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)) (No client certificate requested) by lists.proxmox.com (Postfix) with UTF8SMTPS id B505E69E4E for ; Wed, 24 Mar 2021 08:43:38 +0100 (CET) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with UTF8SMTP id A495335ACB for ; Wed, 24 Mar 2021 08:43:08 +0100 (CET) Received: from proxmox-new.maurer-it.com (proxmox-new.maurer-it.com [212.186.127.180]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by firstgate.proxmox.com (Proxmox) with UTF8SMTPS id 811B735ABE for ; Wed, 24 Mar 2021 08:43:07 +0100 (CET) Received: from proxmox-new.maurer-it.com (localhost.localdomain [127.0.0.1]) by proxmox-new.maurer-it.com (Proxmox) with UTF8SMTP id 3432E44776; Wed, 24 Mar 2021 08:43:07 +0100 (CET) Message-ID: <8e0fc4aa-c1c2-7815-c637-8d28b4b3b212@proxmox.com> Date: Wed, 24 Mar 2021 08:43:06 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:87.0) Gecko/20100101 Thunderbird/87.0 Content-Language: en-US To: Dietmar Maurer , Proxmox Backup Server development discussion , Wolfgang Bumiller , Stefan Reiter References: <135688083.868.1616570239599@webmail.proxmox.com> From: Dominik Csapak In-Reply-To: <135688083.868.1616570239599@webmail.proxmox.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-SPAM-LEVEL: Spam detection results: 0 AWL 0.180 Adjusted score from AWL reputation of From: address KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment NICE_REPLY_A -0.001 Looks like a legit reply (A) RCVD_IN_DNSWL_MED -2.3 Sender listed at https://www.dnswl.org/, medium trust SPF_HELO_NONE 0.001 SPF: HELO does not publish an SPF Record SPF_PASS -0.001 SPF: sender matches SPF record URIBL_BLOCKED 0.001 ADMINISTRATOR NOTICE: The query to URIBL was blocked. See http://wiki.apache.org/spamassassin/DnsBlocklists#dnsbl-block for more information. [proxmox.com] Subject: Re: [pbs-devel] [PATCH proxmox-backup] fix #3359: fix blocking writes in async code during pxar create 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: Wed, 24 Mar 2021 07:43:38 -0000 On 3/24/21 08:17, Dietmar Maurer wrote: >> Fixes: 6afb60abf557 ("asyncify pxar create_archive") > > I am not sure, but maybe 6afb60abf557 is also the cause for > the performance regression? > > (reported at https://bugzilla.proxmox.com/show_bug.cgi?id=3174) > i mean not the perfect benchmark, but here on a relatively empty vm (~2GB root disk) with 4 cores + 4GiB Memory there is no measurable difference between before that commit and after (a backup of / takes ~15s in both cases)