From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.proxmox.com (Postfix) with ESMTPS id 121B4DF6A for ; Tue, 6 Dec 2022 15:44:41 +0100 (CET) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id E967B2F6AD for ; Tue, 6 Dec 2022 15:44:10 +0100 (CET) Received: from proxmox-new.maurer-it.com (proxmox-new.maurer-it.com [94.136.29.106]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by firstgate.proxmox.com (Proxmox) with ESMTPS for ; Tue, 6 Dec 2022 15:44:08 +0100 (CET) Received: from proxmox-new.maurer-it.com (localhost.localdomain [127.0.0.1]) by proxmox-new.maurer-it.com (Proxmox) with ESMTP id 8D97943D36 for ; Tue, 6 Dec 2022 15:44:08 +0100 (CET) Message-ID: <41086f37-8fea-8cda-ae90-1c152ef4b047@proxmox.com> Date: Tue, 6 Dec 2022 15:44:07 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.5.0 Content-Language: en-US To: Wolfgang Bumiller Cc: pbs-devel@lists.proxmox.com References: <20221205145514.645111-1-l.wagner@proxmox.com> <20221205145514.645111-3-l.wagner@proxmox.com> <20221206113941.ozvlonsqil34impj@casey.proxmox.com> From: Lukas Wagner In-Reply-To: <20221206113941.ozvlonsqil34impj@casey.proxmox.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-SPAM-LEVEL: Spam detection results: 0 AWL 0.247 Adjusted score from AWL reputation of From: address BAYES_00 -1.9 Bayes spam probability is 0 to 1% KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment NICE_REPLY_A -0.27 Looks like a legit reply (A) SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record Subject: Re: [pbs-devel] [PATCH v2 proxmox-backup 2/3] debug cli: add 'compare-content' flag to `diff archive` command X-BeenThere: pbs-devel@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox Backup Server development discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Dec 2022 14:44:41 -0000 Hi, On 12/6/22 12:39, Wolfgang Bumiller wrote: >> +{ >> + let mut buf_a = vec![0u8; BUFFERSIZE]; >> + let mut buf_b = vec![0u8; BUFFERSIZE]; > > Maybe use a Box instead of a Vec, we don't ever resize this atm. > Do you mean like this? let mut buf_a = Box::new([0u8; BUFFERSIZE]); AFAIU this would construct the array on the stack first before it is moved into the Box, leading to some unnecessary memcpys. Or am I missing something here?