yashsingh1/xdaforums huggingface dataset:
[Epic 4G General] garyf:
By now maybe there are some available performance results, especially since it's possible to run the same rom with different file systems.

I haven't seen much discussion about the performance aspects even in theory.

Is yaffs2 faster? Is it more stable or less likely to corrupt files? Does it result in more disk writes? Is it harder on the storage medium?

So beyond the fact that MTD/YAFFS2 is more mainstream and will make CM easier to keep up with what, if any are the performance benefits of the filesystem itself? Especially for people who may never go to CM or won't for months.

Oh, last question: MTD allows more storage in the /data folder if I understand correctly. How much more though? What is the /data size under BML and how large can it get under MTD? And what performance benefit is there from that?
[Epic 4G General] MДЯCЦSДИT:
More stable, faster, less writes, easier on disk, open source, dev customizable for partition sizes (not just data)...
[Epic 4G General] Gavisann:
I switched over to MTD yesterday and so far my phone is running fine. The switch took half an hour and I notice a little less lag with

certain apps.

IMO, you need to try it for yourself and see if you like it.

Send from my SPH-D700 (Samsung Epic 4G)
[Epic 4G General] AproSamurai:
1. From my own personal experiences, yes it contains a quicker response in areas in which it is needed, more of a smooth user experience. I've not yet seen someone complain about a clunkiness due to our new partition configuration. Yes it is more than stable, data corruption on MTD/yaffs2 is unheard of, very unlikely as it doesn't just randomly occur or nowhere as often as it can on EXT4, it doesn't mean that if you do something like OC to a high frequency that it cannot happen. That's always is and always will be subject to how you run your device. And no, it is more meant for flash based devices which we in essence are. It's a ways smoother and reads and writes better to our nand.

2. To a normal user, in all honesty, it's something new. The benefits are the increase in space of data. 689 mb to be exact, although some of that space is always being used from the getgo. Being that there are now stock boot.imgs any user can go to MTD and not truly have a need to go back to BML or the constant fear of having to Odin for those who are iffy on it and not lose out on the stock feel, they've a choice between AOSP as well as StockWiz.

3. 689 mb MTD compared to about 200ish BML, or less in the data. And you've got to take space from the others to allocate it in the longer run of things. It doesn't stunt or skyrocket performance, it's independent of it.

Let me know if I answered your questions at all lol. I was vague as usual.
[Epic 4G General] starskyrob:
I've battery pulled dozens of times on yaffs2 with no data corruption. no such luck on ext4
[Epic 4G General] toadlife:
I've not noticed one iota of difference between RFS, ext4 and now yaffs2 in real world usage, so all I can go on are the benchmarks I've run.

In my testing synthetic disk benchmarks have shown yaffs2 to perform about the same as RFS. ext4 is only faster when mounted with the unsafe, data-corrupting 'noauto_da_alloc' option. Without that options, it performs about the the same as RFS too.

yaffs2 is a win for all of the reasons marcusant listed aside from (IMO) performance.

---------- Post added at 08:57 PM ---------- Previous post was at 08:52 PM ----------

You can thank the 'noauto_da_alloc' option for that. In all of the documentation I've found regarding ext4, it explicitly warned that if you use that option you must have battery backup for your disk devices or you will experience zero length files in the case of power loss.

Whoever first discovered that tweak on ext4 and convinced everyone to use should be smacked over the head a few times.
[Epic 4G General] MДЯCЦSДИT:
I think team bonsai disabled journaling

..
[Epic 4G General] toadlife:
When I was first making my kernel I noticed that my ROM running ext4 would only score 1700 in Quadrant while other ext4 ROMs scored 2300. It turned out to be the 'noauto_da_alloc' option that provided that instant 700 point boost. I also experimented with jourmaling and found the difference it made very small - at least in quadrant scores. The 'noauto_da_alloc' option leads to zero length files on power loss, regardless of whether or not journaling is on.

Oh, and I think I found the person who introduced this to everyone. It was supercurio.

:p
[Epic 4G General] garyf:
I have to say I find this thread extremely informative.

Because of rfs/ext4, I expect there to be some form of tradeoff going between file systems. I'm a lot less worried about that now.

Thanks a lot all.

My understanding from the answers I've seen is that quadrant scores are about the same between rfs and yaffs2 and there are almost no real-world performance issues either way, except that it will take longer before you have to begin moving apps to sd storage.

If that's right, thanks for making it very easy to get that info.
[Epic 4G General] KennyG123:
Ouch!...LOL! And as quickly as I could re-enable journaling I did. Did not notice any performance difference. Now we have MTD!
[Epic 4G General] garyf:
Another thing, the extra space on the /data partition only comes for roms built for MTD, correct?

Until TW roms are built from the ground up with MTD, rather than porting them across, that benefit will not apply?

Also can someone explain in more detail where this extra memory is coming from? Do BML filesystems just waste 400 megs or so of storage space, or is something being compressed or removed to get this extra storage?
[Epic 4G General] ac16313:
This extra space is on every MTD ROM out. The space won't change whether the ROM is intentionaly built on MTD or not. The extra space on BML is taken by /cache which is reduced to 25MB or so. /cache is really only used by market(for large app downloads) and by OTA updates(which we'll only see 1 more).
[Epic 4G General] DCRocks:
WOW! I went and checked, and I have 267mb used and 409mb free now!

....and thats with NO apps on SD card!!!

Dammmmmmmmmmmm! :D

edit: 193mb used with 483mb free after moving apps to SD WOOHOO!

Would this affect extra large app downloads, as in when the app is 50+mb or some such?
[Epic 4G General] ac16313:
Not if the market is fixed to cache to sdcard :D
[Epic 4G General] DCRocks:
thanks, gonna have to keep an eye on that the next time I dl a large app
[Epic 4G General] MДЯCЦSДИT:
There is an init script in my rom and cm7 that downloads large apps to data.
[Epic 4G General] KennyG123:
Can you make a flashable for the rest of us ROM hoppers?
[Xperia Play Q&A, Help & Troubleshooting] Rixter757:
Hey all,

It's been a while since I've been flashing, but I'm up to speed on what needs done but I'm having a driver problem. Getting this error when trying to install the fastboot drivers:

Windows found driver but encountered an error while attempting to install it.

Android ADB Interface.

Anyone else have this problem?

Thanks for any advice,

Rixter
[Samsung Infuse 4G] jrphoenix77:
I've been lurking here for a long time, and had all kinds of fun flashing my HTC Fuze, Tilt 2, and Samsung Captivate. I now have an Infuse. I've had it for a while, and it's been rooted for a long time, but due to slow support here on the forums for it, and the fact that AT&T it taking forever with Gingerbread, I decided to wait a while to try to flash Gingerbread.

So, I finally decided by looking at the Gingerbread roms coming out that it was time to try to flash. I spent quite a few hours reading threads here on the forums, downloading gtg's unbrick, the Heimdall one click, and other files. I also finally got CWM installed on my phone. (Blue version).

So, I chose to use the Heimdall one-click to flash my phone to gingerbread and get the gingerbread bootloaders. I fired up Heimdall, installed the driver, clicked flash, and watched it go. Unfortunately it DIDN'T go. It stopped pretty much instantly. I figured no problem, there was no way it had had time to alter any files yet. WRONG. All I get when I turn the phone on now is a solid white screen. It did give me a multi-colored pixel arrangement at first, but now it's solid white. Odin will still recognize the phone, but it stalls as soon as it gets to factoryfs.

Any suggestions? Or am I fully bricked?
[Samsung Infuse 4G] dman3285:
If u can get to download mode use Odin...much better in my opinion
[Samsung Infuse 4G] jrphoenix77:
Odin recognizes the phone. It tries to flash but stops once it gets to factoryfs. (Using GTG's Ultimate Unbrick). Also, even tho I'm pretty sure the phone is getting into download mode because Odin recognizes it, the screen stays completely white.
[Samsung Infuse 4G] demonspork:
Try a different USB cable, a different USB port or a different computer. My rig got to the point that it would fail just like you are describing 90 percent of the time

I finally gave up and used heimdall to flash a kernel only, then I used cwm to flash a ROM from a zip. You don't have to use ultimate unbrick, just unbrick manually by flashing only a custom kernel. Any kernel will do, just not stock

I reinstalled windows a few Weeks later and it has flashed perfectly with heimdall and Odin ever since.
[Samsung Infuse 4G] jrphoenix77:
Tried all of those so far except a different cable. Gonna try the cable from my old captivate.
[Samsung Infuse 4G] dman3285:
The problem with hemidall is that if your not experienced using it you can do more damage than harm..you can ask dani897 if he knows how to fix it since hemidall caused it
[Samsung Infuse 4G] jrphoenix77:
Well seems like the cable was the issue. I noticed the old cable from my captivate feels thicker and heavier. Dunno why. Gonna try working with it a bit more. My screen is working again tho.
[Samsung Infuse 4G] jrphoenix77:
Well, I have to say thanks to Demonspork! Using my other usb cable did the trick. I'm gonna save that cable just for flashing. It took a couple flashes with GTG's Ultimate Unbrick to finally get it to the point of fully booting up but I'm good to go now.
[Samsung Infuse 4G] Ph0z3:
I'm assuming you're running ubuntu like I am since you used heimdall. Often times you will get rainbows when running heimdall... Not sure why though.

you can either run gtg's unbrick through wine on ubuntu, or use a windows machine to revert to stock.

The infuse is impossible to brick... Trust me, I've had more than, my share of issues.
[Samsung Infuse 4G] fastvan67:
Trouble! Got a brick :(

I have 2 Samsung Infuse phones. I updated my phone easily. I tried my wife's phone with the anti-brick program and this is what I got:

I cant get anything other than this. Is there anything i can do about this? My wife is ready to kill me.

Thanks
[Samsung Infuse 4G] rxnelson:
That is still download mode. Try to Odin/heimdall a compatible package. Not real sure what you are doing. Gingerbread leaks?
[Samsung Infuse 4G] bpt007:
odin3 v1.7 should work with your device... I have bee doing my infuse again and again... now i have 2.3.6 but it is too slow and catch lots of heat while charging.. so i don't give damn i am downgrading to frayo.. just put in download mod and odin should recognize your device...
[Samsung Infuse 4G] scyld:
Yeah, the !--->(PC) screen just means, "OK, you borked up my system, but I'm in download mode and ready for you to install a new one!"

IF you were using HEIMDALL, try downloading your ROM to the phone again. If it doesn't work, you may have to select the option to install a kernel as well. I bad to do this a couple times. However, always FIRST try without install a new kernel.

(Please correct me if the above is wrong...I mean if whatever the OP is talking about needs a new kernel...)

Also, what difference would a different USB cable make? Just curious. Is it just that the first one the OP tried was faulty?
[Samsung Infuse 4G] fastvan67:
Ok. I used Odin3 v1.70.

First time around I used PIT, PDA and Phone. That is when I got the first screen. This time around I used PDA. Thats when I got this screen. Its just stuck there now for the last hour.

I'm going to try another program.
[Samsung Infuse 4G] wolfen69:
Odin 1.81 has worked well for me. I just check off PDA and point it to the tar.md5 file that comes with it.
[Samsung Infuse 4G] fastvan67:
Where do I get Odin 1.8?

Just reflashed with the original file and all is back to normal. Back to 2.2.1
[Samsung Infuse 4G] wolfen69:
http://xdaforums.com/showthread.php?t=1092021
[Motorola Droid and Milestone General] Exleh:
Okay so my Droid is running okay, but I would like to have more memory for apps. So I figured, why not just use the app2sd script from DT after partitioning my card in CWM like I did my Ascend. I tried these steps:

1. In the CWM recovery (2.5.0.1 and 3.1.0.2) there is no option ANYWHERE to partition the SD card like in the 2.x.x.x CWM on my Ascend.

2. I partitioned in ROM Manager and chose 512 Partition with 128 MB Swap. The phone reboots and partitions the SD, and I checked in MiniTool Partition Wizard to make sure, there was a ext3 partition and a linux swap.

3. I move all apps to Internal memory, went in to CM Settings and allowed application moving.

4. Flashed DT's beta 4 script in recovery and it wouldnt boot, had to clear dalvik cache.

5. Get back in and found that the apps had moved no where. I check the sd-ext folder in Root Explorer and it said empty folder. a2sdgui does not work, if I change something, it just changes back.

6. Reflashed, tried S2E (simple2ext) and had the same issue, it isnt recognizing the ext partition.

7. Reflashed and tried various other settings with no luck.

What should I do? I really dislike having 15mb of internal memory free. Any help would be loved :D

Here is the info:

Was using the latest CM7 build but now I tried it on SteelDroid 9... same issue
[Motorola Droid and Milestone General] Exleh:
Got view but no replies? Need some help here....
[Motorola Droid and Milestone General] sfahadzb:
delete all previous scripts and try link2sd. i have been using it successfully.
[Eee Pad Transformer Q&A, Help & Troubleshooting] zedorda:
I am hoping someone can supple me with the means to spoof the market and the app "Order and Chaos" into thinking my TF-101 is really an Iconia A500. These two devices have nearly the same hardware but seem to have different market apps available. I bought Order and Chaos HD Online week or so ago from Gameloft Shop and was playing it just fine. I just told them I had an A500 and I got a download link for the apk. The recent update somehow is detecting I am not using a supported device and will not work anymore. I think a doctored up build.prop or something similar might help.

If I am able to get the app to show in the android market I plan to buy it again just so.

If it helps I have a B9O running Revolver 3.11
[Eee Pad Transformer Q&A, Help & Troubleshooting] skraam:
Just go to google and type Acer a500 build.lrop and it will show you the info. then just change the necessary 5 lines to acers and it's done. Did this two weeks ago and it's still stays and evertly app thinks I have A500 and no problems to me.
[Eee Pad Transformer Q&A, Help & Troubleshooting] zedorda:
Did that alrdy. I even went as far as editing everything line by line with acer/asus in it and copy/paste from a current 3.2.1 A500 a friend of mine has. It booted up but still no "Order and Chaos". Even after sideloading the apk from the A500 I have access to it still errors with not a compatible device when it tries to download the new content.
[Eee Pad Transformer Q&A, Help & Troubleshooting] jadesse:
I can't believe the lack of support there is for our Transformers on the Gameloft website. Most of those game should work on our Transformers without an issue. I have about four working but would buy more.
[Eee Pad Transformer Q&A, Help & Troubleshooting] weehooherod2:
I hate the compatibility issues too. Thank God we've got Tegra CPUs though, that at least puts the Transformer as a good target to develop for.
[G2 and Desire Z General] mintaeroboy:
What do you want to see if HTC bring out a hardware keyboard phone? Also names and any news.

Personal I would want qHD screen, terga 3 CPU, + GPU, 4G, sense/ics 4.0?, better speakers, 1900 mha battery, 16GB on broad memory, 2GB RAM,
[G2 and Desire Z General] user032:
QWERTY keyboard phones are unfortunately out of style nowadays. Moto Droid/Milestone is pretty much the only keyboard phone series with modern specs available at least over here. Samsung Captivate Glide seems intriguing with its dual core CPU and AMOLED display but it's US only.

If you are really looking for Sense, it's unfortunate that there are no rumors or leaks or anything about a HTC QWERTY flagship.
[G2 and Desire Z General] riahc3:
So says you. Although declining, Blackberries still sell and I refuse to buy anything that does not have a physical QWERTY keyboard.
[G2 and Desire Z General] eGetin:
That's not true. There clearly are people out there eagerly waiting for new QWERTY-phones, otherwise e.g. Sony Ericsson wouldn't sell Xperia pro and Mini pro etc. Nokia has released a few phones with QWERTY keyboard and as you said Motorola has Droids too.

Does anyone know how many Visions has been sold? HTC has always made qwerty-phones, I can't see any reason why they should stop now.
[G2 and Desire Z General] iucidium:
A QWERTY Nexus would be nice - death to Sense. When I owned a Desire Z rooting and going to an AOSP Gingerbread DOUBLED my battery life.
[G2 and Desire Z General] MarkMarrk:
I would like to see more internal memory, better speakers, a better screen and I would like to see them keep the touch sensitive "trackball" button at the bottom of the phone!
[G2 and Desire Z General] rirozizo:
to me, the only thing that matters is to make the soft buttons as hardware buttons, not the irritating touch

—————

|RIROZIZO|

—————
[G2 and Desire Z General] UnSungHERO420:
I'd love a 1080p screen, gorilla glass, tegra 3, 64gb internal, ICS of course, 4G, an INSANE camera, and no matter the mah a battery to hold it all together for 14+ hours at heavy use.

But that's just me.

let me not forget to say vanilla android!
[G2 and Desire Z General] makken85:
4.0" 720p screen, Qualcomm krait + adreno 225, pentaband 3g, AOSP ICS, 2GB ram, 16GB ROM + SD card, 5 row QWERTY with directional keys or D-pad, dedicated camera button, metal back cover with release lever.

hey, I can dream right? :D
[G2 and Desire Z General] opensourcefan:
I want an HTC device, built as solid and of as good quality as this one with updated Rezound like features. Not going to happen though, HTC has successfully grabbed a large portion of the market due to their past quality and has since shifted from quality to quantity.
[G2 and Desire Z General] ttinjust96:
does the HTC Mytouch 4G Slide come 2 mind?:cool:
[G2 and Desire Z General] user032:
It's not my personal opinion, just look at the current phone market with slates everywhere. For one, I'd love a powerful QWERTY smartphone to replace my current primary phone GSII, which was by the way the first non-keyboard one.

Aren't most of these are mid-range phones with the exception of Droid?
[G2 and Desire Z General] gtmaster303:
At least I'm not the only one that feels a bit lonely out here.

Android phones are being pumped out by the dozen, but there are very few QWERTY phones in the mix. I could probably count them all on one hand. Everyone uses either a GSM or CDMA network, so your options are halved right there as well

The only quality phones I have seen maybe worth trading my G2 in for, are the MyTouch 4G Slide and the Samsung Captivate Glide.

But they are still fairly new phones with no CM support yet....

---------- Post added at 08:46 AM ---------- Previous post was at 08:41 AM ----------

If that's what you want, then the 4G Slide is your only option. It's one of the only phones that still retains hardware keys.

I actually prefer hardware keys as well. But the 4G Slide wasn't out at the time, and I needed a little more horsepower than the 3G Slide I was carrying...
[G2 and Desire Z General] sino8r:
Damnit! this is just wishful thinking lol! I thought there was some news of the G3/Desire Super Z or something ;) Didn't we already have a wish list thread for the next big HTC qwerty model?

I do wonder about when it will happen. In tech terms, our great Desire Z/G2 is extremely antiquated. It does seem to be taking too long but the same happened with the G1. The only decent option I've seen is the MT4GS and that only a US model. Can't really compare a Samsung model because they are junk compared to their flagship models like the Galaxy line.

Even those... I'm hardly interested in those. Lack of led for battery/notifications, trackpad/ball, and plastic-ish build is too much for me to consider. Plus, even though I'm in the US, the MT4GS have literally 5 pages in the development section and has little dev support. All this is starting to get me worried! I don't think I can hold up much longer without a new phone lol! It's been way too long! I LOVE my G2 still but would love a dual core model with MORE RAM and stuff. Sino8r is getting anxious! :D

Plus, y'all are forgetting the Samsung Captivate Glide is only on AT&T in the US. That means no 3G. Stupid US carriers and billions of different frequencies.
[G2 and Desire Z General] gtmaster303:
It will be very interesting to see where all the G2 owners go when they need a new device. But as long as the dev scene is still hot here, I see no real reason to leave just yet. IF the 4G Slide starts to pick up once ICS is released, then I may consider it.

It's remarkable, the prices for that phone have already dropped as well to $250. Waiting for it to get around the $200 mark, and then I'll bite.

BTW, anyone looking for the absolute best value QWERTY phone, you can pick up a brand new 3G Slide from eBay for $140. And if you go through auctions, you can get it for less than that. Astonishing, considering G1 phones are going for just $30 less. Obviously all without contract.

(PS, this is not an advertisement or plug. Just a suggestion)
[G2 and Desire Z General] e183348:
The droid 4 looks promising. Really love the design and the idea of a back lit keyboard. Just hoping that they will have GSM bands with the phone. Fingers crossed!
[G2 and Desire Z General] blackknightavalon:
I was just about to mention that. Remap the Genius button into Search, flash one of undeadk9's "Sense lite" ROMs (posted on RootzWiki), flash unity's overclock kernel, buy an Anker 1900mAh battery or two, and this phone is a BEAST.

Sent via smoke signal.
[G2 and Desire Z General] mintaeroboy:
Maybe we should just make one? Like miui did with the mx
[G2 and Desire Z General] blackknightavalon:
Like Geeksphone? That's actually a good idea. Anyone know of anybody who can actually build a GSM cell phone that can work on both T-Mobile and Ma Bell?
[G2 and Desire Z General] mintaeroboy:
The Chinese
[G2 and Desire Z General] muffinwaffle:
Oh I know - !

G2S/Desire ZS.

Stuff a dual core in, overclock the GPU and call it a day.
[G2 and Desire Z General] gtmaster303:
I really like your signature. How can I make mine just like it?
[G2 and Desire Z General] blackknightavalon:
I Google image searched my previous phones, put their pictures in one .jpg file, added text, uploaded it to Flickr, and pasted the image URL itself in the signature.