From patchwork Thu Aug 7 15:46:03 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Marko X-Patchwork-Id: 68190 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 aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0974CC87FDA for ; Thu, 7 Aug 2025 15:47:01 +0000 (UTC) Received: from mta-64-227.siemens.flowmailer.net (mta-64-227.siemens.flowmailer.net [185.136.64.227]) by mx.groups.io with SMTP id smtpd.web10.55540.1754581619234005200 for ; Thu, 07 Aug 2025 08:46:59 -0700 Authentication-Results: mx.groups.io; dkim=pass header.i=peter.marko@siemens.com header.s=fm2 header.b=ci4w91Rd; spf=pass (domain: rts-flowmailer.siemens.com, ip: 185.136.64.227, mailfrom: fm-256628-20250807154655f9dab7e3651061bd11-o4eefn@rts-flowmailer.siemens.com) Received: by mta-64-227.siemens.flowmailer.net with ESMTPSA id 20250807154655f9dab7e3651061bd11 for ; Thu, 07 Aug 2025 17:46:55 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; s=fm2; d=siemens.com; i=peter.marko@siemens.com; h=Date:From:Subject:To:Message-ID:MIME-Version:Content-Type:Content-Transfer-Encoding:Cc; bh=EnRigztA9DftcjOOMJvubtTj7swFgp6Tj/DgpauCxss=; b=ci4w91RdbYPJ5sZlMJCiumAWT0U9aXVBx/ja0jGisVMWITC+FhCDaCcOS4gky1kZOCJ5U/ Avoe0CRv+Gj8DFNNlztx74Rla/WmVU54rBuUInkStxftWVkolCmmi/uEuCyrXOVaruYIO5J8 MKPIdR4HmeO6xqPzEj+2BcHDSPj7Y+f70pizdL8LGuY5ZRZ9EhUF2gby/bvJWdA8+DkbrovV 9PpkhjLTKUAUX93hUAEXSMrj8Fffx9RseHzbZlW+Hi9kXTsVMWLyLR+hcCfxEowQsjTILMIJ /vrvaWTzANg39R0bg2Mspss2tYX2wknRfZiFkEUej3UVAk9N2VyzONnw==; From: Peter Marko To: bitbake-devel@lists.openembedded.org Cc: docs@lists.yoctoproject.org, Peter Marko Subject: [PATCH] doc/bitbake-user-manual-ref-variables: update BB_TASK_IONICE_LEVEL Date: Thu, 7 Aug 2025 17:46:03 +0200 Message-Id: <20250807154603.10581-1-peter.marko@siemens.com> MIME-Version: 1.0 X-Flowmailer-Platform: Siemens Feedback-ID: 519:519-256628:519-21489:flowmailer List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Thu, 07 Aug 2025 15:47:01 -0000 X-Groupsio-URL: https://lists.yoctoproject.org/g/docs/message/7441 From: Peter Marko Provided example does not work due to two problems. CFQ scheduler was removed in kernel 4.20 (per [1]) Replace it with BFQ scheduler. Also fix typo "queu" -> "queue". [1] https://en.wikipedia.org/wiki/I/O_scheduling Signed-off-by: Peter Marko --- doc/bitbake-user-manual/bitbake-user-manual-ref-variables.rst | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.rst b/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.rst index 1545c914cc..810f886897 100644 --- a/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.rst +++ b/doc/bitbake-user-manual/bitbake-user-manual-ref-variables.rst @@ -770,11 +770,11 @@ overview of their function and contents. .. note:: In order for your I/O priority settings to take effect, you need the - Completely Fair Queuing (CFQ) Scheduler selected for the backing block + Budget Fair Queuing (BFQ) Scheduler selected for the backing block device. To select the scheduler, use the following command form where device is the device (e.g. sda, sdb, and so forth):: - $ sudo sh -c "echo cfq > /sys/block/device/queu/scheduler" + $ sudo sh -c "echo bfq > /sys/block/device/queue/scheduler" :term:`BB_TASK_NICE_LEVEL` Allows specific tasks to change their priority (i.e. nice level).