Database Info

18533 is significantly faster than 18538!!!

Here's the results of sk-tools benchmark (both overclocked at 624Mhz)
18533 (pdaviet 2.11.15F)
Integer : 311.2776 Moves/25usec
Floating point : 8.393 MWIPS
RAM access : 2213 Speed index
Draw bitmaps : 1391 Speed index
18538 (ivan v3.9)
Integer : 259.6454 Moves/25usec
Floating point : 6.934 MWIPS
RAM access : 1840 Speed index
Draw bitmaps : 1175 Speed index

Good thread, maybe it's time to start using some test tools for comparing results coming from different builds/ROMs.
Used SKTools v3.1.11.1.
My results from a already running Universal for a few days(no boot):
1 - Overclocked at 624Mhz:
Integer : 309.6257 Moves/25usec
Floating point : 6.965 MWIPS
RAM access : 1652 Speed index
Draw bitmaps : 1157 Speed index
Results after a cold boot:
1 - At 520Mhz:
Integer : 242.9738 Moves/25usec
Floating point : 7.008 MWIPS
RAM access : 1619 Speed index
Draw bitmaps : 1126 Speed index
2 - Overclocked at 624Mhz:
Integer : 307.1136 Moves/25usec
Floating point : 6.983 MWIPS
RAM access : 1635 Speed index
Draw bitmaps : 1134 Speed index

I have Ivan ce v3 (18538), my results:
Integer : 309.7286 Moves/25usec
Floating point : 8.375 MWIPS
RAM access : 2194 Speed index
Draw bitmaps : 920 Speed index

try to race with me
unreleased wm6 rom made by me running at 624
Integer : 350.1514 Moves/25usec
Floating point : 8.984 MWIPS
RAM access : 2308 Speed index
Draw bitmaps : 1691 Speed index

mo3ulla said:
try to race with me
unreleased wm6 rom made by me running at 624
Integer : 350.1514 Moves/25usec
Floating point : 8.984 MWIPS
RAM access : 2308 Speed index
Draw bitmaps : 1691 Speed index
Click to expand...
Click to collapse
wow! that's some speed! why is it not released yet?

MAMAICHs rebuilded sdhc drivers and transcend 8 gb class 6 with command query optimization
Storage Card (write); 1630.67;KB/sec
Storage Card (read); 4629.06;KB/sec

mo3ulla said:
MAMAICHs rebuilded sdhc drivers and transcend 8 gb class 6 with command query optimization
Storage Card (write); 1630.67;KB/sec
Storage Card (read); 4629.06;KB/sec
Click to expand...
Click to collapse
when will you release it?

mo3ulla said:
MAMAICHs rebuilded sdhc drivers and transcend 8 gb class 6 with command query optimization
Storage Card (write); 1630.67;KB/sec
Storage Card (read); 4629.06;KB/sec
Click to expand...
Click to collapse
Ok, Mo3ulla has my full attention now His previous ROMs have been fast as hell ... when is this one being released? can't wait to switch!!

Wow Smoking Rom!!!!
can't wait to test your super ROM.......Cheers!
mo3ulla said:
MAMAICHs rebuilded sdhc drivers and transcend 8 gb class 6 with command query optimization
Storage Card (write); 1630.67;KB/sec
Storage Card (read); 4629.06;KB/sec
Click to expand...
Click to collapse

by now sd drivers have some bugs and some not good things
1. sometimes after sleep sd write operatons totally not working .. sd becames as read only
2. command quering (addon for system storage manager) . takes some processor time 3-8% depens on many things..
3. system predictive read (new system service)(works on all system flash disks )- takes 2mb of ram // also not good for 64mb unis ... becose buffer size (this buffer creates for all disks ,, 1 disk 1 buffer) floating (2-10mb) also as feature this thing can lost data
4. also entire fat filesystem will stored in ram (1 mb)
5. system predictive write (service ) which virtually splits free space on blocks (1 mb free continius space then 3mb then 10 mb then 50 then 100mb ) this help system to define write place .. takes 1-2 mb (also it will alert about critical fragmentation )

and final thing ..... system storage (G3) via new imgfs driver and new services
Main storage (write); 1707.18;KB/sec
Main storage (read);3213.26;KB/sec
softreset in 15 seconds

With Pdaviet 2.11.15F (18533), my results:
Overclock at 624 mhz:
Integer : 311.2670 Moves/25usec
Floating point : 8.382 MWIPS
RAM access : 2204 Speed index
Draw bitmaps : 938 Speed index

Mike117 said:
With Pdaviet 2.11.15F (18533), my results:
Overclock at 624 mhz:
Integer : 311.2670 Moves/25usec
Floating point : 8.382 MWIPS
RAM access : 2204 Speed index
Draw bitmaps : 938 Speed index
Click to expand...
Click to collapse
I got faster results with this modifications:
1. Change the file system cache and file filters cache to automatic (0)
2. Change the glyph cache back to default (8192)

willy792003 said:
I got faster results with this modifications:
1. Change the file system cache and file filters cache to automatic (0)
Click to expand...
Click to collapse
How did you change it (where is it)?
Marco.

Jmp_3f8h said:
How did you change it (where is it)?
Marco.
Click to expand...
Click to collapse
HKLM\System\StorageManager\FATFS\CacheSize=0
HKLM\System\StorageManager\Filters\fsreplxfilt\ReplStoreCacheSize=0

willy792003 said:
Here's the results of sk-tools benchmark (both overclocked at 624Mhz)
18533 (pdaviet 2.11.15F)
Integer : 311.2776 Moves/25usec
Floating point : 8.393 MWIPS
RAM access : 2213 Speed index
Draw bitmaps : 1391 Speed index
18538 (ivan v3.9)
Integer : 259.6454 Moves/25usec
Floating point : 6.934 MWIPS
RAM access : 1840 Speed index
Draw bitmaps : 1175 Speed index
Click to expand...
Click to collapse
i think i know why there's so much diff. on ivan's rom, although i use the performance tool to oc to 624Mhz, it never really goes there (i use sk-tools to check the current cpu clock). so i am wondering is there anything needs to be done before i can oc my uni (registry edit, etc.)?

willy792003 said:
i think i know why there's so much diff. on ivan's rom, although i use the performance tool to oc to 624Mhz, it never really goes there (i use sk-tools to check the current cpu clock). so i am wondering is there anything needs to be done before i can oc my uni (registry edit, etc.)?
Click to expand...
Click to collapse
interesting.
and on other roms - when you check with sktools, you see 624mhz?

shlomki said:
interesting.
and on other roms - when you check with sktools, you see 624mhz?
Click to expand...
Click to collapse
yes. i see 624Mhz on pdaviet's rom.

this will prove that the performance tools doesn't have effect on ivan's v3.9
i install phm and oc my uni to 624Mhz
here's what i got:
Integer : 314.3258 Moves/25usec
Floating point : 8.395 MWIPS
RAM access : 2192 Speed index
Draw bitmaps : 1372 Speed index
now it's similar to what i get on pdaviet rom with performance tools.
any idea?

willy792003 said:
this will prove that the performance tools doesn't have effect on ivan's v3.9
any idea?
Click to expand...
Click to collapse
I have the same problem with latest Jwrightmcps rom (2.12.08): the performance tool (non shipped with the ROM, used as add-on) seems not having effect (altough it states that the overclock is active).
Maybe the performance tool is just an interface to configure some OS component not present in our ROMs
Marco.

/proc/meminfo shows total memory as 99040KB

/proc/meminfo on my G1 shows total memory as 99040KB. I thought the G1 had 192MB of SDRAM. Clearly I must be missing something here. The free command shows the same as well.

Good question... with that said where is our ROM at too? I don't see 256MB of ROM... by my calculations I am missing about 50MB but I could be wrong.

neoobs said:
Good question... with that said where is our ROM at too? I don't see 256MB of ROM... by my calculations I am missing about 50MB but I could be wrong.
Click to expand...
Click to collapse
The fact that they advertised it has having 256MB of ROM seems strange to me, since the internal memory that comes closest to that (268,400KB - when adding up the total sizes of the /dev /sqlite_stmt_journals /system /data and /cache partitions - is actually 262MB) is definitely not Read-Only-Memory. And it wouldn't appear to be 256MB, unless that /sqlite_stmt_journals is a subdivision of another partition like the /system/modules and /system/xbin (which I obviously left out of my calculations), that would bring it down to 264,304KB or 258MB - pretty close.
But that is still not ROM, so I don't know what they were getting at with that.. Unless I missed a memo and ROM doesn't just mean Read-Only-Memory any more...

I was confused about the use of "ROM" too. Apparently, it's just to differentiate between memory and storage. The /data partition is definitely not read-only.

techvd said:
/proc/meminfo on my G1 shows total memory as 99040KB. I thought the G1 had 192MB of SDRAM. Clearly I must be missing something here. The free command shows the same as well.
Click to expand...
Click to collapse
I think that the rest of the memory is reserver for the framebuffer and video textures etc.

The question was already answered by Hackborn on the mailing list.
https://groups.google.com/group/android-platform/browse_thread/thread/adb2fa9946275b73

i dont think that thread responds to "where the hell are the 100 MB remaining"
i dont believe "radio firmware" + "graphic framebuffers for shadows" + "etc" is eating 100 Mb of memory. I dont believe and in that forum they dont explain the numbers.
windows XP, with 800x600 x 65.000 colors, is able to run with just 64 Mb of ram, and only 200 Mhz. That would give as 120 Mb Free. to run games like diablo 2, baldur's gate (i played baldur's gate with my pentium mmx 200mhz)
This phone is superior than my Pentium 200mhz who had 64 ram. why this phone cant do the same with 3x times memory x 3x times cpu?
Why windows Xp (a real operating system) is running with a lot less resources than android ??? where is our 192 Mb of ram??

a 200mhz Pentium >>>> 384 mhz ARM processor

*) first of all, a pentium is faster than the arm we use, especially for things like gaming.
a PC is optimized for performance, an embedded architecture is optimzied for efficiency (especially regarding power consumption)
*) your PC has a graphiccard that has its own memory.
*) android = linux = real OS.
why do these rants always pop up whenever embedded systems are discussed.
it was the same with the gp2x / pandora scene, the same in every windows mobile forum, etc.
people, get a clue. attend a course about systems architecture or read a book or two...

Take a look here: http://forum.xda-developers.com/showthread.php?t=482228
Same discussion

you saw i called windows xp a real os and you started freaking out, lol !
*) cpu is 528 Mhz clocked down to 384 (google says: to conserve battery!!!!) , so they stole us speed and memory. Performance vs eficiency? i dont buy it. Its all the same running the same kernel.
*) my graphic card sucked balls, old ati radeon 128 with 16mb ram. So, 16 mb doesnt mean a **** in the middle of the 100MB we are missing.
*) android = java = resources devour, when i discover android = java i was disapointed, the real operating system running on my phone is the good kernel+debian armel which i had to host in memory card instead of internal memory because lately google is acting like microsoft. and im starting to think android will be as ****y as windows is.
yea i readed a pair of books and i know how to count, where is my Mhz and where is my Memory?
greetings

samsung s5230 whit android : it's possible?

i have samsung s5230 whit so samsung and it has a 200 mhz processor
and 144 mb memory and can i install android on this cell?

You know about games for PCs - they have minimum requirements. If your PC is slower than minimum requirements, game will work, but very slow. Android too will work with slower devices than requirements, but very slow. Your device is really too slow.
For Android minimum requirements:
1. ROM - at least 512 MB (now possible to boot from SD or any card);
2. CPU - at least 528 MHz;
3. RAM - at least 256 MB;
4. Internal memory - at least 130 MB;

Actually it is possible(anything is ).....but this feat would require extensive coding and a way to flash android.....also even if it boots...it will be a heck lot slow and would be just for show

Enable JIT in telechips tablets

Hi
If you dont know what JIT is, read the next article:
http://androidandme.com/2010/02/news/jit-compiler-coming-to-android-sooner-than-you-think/
THE FOLOWING STEPS CAN BRICK YOUR TABLET, MAKE IT UNUSABLE OR SLOW. TRY YOURSELF. I ONLY TESTED IT IN A SMARTQ V5 WITH ROOT AND ACCESS TO /SYSTEM.
Hardware.
Smartq V5
Tests:
Reboot
Kill all the apps with Advanced Task killer
Wait 60 secs
Launch Linpack for android or Quadrant Advanced (every launch has a reboot before, and quadrant only runs cpu test)
Results:
Linpack without JIT = 2507 Mflops
Linpack with JIT = 4004 MFlops
Quadrant without JIT = 463 points
Quadrant with JIT = 645 points
To use JIT you must write this line:
dalvik.vm.execution-mode=int:jit
in /system/build.prop
To get back you only must change jit by fast at the end of the line.
To test if JIT is working you must get lines like this in logcat:
D/dalvikvm( 1212): Total arena pages for JIT: 2
All Androids 2.1 delivered with Tablets that have Telechips cpu seems that has the correct libraries, so must work with all of them.
Corvus.

I have Cube U6 / G10 7" pad, will these JIT steps works for my pad ?
I am running android 2.1 Jan 2011 version.

[INFO][SHARE] What is zRam in Kernel?

Some budding devs like me and some others have asked this question and got this answer!
Firstly I want to thanks all who supported me!
My Parents for buying me an Android Device and Supporting
-CALIBAN666- for his thread
franciscofranco for his definition on zRam
abhisahara
Sniper Killer
And all those whom I have forgotten to mention!
Originally posted by Wikipedia
Q: What is zRam?
A: zRam is a module of the Linux kernel, previously called "compcache". zRam increases performance by avoiding paging on disk and instead uses a compressed block device in RAM in which paging takes place until it is necessary to use the swap space on the hard disk drive. Since using RAM is faster than using disks, zRam allows Linux to make more use of RAM when swapping/paging is required, especially on older computers with less RAM installed.
Google has also said to enable zRam as default for Chrome OS Devices!
Click to expand...
Click to collapse
Originally posted by franciscofranco
The zram module creates RAM based block devices: /dev/ramX (X = 0, 1, ...).
Pages written to these disks are compressed and stored in memory itself.
These disks allow very fast I/O and compression provides good amounts of
memory savings.
Basically is for storing swapped pages into compressed memory ram.
Click to expand...
Click to collapse
-CALIBAN666- said:
I think its better to Post this here,when its not better,than sorry!!!
-----------------------------------------------------------------
Once a brief statement for those who are not traveling so long in the Android scene:
ZRAM = ramzswap = Compcache
In order to explain more precisely ZRAM first need other terms are more clearly defined:
Swap can be compared with the swap file on Windows. If the memory (RAM) to complete the PC the data that are being used not actively outsource (eg background applications) so as to re-evacuate RAM free. To this data is written to a hard disk. If required, this data is then read back from there easily. Even the fastest SSD is slower than the RAM. On Android, there is no swap!
In ZRAM unnecessary storage resources are compressed and then moved to a reserved area in the fixed RAM (ZRAM). So a kind of swap in memory.
This Ram is more free because the data then only about 1/4 of the former storage requirements have. However, the CPU has to work in more because they compress the data has (or unpack again when they are needed). The advantage clearly lies in the speed. Since the swap partition in RAM is much faster than this is a swap partition on a hard drive.
In itself a great thing. But Android does not have a swap partition, and therefore brings Android ZRAM under no performance gain as would be the case with a normal PC.
In normal PC would look like this:
Swap = swap file (on disk) -> Slow
ZRAM (swap in RAM) -> Faster than swap
RAM -> Quick
With Android, there is no swap partition, and therefore brings ZRAM also no performance boost.
The only thing that brings ZRAM is "more" RAM. Compressed by the "enlarged" so to speak of the available memory. That's on devices with little RAM (<256MB) also pretty useful. The S2 has 1GB but the rich, and more than. There must not be artificially pushed up to 1.5 GB.
After you activate the ZRAM also has 2 disadvantages. The encoding and decoding using CPU time, which in turn has higher power consumption.
Roughly one can say (For devices with more than 512MB RAM):
Without ZRAM: + CPU Performance | + Battery | RAM
With ZRAM: CPU Performance |-Battery | + RAM
For devices with too little RAM so it makes perfect sense. But who shoots the S2 already be fully complete RAM and then still need more?
Check whether you can ZRAM runs in the terminal with
free or cat / proc / meminfo
I hope it helps to understand zRam!!!!
Click to expand...
Click to collapse
So basically zRam module in kernel increases and optimizes performance!
I didn't write all this information, I just compiled it together in one thread for ease :fingers-crossed:

But making it work is an headache.. you have to add LZO(Lempel–Ziv–Oberhumer) compression through menuconfig and then run zRam scripts through init.d and what not..

robowarrior1377 said:
But making it work is an headache.. you have to add LZO(Lempel–Ziv–Oberhumer) compression through menuconfig and then run zRam scripts through init.d and what not..
Click to expand...
Click to collapse
This thread is a information share thread
It is not a thread in how to enable it in your kernel -_-

Thanks for the info
Sent from my GT-N8000 using xda premium

Zram = extravagant battery
so it makes wasteful battery zram?
excuse me if my English is poorly

gj man thanks for info very helpful :good:

Change the first line of the thread.