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From: Ahmad Fatoum <a.fatoum@pengutronix.de>
To: barebox@lists.infradead.org
Cc: Ahmad Fatoum <a.fatoum@pengutronix.de>
Subject: [PATCH 0/2] USB fastboot onto eMMC: make 30% faster!
Date: Thu, 27 Feb 2020 17:58:23 +0100	[thread overview]
Message-ID: <20200227165825.1624-1-a.fatoum@pengutronix.de> (raw)

I got a 2.9G image that I flash via fastboot to the eMMC and that takes
quite a while on my i.MX6Q.

Instead of fixing my image generation to make proper use of the sparse
format's don't care chunk types to save oneself from writing all these
holes at the end of the partitions, I went the easy route by tweaking the
block layer a bit:

barebox v2020.02.0: 445s
With first patch:   376s
With second patch:  300s

Of these 300s, 180s are spent writing zeroes...

Cheers,
Ahmad Fatoum (2):
  usb: gadget: fastboot: call discard_range for sparse files as well
  Revert "block: Adjust cache sizes"

 common/block.c                  | 4 ++--
 drivers/usb/gadget/f_fastboot.c | 2 ++
 2 files changed, 4 insertions(+), 2 deletions(-)

-- 
2.25.0


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             reply	other threads:[~2020-02-27 16:58 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-27 16:58 Ahmad Fatoum [this message]
2020-02-27 16:58 ` [PATCH 1/2] usb: gadget: fastboot: call discard_range for sparse files as well Ahmad Fatoum
2020-02-28  9:58   ` [PATCH] fixup! " Ahmad Fatoum
2020-02-27 16:58 ` [PATCH 2/2] Revert "block: Adjust cache sizes" Ahmad Fatoum
2020-03-02  8:15 ` [PATCH 0/2] USB fastboot onto eMMC: make 30% faster! Sascha Hauer

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