maemo.org - Talk
Page 8 of 39 « First 67 8 91018 Last »
Show 40 post(s) from this thread on one page

maemo.org - Talk (https://talk.maemo.org/index.php)
-   Applications (https://talk.maemo.org/forumdisplay.php?f=41)
-   -   [announce] swappolube to lubricate your gui (https://talk.maemo.org/showthread.php?t=62312)

egoshin 2010-09-17 18:52
Re: [announce] swappolube to lubricate your gui
 
Quote:
Originally Posted by fms (Post 819066)
Please, correct me if I am wrong, but I doubt this one makes sense, as flash memory appears to be written in 256kB pages. So, the original number of 5 that translates into 32*4096=128kB makes more sense. You may even increase it to 6!
I just repeat myself (I posted it somewhere near swapiness thread) -

The flash block size is 128KBytes typical. That means - if you write a smaller block it is possible that hardware READS 128KB before, replace your small portion and write back. In this case it has a big sense to write by N * 128KB blocks to eliminate reads.

However, if you write sequentially, a smart hardware may have some buffering and it may determine that your next write is in the same 128KB block and combine it. In this case a size of page cluster less 128KB may have sense because it allows kernel interrupt page write operation and it accelerates a device reaction.

Unfortunately, I don't know - is eMMC hardware smart enough.

egoshin 2010-09-17 18:55
Re: [announce] swappolube to lubricate your gui
 
Quote:
Originally Posted by fms (Post 819138)
I really really think someone should try and package COMPCACHE for the N900. It may make a huge difference, by providing fast intermediate swap area in RAM (where swapped out pages are stored in gzipped form).
It would have a big impact on battery life (1) because CPU usage, and it decreases an available RAM space which is very valuable for N900 Maemo (2). So, it would decrease N900 performance.

But your mileage varies - test yourself.

atilla 2010-09-17 19:00
Re: [announce] swappolube to lubricate your gui
 
for me it works great too.
everything seems much more responsive.
850mhz,mohammads hildon package your swappiness package....
damn my phone is a beast!!
i love you guys.
thanks for your work

lvlonkey 2010-09-17 19:07
Re: [announce] swappolube to lubricate your gui
 
sounds interesting but ill hold off until yall figure all the possible kinks out.

arora.rohan 2010-09-17 19:09
Re: [announce] swappolube to lubricate your gui
 
This script is amazing...
Just amazing..
look at this...
http://i51.tinypic.com/ac4ayf.png

its been 24 hours since i charged this phone.. Amazing script!!! Amazing work!
850mhz Lv ,mohammads hildon package , this swappiness package

maartenmk 2010-09-17 19:10
Re: [announce] swappolube to lubricate your gui
 
Quote:
Originally Posted by fms (Post 819139)
I know for sure that the swappiness thing helps. You can test it by running Fennec or any other memory hogging application. The kill_oob_* thing looks sane, and so does the laptop_mode (based on its description found with Google). The tcp_* stuff is petty and probably does not make any difference to the network performance (unless somebody proves otherwise). Can't say much about the rest.
I do know that swappiness is not the only thing that helps. I had just that modified first and couldn't notice a big difference, but running this script I most certainly can! (shadowjk, if you think this is placebo effect you probably haven't tried it yet)
The two variables that weren't permanent before are questionable. I didn't notice they didn't stick.

RogerTHAcctant 2010-09-17 19:23
Re: [announce] swappolube to lubricate your gui
 
great optimizations, its way smoother now, thanks!!

fms 2010-09-17 19:34
Re: [announce] swappolube to lubricate your gui
 
Quote:
Originally Posted by egoshin (Post 819175)
It would have a big impact on battery life (1) because CPU usage, and it decreases an available RAM space which is very valuable for N900 Maemo (2). So, it would decrease N900 performance.
Not necessarily. Given how expensive MMC access operations are, gzipping most pages to, let us say, 16MB of RAM may well prove to be faster than pushing the same pages to the MMC.

slender 2010-09-17 19:54
Re: [announce] swappolube to lubricate your gui
 
Btw
http://www.csn.ul.ie/~mel/docs/vm/
http://www.informit.com/store/produc...bn=0131453483#

egoshin 2010-09-17 20:03
Re: [announce] swappolube to lubricate your gui
 
Quote:
Originally Posted by fms (Post 819196)
Not necessarily. Given how expensive MMC access operations are, gzipping most pages to, let us say, 16MB of RAM may well prove to be faster than pushing the same pages to the MMC.
I run root FS from /home partition - move root FS from UBIFS which is a compressed file system and I see the battery time increase and also - don't see any significant impact on performance.

So, I guess, a compression of swap space may be not a good thing on N900.


All times are GMT. The time now is 16:06.
Page 8 of 39 « First 67 8 91018 Last »
Show 40 post(s) from this thread on one page

vBulletin® Version 3.8.8