97,141)">|</span><span style=3D"color:rgb(24= 7,241,255)"> grep nonvol </span><span style=3D"color:rgb(252,97,141)">><= /span><span style=3D"color:rgb(247,241,255)"> nonvoluntaryswitches.txt</spa= n></div></div></div><div><br></div><div>Regards,</div><div>Mahyar<br></div>= </div> --000000000000d0836c05d90d676d--
Mahyar Mirrashed <mirrashm@HIDDEN>:bug-grep@HIDDEN.
Full text available.bug-grep@HIDDEN:bug#54194; Package grep.
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