If anyone cares this is the card I have coming and will speed test by using dd(1) from the device to dev/null. But as Tim said the bus speed the Glamo willbe limiting. http://www.memorysuppliers.com/atp-fmcs-atp-microsd-af4gud-ap-with-adapter.html Jim
On Wed, Jul 30, 2008 at 3:07 PM, Jim Colton <[EMAIL PROTECTED]> wrote: > > Oh well, I should have bought a slower card. At least it won't be a > limiting factor. > I'll compare speeds I get with your 3M bytes/sec. anyway. > > I was meaning 12 megabits /sec.... > By 12MB/s I was referencing what I see here > http://en.wikipedia.org/wiki/Secure_Digital_card#Speeds > 12MB/s is not in the table shown in that link however I am about to receive > a 4G 80x or 12MB/s card in the mail . > > Thanks for your input Tim and Andy, > Jim > > > On Wed, Jul 30, 2008 at 1:05 PM, Andy Green <[EMAIL PROTECTED]> wrote: > >> -----BEGIN PGP SIGNED MESSAGE----- >> Hash: SHA1 >> >> Somebody in the thread at some point said: >> | Hey Tim, >> | >> | "no" it's not overkill or "no" is the glamo driver able to read that >> fast? >> | Are you involved with or knowledgeable of how the glamo drive works? >> | I'm not. >> >> I have that not very marketable distinction. >> >> We read from it at 16MHz / 4 bits, so not sure where this 12MBytes/sec >> figure came from. "Reading from SD Card" means collecting the block >> data into Glamo RAM, after we have it there we have to copy it into CPU >> RAM additionally. >> >> With some pending Glamo speedup patches in, effective Read speed is >> around 3MBytes/sec measured by md5sum-ing a 40MByte test file. >> >> - -Andy >> -----BEGIN PGP SIGNATURE----- >> Version: GnuPG v1.4.9 (GNU/Linux) >> Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org >> >> iEYEARECAAYFAkiQu5YACgkQOjLpvpq7dMpFXQCeL1Tfkde286nK/4ADTFFMLPqK >> LIoAmwSxRDrn90U3eE2OX5wVhAuZ5N97 >> =RFbe >> -----END PGP SIGNATURE----- >> >> _______________________________________________ >> support mailing list >> support@lists.openmoko.org >> https://lists.openmoko.org/mailman/listinfo/support >> > >
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