Develop Bugs

storage WM5

Need Advice
Upgraded my qtek 9090 to MW5 (No Complaints what so ever!!!) My storage avaiable reads as follows
program memory 91mb
storage Memory 54 mb
Ext Rom 5 mb
Temp disk 32 mb
Storage card 981 mb
My problem is I want to download Microsoft voice command to memory as well as other programs but when installing the program it does not give me the option to install the program to the program memory (it list everything else but program memory) Please advise . Thanks!!!

report: sth about 8G SDHC Class 6

8G SDHC Class 6 test :
wm6
- jw/rj and other new build can read 8G
- very slow,Even slower than the general SD card
- sad that always interrupt or auto reboot when copy large files
wm5
- AKU3.2/AKU3.3 ,only read 4G
- AKU3.3 can read storage and storage1 after made two partition
- very fast
- stable
now decide to return wm5

how to make 2 partition?thanks

its due you crappy filesystem settings ... on default public drivers not a problem to receive
Storage Card (write); 983.70;KB/sec
Storage Card (read);3092.10;KB/sec
(sktools 4)
under deep modified driver structure not problem to get
Storage Card (write);2563.70;KB/sec
Storage Card (read);4392.10;KB/sec

8gb sd card actual size?

I partitioned my 8gb card before so I could use apsd and I don't use it anymore so I formatted my card and it still only tells me there's 6700 mb available.. I know some of the card will be taken up with software to make the card work but I didn't think it would be a gig.. did I format the card wrong?

if not the whole reason, most of the reason is that when the manufacturer makes their claim of 8GB, they are using the formula of 1000B being 1KB, 1000KB being 1MB, 1000MB being 1 GB, then when systems read the card, 1024B is 1KB, 1024KB is 1MB, 1024MB is 1GB...
so if the card is 8000000 Bytes claimed by the manuf. then 8000000/1024/1024 should be 7.6 gigs
my 8gig card shows 7.39 in my phone, so maybe the OS reserved 200MB for something?

maddmatt02 said:
if not the whole reason, most of the reason is that when the manufacturer makes their claim of 8GB, they are using the formula of 1000B being 1KB, 1000KB being 1MB, 1000MB being 1 GB, then when systems read the card, 1024B is 1KB, 1024KB is 1MB, 1024MB is 1GB...
so if the card is 8000000 Bytes claimed by the manuf. then 8000000/1024/1024 should be 7.6 gigs
my 8gig card shows 7.39 in my phone, so maybe the OS reserved 200MB for something?
Click to expand...
Click to collapse
If you partitioned your SD card for a2sd reformatting won't give you back the whole card. You need to repartition and select 0 for swap, 0 for ext and 'the rest' for FAT. That will repartition it into something your phone (and Windows/Mac/etc) can see and give you back the full available space.

microSD/SD benchmarks on Galaxy S

Trying to figure out some facts about the internal/external SD cards speed, I came up to some conclusions.
First the benchmarks I've used:
For write speed:
Code:
rm /sdcard/sd/empty.file
echo 1 > /proc/sys/vm/drop_caches
time dd if=/dev/zero of=/sdcard/sd/empty.file bs=100000 count=2000
For read speed:
Code:
echo 1 > /proc/sys/vm/drop_caches
time dd of=/dev/null if=/sdcard/sd/empty.file bs=100000
Results:
Galaxy_S_internal_sd_card:
7.84MB/s write
10.49MB/s read
-------------------------------------
some Noname Silicon Power 2GB, no class specified (FAT with 32kilobytes) - the fastest microSD I own
8.51MB/s write
15.86MB/s read
-------------------------------------
Verbatim 4GB, class 4 (FAT with 32kilobytes)
5.14MB/s write
16.70MB/s read
-------------------------------------
A real SD card, not a microSD
SanDisk Ultra II class 4 (FAT32 with 4 kilobytes)
6.52MB/s write
11.47MB/s read
-------------------------------------
Again the same real SD card, not a microSD
SanDisk Ultra II class 4 (FAT32 but with 64 kilobytes)
16.81MB/s write
13.37MB/s read
-------------------------------------
Conclusions so far:
The microSD is faster at reading than my SD card. Including on Windows when tested with CrystalDiskMark.
When writing comes into play, the cluster size (4kb vs. 64kb) really makes a difference on Android. It is a huge difference when writing on the SD card. On Windows in CrystalDiskMark it doesn't matter.
Graph attached.
Can't figure out why writing on the SD card is faster than reading. Also can't figure out why reading is so slow comparing to the microSD cards.
P.S. I really want to test one of those Sandisk Ultra III class 10 with 30MB/s sustained write speed.
Also, would be great to know stats for the Sandisk microSD class 6 8GB with part number: SDSDQY-8192-E11M

For me (JPM Universal lagfix 0.3 full ext4) :
Internal NAND i9000 8GB
fat 32 :
4.561835 MB/s Write no cache
6.676458 MB/s Write with cache
10.782833 MB/s Read no cache
11.609682 MB/s Read with cache
3C_Pro 16 GB Class 6.
fat 32 :
5.397527 MB/s Write
6.002400 MB/s Write with cache
10.413954 MB/s Read
11.194447 MB/s Read with cache

speedmod-kernel-vC1-500hz-O2-ui
turn on the all tweak in clockwork recovery
/data
ext4
12.80 MB/s
11.01 MB/s
/system
rfs
5.75 MB/s
17.58 MB/s
/cache
rfs
7.25 MB/s
17.60 MB/s
internal SD
fat32
10.74 MB/s
11.24 MB/s
external SD : Kingston 8GB C4
fat32 with 32k block
7.56 MB/s
11.10 MB/s

@arise:
how on earth did u get a non-microSD into the phone ???

Contiguous file transfer speeds don't matter.

andrew_vi said:
/data
/system
Click to expand...
Click to collapse
How do you benchmarked those partitions? What is the free space available on those?
lemmz said:
how on earth did u get a non-microSD into the phone ???
Click to expand...
Click to collapse
With a SD to microSD adapter, obvious.
SetiroN said:
Contiguous file transfer speeds don't matter.
Click to expand...
Click to collapse
I can agree with this one. But what truly matters?

i have 30M+ free spaces in /system and 1.5GB+ in /data
so in /system, i take the test with a 20MB empty file by creat and write
and /data is same as you do, 200MB
though the write speed is not important in /system.
i think the r/w speed in /cache and /dbdata is more important than others

Arise said:
With a SD to microSD adapter, obvious.
Click to expand...
Click to collapse
Why would someone make this?

Because SD has few advantages over the microSD, like capacity size, price and speed. The only downside is the size of the card itself.
You can use such a thing vor various mods (it's up to you to find a way cramming the giant SD card inside your phone) or you can use your phone for backup/view the pictures taken with a REAL photo/video camera.

During some googling I came across this article:
http://windowsphonesecrets.com/2010...micro-sd-and-windows-phone-storage-expansion/
It seems that Microsoft has a bad attitude regarding using microSD cards.
“Even with high end cards, we have seen wild differences in IO and performance,” he said. “There is just no standardization there.” Put simply, if you expand the storage in a compatible Windows Phone device, it may work, and it may not.
Click to expand...
Click to collapse
I don't understand if the stance is regarding microSD cards or also the standard SDHC card. I somewhat believe it is related only to microSD cards. This is one of the reason I would also like to use a normal SD card in my phone.
Also, I found this article:
http://www.bunniestudios.com/blog/?p=918
The article, tells us couple of things:
1. it seems that some microSD cards are plain fakes. (it's not something we don't know)
2. it seems that Kingston is buying the controllers from Toshiba, and the controllers are the same as the ones used by Sandisk. So, when you compare Kingston vs Sandisk, you know who is the king.

[Q] MicroSD format for performance ?

OK, I got a class10 micro SD....tried some speed checks after formatting in Windows 7 64bit, using the SD card formatter, and using the phone.
For consistency, I formatted to fat32 and set the block size from default to the largest 64KB size.
Was copying files in Windows from the hard drive (7200speed 16mb cache drive) to the SD card and it never got over 4mb/sec, and usually stuck at 3mb a sec. I have a second class 10 card, but havent messed with it yet to see if it was a bad card or not. I ran a sd card test using the J card test app on the market and when I set it to the 8k size test, I saw 13mb/sec test, but the app said every time it couldnt write to cache, so I didnt know if it could be trusted.
I was just wondering how people were formatting their cards - via phone, windows, etc - and what level they found was the best for performance for class 6+ cards.

Mee too,i read that 32kb allocation is best.Would formating sdcard using Ext4 be faster then fat32/nfs?

I didnt know if I should be smaller (instead of 64 of 32k) since most of the files that we run are smaller ?? maybe it would run faster, I dunno....
also from what i read, ntfs isnt supported in android....right ?

I would be interested in this as well. I have a 16GB class 6 card in my Epic, and depending on the CPU clock speed governor I use I sometime get errors recording HD video ay 720p saying my card doesn't support it. If I put the governor to ondemand it works well though.
I'll try some testing with the Jcard app to see what I'm getting speed wise. I formatted my chip on Win7 default settings. When I was copying my files to it in Win7 I was getting 7 - 9 MB/s speeds. That was with the integrated SD card reader on my laptop.

I did some testing on my Team 16GB Micro SDHC I bought on newegg a while back, its a class 6 chip. I think it matters a lot what program you use to test. I did not find a j card app on the market but I used two that I found called "SD Tools" and "SDCardTester". Wildly divergent results below:
SD Tools:
Write Speed: 13.6 MB/s
Read Speed: 17.4 MB/s
SDCardTester:
Write Speed: 6.32 MB/s
Read Speed: 6.14 MB/s
This card is formatted with the standard 32 KB sectors.
---------- Post added at 11:48 PM ---------- Previous post was at 11:41 PM ----------
By the way, in general larger sectors should make for better performance, but the trade off is that you lose some storage. This is because the smallest amount of storage that can be allocated is going to be one sector. So if your sectors are 64 KB and you write a 8KB file, it will take the whole sector and even though there is only 8KB of data 64KB of space on the chip is used. In Windows, when you look at the properties for a folder, this is why there is a difference between "Size:" and "Size on Disk:" values.
Larger block sizes are generally better because there are fewer reads and writes to the device when saving a large file. For instance if you save a 1MB file on a 64 KB sector FS it needs to write to 16 different sectors, if you save the same file in a 8KB sector file system it needs to write to 128 different sectors.