Hi,
first-time-rom-installer here so bare with me if I'm asking stupid questions
I followed http://forum.xda-developers.com/showthread.php?t=1016084 so far with success, I've just finished partitioning the SD card but then I accidentally read something about ext4 would cause a shorter SD lifetime.
I'm not up to speed on all this stuff so logically I would go for ext4 (newest technology) but seen a lot of people saying there isn't noticable difference between ext3 and 4 is it really worth reducing SD lifetime?
Thx!
B
could you show us the info about ext 4 shortening lifetime
This shorting lifetime is a load of bull **** lol I have never seen one good evidence to this
I guess these are theories. I know leedroid has mentioned it.
Related
I read in one of the ROM threads that Ext4 partitions shorten your SD cards life. Is this true? I'm awaiting the arrival of a new card, and I wouldn't want to shorten its lifetime too much...
Sent from my HTC Desire
Myth, never seen actual proof. I'm using ext4 for 5 months now.
Ext3 and Ext4 add things like fancy journalling and stuff like that which make the filesystem faster, more flexible and robust etc, but involve lots of incremental writes to disk so yeah it will shorten its life.
Hello !
Sry for posting this here.. I'm still too new to post on dev threads =(
It's a question for ppl who use InsertCoin..
I got a 16gB microSD yesterday, so I want partition it for more ext..
But I saw this.. www[dot]miui-au[dot]com/faq/a2sd
If you go over 2Gb you may experience SD Card corruption and the Market will not operate properly!
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And I saw somebody saying that the maximum ext that I should get is 1.5 gB at InsertCoin's main thread.. I'm not sure.. (I couldn't find that post anymore =\)
Does anyone know if there's a limit for MAX EXT using InsertCoin?
Thanks a lot !
ercliou said:
Hello !
Sry for posting this here.. I'm still too new to post on dev threads =(
It's a question for ppl who use InsertCoin..
I got a 16gB microSD yesterday, so I want partition it for more ext..
But I saw this.. www[dot]miui-au[dot]com/faq/a2sd
And I saw somebody saying that the maximum ext that I should get is 1.5 gB at InsertCoin's main thread.. I'm not sure.. (I couldn't find that post anymore =\)
Does anyone know if there's a limit for MAX EXT using InsertCoin?
Thanks a lot !
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1GB ext is enough mate
Tried and tested
vashishtuday said:
1GB ext is enough mate
Tried and tested
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I concur, more than that is a waste of space and decreases the r/w speed.
1 GB is recommended, in my case i use 2GB as i need space to sync my emails and other data. As rightly mentioned by paul.c more the space the more the time it takes to read and write and eventually the performance decreases. It also depends on what type of sdcard you are using, like class4, class 5 and so on.......
I had 1GB but wasn't enough 2GB will have a lot of problems, 1,4-1,5GB is max I recommend you for insertcoin.. I don't have any problems , 1.43GB ext
paul.c said:
I concur, more than that is a waste of space and decreases the r/w speed.
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Sry for my noobility.. but why is that?
I mean.. flash memory allows random access, so why does it decreases r/w speed?
TopGear63z said:
I had 1GB but wasn't enough 2GB will have a lot of problems, 1,4-1,5GB is max I recommend you for insertcoin.. I don't have any problems , 1.43GB ext
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Thanks for your reply..
Could you point out what are the problems with 2GB ext?
And why do they happen?
Thanks !
I don't know why but Insertcoin became laggy as hell, never thought a class 6 16GB msd from Kingston could be the problem, but when i partioned it again i did just a little bit more than I had on my 8GB 1,3GB< and it helped a lot, Insertcoin is now working flawless.
Also another thing, idk if that's what they mean with sd card corruption but i could not move (almost) any files to my sd anymore since 2GB Ext. Got the whole time an error from windows, But why idk You should ask an expert I just don't recommend it
ercliou said:
Sry for my noobility.. but why is that?
I mean.. flash memory allows random access, so why does it decreases r/w speed?
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Ok, here is some geek talk!
EXT is really really slow! Why, becose its on your SD card, most SD cards used in phones are Class 2 cards, they have a read/write speed of 2MBs....
Your phones internal RAM/ROM have read speeds upto 1500MB/S and write speeds of about 500MB/S (depending on what type of chips used, PC RAM is much faster)
As you can see, there is a bit of a speed difference, even a Class 10 card is slow at 10MB/s
Also the SD card speeds are restricted by default, so if you are running a Class 2 card i would say you get about 1MB/s Read/Write speed (unless you use a SD card booster)
So the bigger the EXT, the slower the software is because it will take longer to read all the information, at 2GB of EXT (2048MB) takes the phone a long time to read going at less then 2MB/S on a class 2 card
Hi all,
what have u guys found is the optimal formatting options for using the 32gb microSD card on your Galaxy S2?
I'm wondering if you get better all around performance formatting the card with 64kb cluster sizes vs anything smaller.
am i on the only one with a 32gb sd card? if not, how is everyone formatting this thing?
thanks guys.
There is no special method or need , if you got windows 7 use default settings, i don't remember its either 32k or 64k.
There is lot of discussion about formatting in various sizes. There are apps in the market too that will do it for u .
U can try various sizes and see what is best for ur use.
Ultimately it does not matter much
drgopoos said:
There is lot of discussion about formatting in various sizes. There are apps in the market too that will do it for u .
U can try various sizes and see what is best for ur use.
Ultimately it does not matter much
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thanks..i've been reading around and there are those who prefer 64kb over 32kb and vice versa so was a bit confused and wanted to know what the experience of galaxy s2 users were.
i ended up doing a overwrite format (not quick) using 32kb cluster size. write speeds are apparently slower but i'm more concerned about reading speed. having said that, i have no idea what the reading speed difference is btw 32kb and 64kb...
oh well i guess it's not that important just wanted to get the most out of my card.
Can I use a part of the 1.5gb of rom in the desire z/ G2 to make a swap partition?!
It's dangerous to the eeprom life?
Performance would be much better than microSD I think..
nagash91 said:
Can I use a part of the 1.5gb of rom in the desire z/ G2 to make a swap partition?!
It's dangerous to the eeprom life?
Performance would be much better than microSD I think..
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As far as I know such a thing does not exist, though like you suggested it may be dangerous due to data corruption (though if properly partitioned you can fix it)
On the other hand using microSD for swap has been nothing but good for me, it has significantly improved speed, cause it is only a couple hundred Mbs of data on the swap partition so it can transfer quickly and smoothly, also it's only used when absolutely necessary.
What class microSD do you have?
noneabove said:
As far as I know such a thing does not exist, though like you suggested it may be dangerous due to data corruption (though if properly partitioned you can fix it)
On the other hand using microSD for swap has been nothing but good for me, it has significantly improved speed, cause it is only a couple hundred Mbs of data on the swap partition so it can transfer quickly and smoothly, also it's only used when absolutely necessary.
What class microSD do you have?
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I have class 6 microSD, but I think it's fake (trasfering speed is 2 - 3 mbps).
I think that the most important propriety for a good swap is the access time.. but the problem is that I can't find a site where I can see the access time of microSD tested by someone.
I want to buy a 32gb microSD class 10 or class 6, but if I can't find the access time..
I find that mustang and samsung microSD class 10 are cheap..
BTW I would love to know if I can make the swap file in /data or in /temp.
Access time in ROM is a lot faster that in microSD.
I don't think that rom can be damaged by a lot of writing, so why I can't use that support for swap. It would not faster as RAM, but absolutely faster than microSD class 10.
PS: I tried to make swap file on microSD with swapper2 and cyanomod 7.1. I get an error on swapon.. does cyanomod kernel support swap!? Thanks
nagash91 said:
I have class 6 microSD, but I think it's fake (trasfering speed is 2 - 3 mbps).
I think that the most important propriety for a good swap is the access time.. but the problem is that I can't find a site where I can see the access time of microSD tested by someone.
I want to buy a 32gb microSD class 10 or class 6, but if I can't find the access time..
I find that mustang and samsung microSD class 10 are cheap..
BTW I would love to know if I can make the swap file in /data or in /temp.
Access time in ROM is a lot faster that in microSD.
I don't think that rom can be damaged by a lot of writing, so why I can't use that support for swap. It would not faster as RAM, but absolutely faster than microSD class 10.
PS: I tried to make swap file on microSD with swapper2 and cyanomod 7.1. I get an error on swapon.. does cyanomod kernel support swap!? Thanks
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It should but for the life of me I have no idea why, I'm assuming you were just testing it out but if not, swap is NOT needed for most AOSP ROMs and could in fact slow down your phone and kill your battery.
Also swapper is not the most recommended way of doing it as if something gets corrupted there goes your whole SD Card.. :/ safer to make a partition on it.
As for speeds, the speed from the phone to the SD Card compared to the SD Card to the computer (through the phone/data cable) will vary significantly, and so will read/write times. For me through my phone I can read at around 15 Mb/s (class 10) and write at 3 Mb/s, but if I take it out and put it in a Micro SD Card converter then I can write at speeds of at least 10 Mb/s.
As for access time.. If I'm not mistaken, after RAM, SD storage is one of the fastest digital reading and writing in terms of access time. I have noticed no discrepancies in speed where it would have to read or write to my SD Card's swap so I think that'll be okay.
As for finding out if the ROM can be used... Quite frankly, not a clue, but I would tread lightly there if you want to start experimenting
i am thinking about the same question... Maybe it 's to be safe to use your sd card and make a swap partition. However i am on miui which doesn't require a swap so i don't have to use a swap partition. And the sense 3.5 and 3.0 are to slow and to heavy for me for the old desire z with a such amount of ram memory ..
I'm using VJ's CM10.1 ROM, it's good , but has random crashing issue. VJ gave a solution is using EXT3 instead of EXT4.
My question is, is there any noticeable difference between EXT3 and EXT4, when using A2SD? I'm using a SanDisk C4 SD, going to replace it with a SanDisk C10 SD. Would it cover the difference?
It's a slight difference, not really a huge one when we're working with small amounts of storage.
The real difference comes when we have an ext partition of several TB, like at linux computers. That's where ext4 shows its real speed.
abaaaabbbb63 said:
It's a slight difference, not really a huge one when we're working with small amounts of storage.
The real difference comes when we have an ext partition of several TB, like at linux computers. That's where ext4 shows its real speed.
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Thanks mate. I'll give EXT4 a try again, if still crash, I'll convert back to EXT3.
Really thanks.