SD info and benchmarks (was Re: EOS M3 porting) - page 7 - DryOS Development - CHDK Forum supplierdeeply

SD info and benchmarks (was Re: EOS M3 porting)

  • 62 Replies
  • 27369 Views
*

Offline reyalp

  • ******
  • 13401
Re: SD info and benchmarks (was Re: EOS M3 porting)
« Reply #60 on: 10 / May / 2017, 00:49:49 »
Advertisements
Got it working!  My romcode.dis ramcode.dis was generated with incorrect address parameters.
My cheap kingston SD card maxes out at 10MB/s without CHDK and 9MB/s with CHDK.
The fact it shows "MEDIA_TYPE_SD:1.8V Support" without CHDK but not with confirms that the workaround is needed for proper UHS initialization, regardless of whether this particular card shows a speed benefit.
Don't forget what the H stands for.

*

Offline c_joerg

  • *****
  • 1151
Re: SD info and benchmarks (was Re: EOS M3 porting)
« Reply #61 on: 31 / January / 2018, 03:49:40 »
A new Card (SanDisk Extreme SDHC 32GB UHS-I) gives me more than 52Mbyte writing with RAW Data.  :D

Measured without CHDK gives nearly same results.
Plotted is the difference of the timestamps in the RAW data (which is more accurate than 1s). Once with 64GB Samsung EVO Plus and with SanDisk Extreme SDHC 32GB UHS-I. RAW File size around 24MByte

M100 100a, M3 101a, G9x II (1.00c), 2*G1x (101a,100e), S110 (103a), SX50 (100c), SX230 (101a), S45,
Flickr https://www.flickr.com/photos/136329431@N06/albums
YouTube https://www.youtube.com/channel/UCrTH0tHy9OYTVDzWIvXEMlw/videos?shelf_id=0&view=0&sort=dd

*

Offline Caefix

  • *****
  • 610
  • Sorry, busy deleting test shots...
Re: SD info and benchmarks (was Re: EOS M3 porting)
« Reply #62 on: 31 / December / 2020, 16:43:18 »
My last idea this year:  :haha
Maybe a benchmark could perform a sd_performance_value for dynamic sleep() calculation
or a warning like "some Features are limited / dangerous / not available due to slow card" ?
All lifetime is a loan from eternity.