From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-lj1-x22c.google.com ([2a00:1450:4864:20::22c]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iegl7-0000h8-Lg for barebox@lists.infradead.org; Tue, 10 Dec 2019 14:45:06 +0000 Received: by mail-lj1-x22c.google.com with SMTP id a13so20185333ljm.10 for ; Tue, 10 Dec 2019 06:45:04 -0800 (PST) MIME-Version: 1.0 From: Hubert Feurstein Date: Tue, 10 Dec 2019 15:44:52 +0100 Message-ID: List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [BUG] imx6qdl: degraded eMMC write performance To: barebox@lists.infradead.org Hi, I've updated barebox for our custom platform from v2015.06.0 to v2019.12.0. With the new version I have noticed a much worse write performance onto the onboard eMMC. With v2015.06.0 the indicated progress of the copy command is very smooth. Calling "cp -v /dev/zero /dev/mmc3.root" takes about 80 seconds for 256MB. But with v2019.12.0 the progress is very bumpy and the copy takes about 280 seconds. I've tracked this down to this commit which destroys the performance: "block: Adjust cache sizes" (b6fef20c1215c6ef0004f6af4a9c4b77af51dc43) Regards Hubert _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox