From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6B6F422759C for ; Sat, 29 Nov 2025 17:53:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764438809; cv=none; b=GpZTfXKgc8TkqS89EV3i4AGM+bBQBx/5J4mkAiWcnpCgcGcHHZc5umzKQtmLri4v5mS4bfIEb9yEgH0M4AlH3P/ELkht2SR1VecefJ2a3A10eQi2R3rE+q8rAqwxeHHGUFBIrXFgVg2couaiky544S5aiGE19WyZMPrke9gw+jA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764438809; c=relaxed/simple; bh=XfXbORGS3/ufhmLqd4i+Y3zEh+p/3MgoFyWXDmCj2FI=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=K6yzI2E4gBrv2oAPtRlgz6Io++yTm5VlvWkrwbDOb9KVzRsVyxRWwt7zExdyr8USkfKwmeag02U96fqr2IM7OLgqrb6EWdW2LW5COEVgh1cSmIJMP/TyLzk88h1n8IyK0sg6rDNDyGdMErcgGVWbrDznThjaSE43tP9Q3Q90NtA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=bgKzURXm; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="bgKzURXm" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 02D3BC4CEF7; Sat, 29 Nov 2025 17:53:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1764438809; bh=XfXbORGS3/ufhmLqd4i+Y3zEh+p/3MgoFyWXDmCj2FI=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=bgKzURXm+BYa1qDu9tOHu3WEYUO5a8rEwaA1ddTSL93c4zw1ozCBijrS8TekLhbcp NRwciruTXLKGiiFk47cspUzr2ovGxlt+5DVwetRM8ODOipuKU3bnkhkWN0z28UpVjb WBwXrwzLh/iNJ5lWDshTEgAHnmOKyvvDAAbWjOJEJK+/RzhfJ3yH5dMBSeHz5Rtbrv mLVajwbN3svIMJrPDah6f6SEKq1WluYvX4lXnO1ZlBbIq76maYhUuac3lJASL9U7SW QpGqL6BV3JlmCjNyiryBXkQTIlhIsbdRyHNozGJZNVl47tn+jHsLj76y3nRfsOA6Eg 0LNS+P9Gq2Gcg== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 788B83806934; Sat, 29 Nov 2025 17:50:31 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH bpf-next] bpf: optimize bpf_map_update_elem() for map-in-map types From: patchwork-bot+netdevbpf@kernel.org Message-Id: <176443863006.1061209.10606164337894467600.git-patchwork-notify@kernel.org> Date: Sat, 29 Nov 2025 17:50:30 +0000 References: <20251128000422.20462-1-ritesh@superluminal.eu> In-Reply-To: <20251128000422.20462-1-ritesh@superluminal.eu> To: Ritesh Oedayrajsingh Varma Cc: bpf@vger.kernel.org, ast@kernel.org, daniel@iogearbox.net, john.fastabend@gmail.com, andrii@kernel.org, houtao@huaweicloud.com, jelle@superluminal.eu Hello: This patch was applied to bpf/bpf-next.git (master) by Alexei Starovoitov : On Fri, 28 Nov 2025 01:02:35 +0100 you wrote: > Updating a BPF_MAP_TYPE_HASH_OF_MAPS or BPF_MAP_TYPE_ARRAY_OF_MAPS via > bpf_map_update_elem() is very expensive. > > In one of our workloads, we're inserting ~1400 maps of type > BPF_MAP_TYPE_ARRAY into a BPF_MAP_TYPE_ARRAY_OF_MAPS. This takes ~21 > seconds on a single thread, with an average of ~15ms per call: > > [...] Here is the summary with links: - [bpf-next] bpf: optimize bpf_map_update_elem() for map-in-map types https://git.kernel.org/bpf/bpf-next/c/ff34657aa72a You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html