From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793883780; b=h88HHQ9qz06lXwG8KZc3XlbhyU5TfgiR6u+8iyl8f+B2bi3Sg9T546Cx3+62JLXSrv4m PtpC9vf2VwNwGaG9FxsZ0OHjO0wA/cROMQkvKH7oKA1bV4aSKJV9CSQNFPCwALFoGNnkE DlQMoZIRpeZB4p3ZHluyCT3DifvQWy7rWk+79Pz645zKUU4d6NA5Q8wa9F9m453bKO9ta oP+7vbc67GC83bOWk8Ph5uKLQocgSv5CN4H2p/nXFiNw8ZEN0JEaNW5snFGCdDonbhPH5 ebtkniLrctArtotlgmmqSuMND7q54ZztldoZ/AUkP+T2l9nJlM0lcJ2j21rOLSnjBZA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793883780; h=Received:DKIM-Signature:Message-ID:From:Subject:Reply-To:To:Cc: In-Reply-To:References:Content-Type:Content-Transfer-Encoding:Date; bh=ECTa9SdiXSRk8ftl8QHuZ8UqKqeWI0FonmdCjj/PQ5A=; b=OYgLdtW/+465wpbSd4whtMX379wtviO7ORs1WDoSPT7qyD4GCHonODby5U56vAgyjrGG MiniQR6p/wSl6QDkvPiElbMZV6+5djpaj3e6F6wdxxoY+SEJOGzB6vkrwf17v2iElORTk E8sTq0usbHpiclO/gD7R3/UoiWcCiS9D4Em0Ub0ER/lbM+4hTgWlS3tFklk3AevHKFZtN 1499LYR/sqImZQWkLxrsvR8Kvy5uT4jhBmm1a1UhlvBZ4mo62qBBdjsiIXipf7QW/MxkC DXSEkRPZqBPALrm+dTV6BH+Bv+w59T+jvAlyzYaTQxoUg+vh063hJVWog81ErQiXR6Q== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=aGnA4sQ1; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F413A606A31B for ; Thu, 5 Nov 2026 13:02:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=aGnA4sQ1 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7C57D1F00919; Thu, 5 Nov 2026 13:02:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793883779; bh=ECTa9SdiXSRk8ftl8QHuZ8UqKqeWI0FonmdCjj/PQ5A=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=aGnA4sQ133T+P7vbsrn6Dt7hZh3WSIuWcuTWAQC7SrJ8pDnFJOchGfYHQrN6eYtHo 8fQvtAbMnbl84PGTet+XN0tn3cK4QoWkBeaJuSeQFcqAd0YLFj6/fXgDeYakk5HFKP LCjS07i0ebvc+4w/bzrzrk4+EGIy9fALGw1B+GQwqju0IFNpLKC2oMJL45oF8cgv2H y3sgYzrD8/j7kH288sB1/6Yor/AZ8IlbPBnlnTfZ6FUuDg0kJswNWDDjK+hlxzHs9Y luuJUeMRRdYBxnFNtcLRC/IHG8qKPGBoIKuFWRAmRuemdtouCwKzlUeSr7MRO9jEkw aAvqCMyFjxO8w== Message-ID: From: sashiko-bot@kernel.org Subject: Re: [PATCH v4 09/19] perf cs-etm: Increase default timestamp generation period Reply-To: sashiko-reviews@lists.linux.dev To: "James Clark" Cc: linux-perf-users@vger.kernel.org In-Reply-To: <20261105-james-cs-unformatted-per-thread-fix-v4-9-7759e0ce2449@linaro.org> References: <20261105-james-cs-unformatted-per-thread-fix-v4-0-7759e0ce2449@linaro.org> <20261105-james-cs-unformatted-per-thread-fix-v4-9-7759e0ce2449@linaro.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Thu, 05 Nov 2026 13:02:59 +0000 X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list > The original purpose of timestamps in per-CPU mode was to roughly emit > samples in the order they occurred across multiple CPUs, rather than > emit all the trace from CPU 1 followed by all from CPU 2 etc. > Previously there was no way to change the interval from the minimum of 1 > cycle, but custom intervals are now supported by the driver. >=20 > Drastically reduce the number of timestamps emitted by increasing the > interval, which is more than enough to interleave sample generation. > This reduces the size of the trace generated. >=20 > Reviewed-by: Leo Yan > Tested-by: Leo Yan > Signed-off-by: James Clark Sashiko has reviewed this patch and found no issues. --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20261105-james-cs-u= nformatted-per-thread-fix-v4-0-7759e0ce2449@linaro.org?part=3D9