Re: Massive interactivity improvement under high I/O load!
 

Is there a quick test i can run to compare the performance with and without these mods?

Re: Massive interactivity improvement under high I/O load!
 

The lines that form in the task-switching area -- they are from the CSSU? How do I get rid of them?

Re: Massive interactivity improvement under high I/O load!
 

Sure, try:

That will create a 512mb file on your SD card as fast as it can write. While it does that, try using the phone other tasks.

Re: Massive interactivity improvement under high I/O load!
 

Guys
I've been playing with settings from the first post and other things these days and so far my conclusions are:
Right after reboot the phone is fast and smooth, but in time performance degrades severely up to the point it becomes unresponsive for several seconds. Right now I am using only swappines 30 and nr_requests of 128 and the overall performance is great. Reducing nr_reqauests to 4 reduces io throuput to several K per second so it is not " option for me.

To test performance I was extracting ubuntu image on EMMC. While doing that I was changing different settings of io scheduler, including changing scheduler to to noop. With moderate result. My point was - why when one is copying file over USB there is absolutely no lag, but when doing same thing on n900 it freezes. The last thing to do was to play with swap - bingo, at the moment I swapoff EMMC swap, extracting speed raise to about 10 MB/s with no lagging at all. And the strange thing is that performance raise at the moment I did swapoff, even before swap was transferred to sdcard swap partition. Swap priorities do not matter - as long as EMMC swap is turned on, performance degrades severely. And I cannot see relation with behaviour under USB.Will continue to play with that and will report if find something

Re: Massive interactivity improvement under high I/O load!
 

Hi,

Great work. Didn't notice this till ivgalvez pointed it to the swappolube thread (http://talk.maemo.org/showpost.php?p...&postcount=339).

Just wanted to mention that will add the three missing/new fields in the Swappolube app (as soon as I read a little bit this thread).
Hope it is useful for your tests.

Cheers.

Re: Massive interactivity improvement under high I/O load!
 

What's the difference between swappolube and this?

Re: Massive interactivity improvement under high I/O load!
 

Not sure that is a good idea. Other than the current tweaks in swappolube the tweaks from this thread can cause serious problems. They sure do for me.

Re: Massive interactivity improvement under high I/O load!
 

Having them in Swappolluble will allow easier testing and reverting values.

Re: Massive interactivity improvement under high I/O load!
 

Well they should at least not be made part of the recommended settings set.

Re: Massive interactivity improvement under high I/O load!
 

Freemangordon, what setting do you suggest for being able to install and update the deb image ? I had lot of reboots while updating and lot of corruptions and starte verytime from zero which makes me sick !
Help