From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 4F2EBCCD185 for ; Fri, 10 Oct 2025 17:45:22 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1v7H9a-000421-Vn; Fri, 10 Oct 2025 13:43:46 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1v7H9T-0003qu-2L for qemu-devel@nongnu.org; Fri, 10 Oct 2025 13:43:36 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1v7H9M-0007mH-3T for qemu-devel@nongnu.org; Fri, 10 Oct 2025 13:43:34 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1760118204; h=from:from:reply-to:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=/18YaFIQVuCbEF7pBmW9yAM6E4nzTXdGihiMT21Ls/U=; b=cSs7nQpvLMH79A/Er3nJqJ4UJ1jmhbetDd74KjPFNenAEuHMDLI5A8ZwBSIRu7SA8A/fIe cynBzgXFHRgoVGFyM1R0urbEPEk3muTc91K8IOU6cPMkpBcKf7wFrhInRzyadVoVMlpw59 paO7DLI0Vxco0FfZLO4jzTzuAoh3Bq8= Received: from mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-79-uXcaowtXNsWqR4MkOckgNQ-1; Fri, 10 Oct 2025 13:43:20 -0400 X-MC-Unique: uXcaowtXNsWqR4MkOckgNQ-1 X-Mimecast-MFC-AGG-ID: uXcaowtXNsWqR4MkOckgNQ_1760118198 Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17]) (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 mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id A46831800366; Fri, 10 Oct 2025 17:43:18 +0000 (UTC) Received: from redhat.com (unknown [10.42.28.177]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 066401955F22; Fri, 10 Oct 2025 17:43:15 +0000 (UTC) Date: Fri, 10 Oct 2025 18:43:12 +0100 From: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= To: Peter Maydell Cc: qemu-devel@nongnu.org, Yonggang Luo , Michael Tokarev , Thomas Huth , Alex =?utf-8?Q?Benn=C3=A9e?= , Philippe =?utf-8?Q?Mathieu-Daud=C3=A9?= Subject: Re: [PATCH] gitlab: purge msys pacman cache Message-ID: References: <20251010160545.144760-1-berrange@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/2.2.14 (2025-02-20) X-Scanned-By: MIMEDefang 3.0 on 10.30.177.17 Received-SPF: pass client-ip=170.10.129.124; envelope-from=berrange@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: Daniel =?utf-8?B?UC4gQmVycmFuZ8Op?= Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On Fri, Oct 10, 2025 at 06:23:22PM +0100, Peter Maydell wrote: > On Fri, 10 Oct 2025 at 17:05, Daniel P. Berrangé wrote: > > > > For the Windows msys2 CI job we install many packages using pacman > > and use the GitLab cache to preserve the pacman cache across CI > > runs. While metadata still needs downloading, this avoids pacman > > re-downloading packages from msys2 if they have not changed. > > > > The problem is that pacman never automatically purges anything > > from its package cache. Thus the GitLab cache is growing without > > bound and packing/unpacking the cache is consuming an increasing > > amount of time in the CI job. > > > > If we run 'pacman -Sc' /after/ installing our desired package set, > > it will purge any cached downloaded packages that are not matching > > any installed package. > > > > This will (currently) cap the pacman download cache at approx > > 256 MB. > > > > Signed-off-by: Daniel P. Berrangé > > --- > > .gitlab-ci.d/windows.yml | 1 + > > 1 file changed, 1 insertion(+) > > > > See a test job with this change, plus a find across the msys > > pacman cache, showing the cleanup effects.... > > > > Before cleanup: > > > > https://gitlab.com/berrange/qemu/-/jobs/11679136531#L34 > > > > After cleanup: > > > > https://gitlab.com/berrange/qemu/-/jobs/11679136531#L1126 > > > > diff --git a/.gitlab-ci.d/windows.yml b/.gitlab-ci.d/windows.yml > > index 1e6a01bd9a..6e1135d8b8 100644 > > --- a/.gitlab-ci.d/windows.yml > > +++ b/.gitlab-ci.d/windows.yml > > @@ -87,6 +87,7 @@ msys2-64bit: > > mingw-w64-x86_64-pkgconf > > mingw-w64-x86_64-python > > mingw-w64-x86_64-zstd" > > + - .\msys64\usr\bin\bash -lc "pacman -Sc --noconfirm" > > - Write-Output "Running build at $(Get-Date -Format u)" > > - $env:JOBS = $(.\msys64\usr\bin\bash -lc nproc) > > - $env:CHERE_INVOKING = 'yes' # Preserve the current working directory > > -- > > Reviewed-by: Peter Maydell > > Hopefully this will make the CI job take less time (for the > record, currently in the main CI run it takes about 70 minutes, > of which 10 minutes is "unpack the cache" at the start and > 20 minutes is "repack the cache" at the end). Based on how long it takes to pack/unpack the cache in my job, I'd be expecting approx a 25 minute win. With regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|