I am running a Class 10 MicroSD card in my E4GT, but it does not give me anywhere near class 10 speeds. I used this same card in my previous Evo and it gave me nearly 10 MB write and 20 MB read using SD Tools. It also gives me these speeds when plugged into my PC card reader. The best I get using SD Tools is 5-6 MB read and same write speeds. I have tried adjusting the SD readahead settings to various values, but it didn't seem to make any difference. I know that the screen-on lag is due to the SD card, and I have a feeling that it could improve significantly if the SD card could function at it's rated speed. Also, this was the same in GB as well as ICS leaks. I have never tried AOSP on this phone. Has anyone else experienced similar issues? Is this a kernel thing? Thanks for any help.
sputnik767 said:
I am running a Class 10 MicroSD card in my E4GT, but it does not give me anywhere near class 10 speeds. I used this same card in my previous Evo and it gave me nearly 10 MB write and 20 MB read using SD Tools. It also gives me these speeds when plugged into my PC card reader. The best I get using SD Tools is 5-6 MB read and same write speeds. I have tried adjusting the SD readahead settings to various values, but it didn't seem to make any difference. I know that the screen-on lag is due to the SD card, and I have a feeling that it could improve significantly if the SD card could function at it's rated speed. Also, this was the same in GB as well as ICS leaks. I have never tried AOSP on this phone. Has anyone else experienced similar issues? Is this a kernel thing? Thanks for any help.
Click to expand...
Click to collapse
I had something similar to that happen to me with my E4gt. I took my card that came with my evo and put it in the epic and it was good for a while then it got really slow at transferring I mean like half an hour for 1 gig and then my phone started randomly rebooting like crazy. Turned out to be a failing card. Mine too would perform normally in some other devices. Bought a new card and have not had one reboot or slow transfer since.
Thanks. I think I have another class 10 card somewhere, I'll give it a shot when I get a chance.
Download these apps, on sdBooster, raise your cache too 2mb. On sd tools you can measure the change, hope that helps.
https://play.google.com/store/apps/details?id=de.mehrmann.sdbooster
https://play.google.com/store/apps/details?id=ales.veluscek.sdtools
Sent from a phone with kNOw CiQ kOnane...
Just to update, I have tried SD Booster (which does nothing more than change the SD Readahead values), I have tried a known good class 10 SD card, I have tried this SD card in my Evo, and the best I get is about 5 read and write speeds. Compare this with my Evo at 8 MB/s write and 31 MB/s read using the same SD Tools app. So I know the card is good and the issue is with my E4GT. Does anyone have any other ideas? I'm sure I can't be the only one who gets crappy speeds out of a class 10 SD card.
I also have the same problem. Funny thing is when my card is in my evo 3d its specs are waaaay better than in my epic touch. Maybe the card slot is jacked up? Or limited?
Sent from my BAD A$$ EPIC TOUCH 4G
Check out this thread at http://forum.xda-developers.com/showthread.php?t=1564145
All thanks should go to JohnCorleone.
Related
Has anyone tried this app? Been having issues with music cutting out when sd card is in use since upgrading to 2.2. So I thought i`d run this test as I have a transcend 8gb class 6 card. This app is reporting I have a class 2!?
My results are
write speed 3.0 mb/sec
read speed 7.0 mb/sec
Anyone else care to share their results, would like to know if this app is wrong or i`ve got a fake card.
Thanks
Just tried out the app and it says I have a class 4 card with a write speed of 5mb/s and read of 6mb/s though its rated at being a class 6 Transcend. I've got access to some other cards at work so I'll try them out as well. Might help to defrag?
Sent from my HTC Desire using XDA App
Thanks, actually I re-booted and closed down all non-essential apps and I got a 6mb/sec read/write saying it was a class 6.
But looking round the web people are reporting 10mb+ /sec on a class 6
Hv installed the app and made 3 tests successively for my 16Gb sandisk Class2 sd-card, said "Class2" as expected (second test resulted "ClassUnknown" and read speed was nil) anyway, overall result is;
Write speed: 2 Mb/s
Read speed: 1 Mb/s (!)
I thought read speed would be twice as much than the write speed; confused & disappointed!
Sent from my HTC Desire using XDA App
Getting the same problem with music skipping. Annoying as hell and only started since updating to 2.2
If you read what it says as tip 2 down the bottom, a class 6 card means a minimum read/write speed of 6mbps so it wouldn't be uncommon to see a higher read/write speed for the card. Wonder what a format would do for it.
Sent from my HTC Desire using XDA App
paulruk said:
Has anyone tried this app? Been having issues with music cutting out when sd card is in use since upgrading to 2.2. So I thought i`d run this test as I have a transcend 8gb class 6 card. This app is reporting I have a class 2!?
My results are
write speed 3.0 mb/sec
read speed 7.0 mb/sec
Anyone else care to share their results, would like to know if this app is wrong or i`ve got a fake card.
Thanks
Click to expand...
Click to collapse
Same card, same results.to get class 6 results you must haver perfect conditions and sequential write. Reading can usually be higher. I'm not sure, but I think it also deteriorates with time.
Ive got a 16gb Play.com Card and had the card for about 2 years now.
Its says class 2 on the card but i get the following.
1st test, Class 2
2nd test, Class 4
3rd test, Class 4
4th test, Class 4
CharlieCharlie24 said:
Getting the same problem with music skipping. Annoying as hell and only started since updating to 2.2
Click to expand...
Click to collapse
Yeah, and theyve screwed up web browsing. Think i`d rather have 2.1 back.
Jabbafat23 said:
If you read what it says as tip 2 down the bottom, a class 6 card means a minimum read/write speed of 6mbps so it wouldn't be uncommon to see a higher read/write speed for the card. Wonder what a format would do for it.
Sent from my HTC Desire using XDA App
Click to expand...
Click to collapse
Well looking at this thread http://androidforums.com/htc-evo-4g/86850-htc-evo-4g-sd-card-speed-test.html
Someone has the same card as me but getting 10mb/sec read & write. Albeit on an htc evo. But cant think it would make any difference.
It should also make sense that A2SD and Dalvik Cache to SD even more, will impact the test, no matter how much you close and kill processes before running the test.
For 720p purposes, I'd like to know if anyone who had problems with the stuttering (not low fps, but the frozen frame now and then), solved this with an upgrade in class and if it's really needed a class 10. Again, A2SD+ can be a factor in this.
Anyway, I've tried a cheap sandisk class2 16GB:
- first run, everything on, auto screen off: read 2MBit, write 3Mbit -> class 2
- second run, airplane on, auto screen off: same
- third run, killed everything, screen always on: read 6Mbit, write 3Mbit -> class 2
- fourth run, as above: same results
The interesting bit is that my transcend class 6, 8GB one, had very very similar results, with bumps to 4Mbit write right after boot, when killing everything...
That's what makes me hesitate to buy a class 10 card. Will the actual usage speed improve so much to justify the cost, especially on 720p ?
andycted said:
It should also make sense that A2SD and Dalvik Cache to SD even more, will impact the test, no matter how much you close and kill processes before running the test.
For 720p purposes, I'd like to know if anyone who had problems with the stuttering (not low fps, but the frozen frame now and then), solved this with an upgrade in class and if it's really needed a class 10. Again, A2SD+ can be a factor in this.
Anyway, I've tried a cheap sandisk class2 16GB:
- first run, everything on, auto screen off: read 2MBit, write 3Mbit -> class 2
- second run, airplane on, auto screen off: same
- third run, killed everything, screen always on: read 6Mbit, write 3Mbit -> class 2
- fourth run, as above: same results
The interesting bit is that my transcend class 6, 8GB one, had very very similar results, with bumps to 4Mbit write right after boot, when killing everything...
That's what makes me hesitate to buy a class 10 card. Will the actual usage speed improve so much to justify the cost, especially on 720p ?
Click to expand...
Click to collapse
I've had stuttering with video and my class 6 8gb transcend. I never use to, I blame 2.2
For that too. So much for a speed improvement , only thing that feels.quicker in 2.2 are app installs.
For reference, if anyone is interested:
HTC Desire, unbranded, generic Froyo 2.2 ROM with apps on the SD card as well
Sandisk 32GB Class 2 card shows:
Write speed: 4mb/s
Read speed: 2mb/s
Measured as a Class4 card.
removed
Kingston 16GB MICROSDHC CLASS 2:
Write 5MB/s
Read 16MB/s
Using: Galaxy S
Buffer: 1MB
Samsung 8gb class 6
Write 2mb
Read 6mb
I'm running a2sd+ though...
Sent from my HTC Desire using XDA App
Don't defrag non-mechanical memory devices
1 - you won't see (or measure) any difference
2 - the memory cells have a limited # of write cycles, which will be seriously impacted by useless defragging
I had the same problem as the OP (slow SD since Froyo upgrade causing music dropouts). Here's my collection of links to related posts, unfortunately I haven't found a solution except using a non-Sense ROM (e.g. Cyanogenmod).
http://forum.xda-developers.com/showthread.php?t=781606#9
http://forum.xda-developers.com/showthread.php?t=743792
http://forum.xda-developers.com/showthread.php?t=778748
http://forum.xda-developers.com/showthread.php?t=723073
I think it's kernel-related; I tried running the kernel from a Froyo/Sense ROM with the rest of an Eclair/Sense ROM and the SD card read speed was low (couldn't measure the speed with the SD Card Speed Test app because the touchscreen didn't work but I was able to adb in and use "dd").
Since a number of us are experiencing this problem I think it's worth us all reporting it to HTC support. If they know that a lot of people are seeing much worse SD card speeds in 2.2 than in 2.1 then they're more likely to fix it in a future update.
I've reported it to them already
Read 10MB/sec
Write 5MB/sec
It rated it as a class 4 card(Which it is), I'm quite surprised at that performance since I bought it for hardly 5$.
So I recently ordered a 16 GB micro sd card off Amazon since I've been using my MT4G for music and leaving my ipod at home, and wanted to bump up my capacity. Anyway, it's a Patriot Class 4 card, and I'm having some trouble. I inserted it into the phone, and selected 'format sd card' from settings, did it, but when I mounted sd card via usb to transfer files, it was going SO SLOW. Like, 50 minutes to transfer 200 MB or so. So...my question is, is there something I'm supposed to have done and didn't do? Or is it a bad card, or what? Because my 8 GB stock card was only class 4, and was MUCH faster.
Thanks for any insight!
Try using windows to format it using the default allocation size. I have seen some talk in the "32gig class 10" thread that doing this really sped up the transfer speeds of the cards over what you get when letting the phone format it.
Good luck.
rrrjr said:
Try using windows to format it using the default allocation size. I have seen some talk in the "32gig class 10" thread that doing this really sped up the transfer speeds of the cards over what you get when letting the phone format it.
Good luck.
Click to expand...
Click to collapse
Thanks for the help. I'm really unsure about what to do, been searching and can't really figure out if the card is bad or if I haven't formatted it correctly. Unfortunately, I'm on a macbook, so don't use Windows. Usually, there is a mac equivalent for anything windows can do, so I'll see what my options are. It's just driving me crazy, because it'll take DAYS to transfer all my music lol. Not sure why no one else has jumped in to help me out. Either no one knows anything about it, or it's such an obvious answer that I'm embarrassing myself. Either way, I'd love to hear which it is so I know how f-ed I am.
sunsean said:
Thanks for the help. I'm really unsure about what to do, been searching and can't really figure out if the card is bad or if I haven't formatted it correctly. Unfortunately, I'm on a macbook, so don't use Windows. Usually, there is a mac equivalent for anything windows can do, so I'll see what my options are. It's just driving me crazy, because it'll take DAYS to transfer all my music lol. Not sure why no one else has jumped in to help me out. Either no one knows anything about it, or it's such an obvious answer that I'm embarrassing myself. Either way, I'd love to hear which it is so I know how f-ed I am.
Click to expand...
Click to collapse
try doing a full format instead of a quick format with windows.
http://www.amazon.com/gp/product/B00413PF6G
I ordered that card last week and had the same issue you had. Max of like 2mbs transfer whether I mounted it through the MyTouch 4G USB, Included adapter or my USB card reader. I tried the panasonic formatting tool and half the time it would kill my card reader or just fail. Messed with it for like 4 days and couldn't find anything that helped. Must be a incompatibility, It was returned and I just received a Transcend 16gb Class 4. Transfer average 4-6mb depending if it's a large file or tons of smaller files.
sunsean said:
So I recently ordered a 16 GB micro sd card off Amazon since I've been using my MT4G for music and leaving my ipod at home, and wanted to bump up my capacity. Anyway, it's a Patriot Class 4 card, and I'm having some trouble. I inserted it into the phone, and selected 'format sd card' from settings, did it, but when I mounted sd card via usb to transfer files, it was going SO SLOW. Like, 50 minutes to transfer 200 MB or so. So...my question is, is there something I'm supposed to have done and didn't do? Or is it a bad card, or what? Because my 8 GB stock card was only class 4, and was MUCH faster.
Thanks for any insight!
Click to expand...
Click to collapse
I've done alot of testing for sd cards and android because i had similar issues with my patriot SD card and I've found that a 32K cluster sizes gives great speeds. Only time you really need smaller is if u are using a actual hard disk or if your average file size are around 3-10 Kb but with mp3 and most other files being around 3-10Mb you lose alot of and speed as a result of having smaller clusters.
Now say u use maverick maps and have cached over several million tiles all of which are 1kb each then use a smaller cluster size to save space or those millions of 1k tiles could fill a entire 8 gig card as opposed to actual size of 700Mb but it will take a horrendously long time to transfer to those card. so its a trade off.
So bottom line use a 32k allocation table. It will give you good optimization of space and speed.
I have also found that formatting the sd card with the phone rather than with my mac also causes slow transfer rates so I format all my sd cards on my mac (or pc) before putting them in my phone. Transfer rates are much quicker that way.
I have Kingston 16gb class 10 and I would only average 1-2mb/s when copying files over.
I reformatted in via Windows to a few different cluster sizes and did some testing with my phone.
For my usage I went with a 64k cluster size. My copy speeds to the card average 13mb/s. I don't really store small files on the card so I'm not worried about excessive space use right now.
Now here's a question for all of you:
What is the MicroSD Card that is included with your phone? I know it's a 16GB, but does yours have a company branded on it, and also what class is your SD card?
The reason I ask this is because I want to know if they switched the SD Card on my phone with a crappy one and took the good one just before I picked it up. The SD card that came with my phone is just a plain generic Class 2 card. CLASS 2!! It doesn't even have where it is made at. I'm thinking, are you serious?!?! The transfer rate is so horrible, averaging only at 1.5MBps. Takes me over 30 minutes to transfer about one 1GB of files.
My friend who got the rezound at least got a Class 4 card, even though it's generic and made in Taiwan. But his transfer rate is averaging at 15MBps.
So I just wanna double check with all of you and make sure we all have the same type of SD card.
p.s. Also, this could be the reason why the phone sometimes perform sluggishly. I have a feeling when it pulls anything from the SD Card, may it be a large app, music or videos etc, it will have to wait to read from it.
OH! could this be the MAIN reason behind the slow response when taking pictures? I read that this phone has a horrible camera speed, but it might be due to the SD Card being slow and can only write at very low speed to the card.
I also noticed the slow performance of the included micro sd card, and I can't even access it from my card reader, but only through the phone's "mass storage" mode. Anyway just ordered a Sandisk class 4 32GB card from amazon...
The default card that came with mine is a Class 4 8GB made by Kingston. It doesn't say Kingston on it, but I have an actual Kingston SD card to compare it to.
aquariuz23 said:
Now here's a question for all of you:
What is the MicroSD Card that is included with your phone? I know it's a 16GB, but does yours have a company branded on it, and also what class is your SD card?
The reason I ask this is because I want to know if they switched the SD Card on my phone with a crappy one and took the good one just before I picked it up. The SD card that came with my phone is just a plain generic Class 2 card. CLASS 2!! It doesn't even have where it is made at. I'm thinking, are you serious?!?! The transfer rate is so horrible, averaging only at 1.5MBps. Takes me over 30 minutes to transfer about one 1GB of files.
My friend who got the rezound at least got a Class 4 card, even though it's generic and made in Taiwan. But his transfer rate is averaging at 15MBps.
So I just wanna double check with all of you and make sure we all have the same type of SD card.
p.s. Also, this could be the reason why the phone sometimes perform sluggishly. I have a feeling when it pulls anything from the SD Card, may it be a large app, music or videos etc, it will have to wait to read from it.
OH! could this be the MAIN reason behind the slow response when taking pictures? I read that this phone has a horrible camera speed, but it might be due to the SD Card being slow and can only write at very low speed to the card.
Click to expand...
Click to collapse
If that's the default save spot, then yes, that could possibly be the issue. How big are the pictures?
LiViD said:
The default card that came with mine is a Class 4 8GB made by Kingston. It doesn't say Kingston on it, but I have an actual Kingston SD card to compare it to.
Click to expand...
Click to collapse
8GB class 4?? wow that is small in size, although it is a class 4 card. Livid, is it because you are on Bell? Could this be carrier related? Also, how is your camera? Is it having that speed issue in between pictures?
bmxant said:
If that's the default save spot, then yes, that could possibly be the issue. How big are the pictures?
Click to expand...
Click to collapse
bmxant, I took some pics and at full res, they average at around 1.3-1.5 MB, which is just right there with the speed, giving it a second or 2 delay in storing/saving them onto the sd card.
Sandisk Class4 16gb in mine. Mine was ordered and sent directly from AT&T site...I'm leaning toward them swapping out the card on yours.
If you're only writing at 1.5Mb's, that would definitely cause an extra second of lag. Would be nice if we could see a comparison between the Class 2 SD card vs Class 4.
How much cheaper could they get? It's bad enough the phone has 4GB of internal storage. They should of included either a 32GB Class 2, or 16GB Class 4.
Edit: Just read Namuna's post. Why would they swap out the card?
Namuna said:
Sandisk Class4 16gb in mine. Mine was ordered and sent directly from AT&T site...I'm leaning toward them swapping out the card on yours.
Click to expand...
Click to collapse
Alright thanks, I just need some more confirmations and I can visit the store again and confront them with it. I will make them open a fresh box in front of me and check it, unless of course they've swapped all in that store lol!
@aquariuz23: It probably is carrier related. You guys got double on the SD storage and RAM storage versus what we got. I feel a little screwed in that regard, but meh.
For photo taking, it only took one second to snap the picture and store it on the card. The gallery took 5 seconds to read 84 pictures that were stored on the SD card.
LiViD said:
@aquariuz23: It probably is carrier related. You guys got double on the SD storage and RAM storage versus what we got. I feel a little screwed in that regard, but meh.
For photo taking, it only took one second to snap the picture and store it on the card. The gallery took 5 seconds to read 84 pictures that were stored on the SD card.
Click to expand...
Click to collapse
That sounds pretty good, what does Antutu say your write speed is?
Topram Class6 16GB here. SD Tools report 18.5MB/sec read and 5.5MB/sec write, which is pretty accurate for C6. (btw, card manufactured in 2009)
This phone I bought used, can't confirm the card is the original.
6.3 MB/s write and 13 MB/s read. It's about average for a Class 4 SD card.
what do u guys use to test the read/writes of the sd card? I wanna do a test on mine as well.
aquariuz23 said:
what do u guys use to test the read/writes of the sd card? I wanna do a test on mine as well.
Click to expand...
Click to collapse
I always used Antutu
Tested with SD Tools
http://www.amazon.com/KOMPUTERBAY-C...&s=electronics&ie=UTF8&qid=1325197909&sr=1-11
Think this is worth it?
I am getting an average of 2.9MB/s Write and 11.1MB/s Read. Seems like a typical class 2 card. Took it a while to run the test too since it's so slow lol.
I got 5.4MB/s write, 15.5MB/s read (Antutu) on the 16GB Class 2 card from my Captivate that I wiped and stuck in the Nitro and gave the one that came with it to my Captivate (running hacksung's ICS). Is the included card that bad?
According to AnTuTu:
3.4 MB/s write
>50 MB/s read
According to SD Tools:
5.7 MB/s write
20 MB read
Nothing like some consistency between utils.
Namuna said:
According to AnTuTu:
3.4 MB/s write
>50 MB/s read
According to SD Tools:
5.7 MB/s write
20 MB read
Nothing like some consistency between utils.
Click to expand...
Click to collapse
That just crippled my trust in AnTuTu's tests...sorry but there is no microSD card with >50mb/sec read speed, it's impossible.
I just got my new 32GB Class 4 SD card, and was shocked to see that the write speed was nearly half the speed of the SD card that came with the phone, which turned out to be a Class 6. But what confuses me most of all is that a higher class should be faster if I'm correct, and the write speed of my new SD class is slower, but the read speed is actually faster. I'm seriously confused as to if this is what is meant to happen. >.<
Speeds of MicroSD cards tend to fluctuate, especially under the Android environment. You may have tested when the Class 4 was at peak read speeds, and when the Class 6 was at low read speeds
But it wasnt just one test, I tested the Class 6 multiple times and was getting 13 - 14mb read, and the Class 4 got 19mb+
>.<
Did you takes all those tests in a row? Or on separate occasions? My class 6 Sandisk got above 28mbps reads even on Android
Seeing as though you got 28mbps, Im starting to wonder whether my SD cards are faulty, my phone is faulty or something else. >.<
In addition, you'll also see different speeds when using cards of different brands. However, high sequential read/write speeds aren't always what you should be looking for. If you run ROMs from SD or have lots of apps installed to your SD, you should also consider looking at the random read write/speeds as those speeds are more important for those aspects.
If your new sd card is a larger storage it will be slower because it has more data to check through if they are the same size you may have even got a dodgy sd card or fake there is lots of reasons why this can happen and as solar plexus said
Solar.Plexus said:
In addition, you'll also see different speeds when using cards of different brands. However, high sequential read/write speeds aren't always what you should be looking for. If you run ROMs from SD or have lots of apps installed to your SD, you should also consider looking at the random read write/speeds as those speeds are more important for those aspects.
Click to expand...
Click to collapse
Sent from my R800i using xda premium
I have tried two SD card in my phone now.
They work fine when not in use but if I write to the card the performance is abysmal.
The cards were Samsung 64GB UHS1 class 3 100MB/s. (Not slow cards).
When I write to the SD card from the phone or my external nas or a download. The homescreen performance is unbelievably laggy. When it stops it's fine. No apps are stored to the SD card either.
When I put the cards in my PC. They will write at 50MB/s all day long, in my phone they hit about 20MB/s for a small period then drop to 5-6MB/s.
When I run A1 SD Card benchmark my write speed for my SD Card was 8MB/s. On my PC it's much faster.
Can anyone try something similar? Download a 500MB file that saves directly to their SD Card. Even if I download an album directly to SD from spotify I get lag on the homescreen.
did the sd card benchmark, the top one, that matched the size of my card in a1
my results are 75.69mb read and 59.76 write on my s9, card pulled from my s7 and plopped in the new phone as is.
64g samsung pro plus
let me know about specific testing, new to the app, but already had it installed.
ben-fisher-bro said:
I have tried two SD card in my phone now.
They work fine when not in use but if I write to the card the performance is abysmal.
The cards were Samsung 64GB UHS1 class 3 100MB/s. (Not slow cards).
When I write to the SD card from the phone or my external nas or a download. The homescreen performance is unbelievably laggy. When it stops it's fine. No apps are stored to the SD card either.
When I put the cards in my PC. They will write at 50MB/s all day long, in my phone they hit about 20MB/s for a small period then drop to 5-6MB/s.
When I run A1 SD Card benchmark my write speed for my SD Card was 8MB/s. On my PC it's much faster.
Can anyone try something similar? Download a 500MB file that saves directly to their SD Card. Even if I download an album directly to SD from spotify I get lag on the homescreen.
Click to expand...
Click to collapse
Those are very slow cards actually.
Ive been using these, the difference is staggering.
http://www.lexar.com/portfolio_page/professional-1800x-microsdhcmicrosdxc-uhs-ii-cards/
That said your home screen shouldn't be lagging like that, got to be something else going on.
sent from my Pixel 2 XL or Note FE
force70 said:
Those are very slow cards actually.
Ive been using these, the difference is staggering.
http://www.lexar.com/portfolio_page/professional-1800x-microsdhcmicrosdxc-uhs-ii-cards/
That said your home screen shouldn't be lagging like that, got to be something else going on.
sent from my Pixel 2 XL or Note FE
Click to expand...
Click to collapse
So I just left it and it's okay now. Maybe it was doing something in the background. Managing 50MB/s writes and not lags on the homescreen, not sure what was going on!