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| The Following 10 Users Say Thank You to locusf For This Useful Post: | ||
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2009-07-21
, 14:15
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Posts: 159 |
Thanked: 341 times |
Joined on Dec 2007
@ Helsinki, Finland
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#2
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Originally Posted by locusf
Ok, I got the fix for N810 and all ARM based products that were having issues with compcache. So here ramzswap.zip it is.
Hi,
Just wanted to report on some results regarding compcache on N810 diablo. I compiled the modules required and I have given it a small test on my own N810. See the link below for information.
http://code.google.com/p/compcache/
See the attached zip:
EDIT: now its called ramzswap
Attachment 3304
By far I have tested it with the biggest RAM hog that I know, the browser.
Some proof attached:
root@Nokia-N810-23-14:~ #_cat /proc/swaps
Filename Type Size Used Priority
/dev/ramzswap0 partition 31692 2008 -2
EDIT:
After posting my tablet rebooted, *sigh*
| The Following 7 Users Say Thank You to locusf For This Useful Post: | ||
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2009-07-21
, 14:26
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Posts: 1,671 |
Thanked: 11,478 times |
Joined on Jun 2008
@ Warsaw, Poland
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#3
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Originally Posted by locusf
Could you release the source you used in order to build it, as well? Then we can include in Mer kernels, for instance. Or is it just the release from the code.google site?
Ok, I got the fix for N810 and all ARM based products that were having issues with compcache. So here Attachment 3740 it is.
__________________
As you go on to other communities, remember to build them around politeness, respect, trust and humility. Be wary of poisonous people and deal with them before they end up killing your community.. Seen it happen to too many IRC channels, forums, open source projects.
As you go on to other communities, remember to build them around politeness, respect, trust and humility. Be wary of poisonous people and deal with them before they end up killing your community.. Seen it happen to too many IRC channels, forums, open source projects.
Last edited by Stskeeps; 2009-07-21 at 14:30.
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2009-07-21
, 14:46
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Posts: 74 |
Thanked: 19 times |
Joined on Oct 2008
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#4
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I'm interested in some more information about it as well. It sounds like a great idea but how do I properly use the .ko files? Can we make it into a package that can be installed through apt-get? What kind of performance are you seeing?
Thanks!
Thanks!
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2009-07-21
, 15:16
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Posts: 159 |
Thanked: 341 times |
Joined on Dec 2007
@ Helsinki, Finland
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#5
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Originally Posted by Stskeeps
Yeah its just the release from code.google.com site.
Could you release the source you used in order to build it, as well? Then we can include in Mer kernels, for instance. Or is it just the release from the code.google site?
I'm interested in some more information about it as well. It sounds like a great idea but how do I properly use the .ko files? Can we make it into a package that can be installed through apt-get? What kind of performance are you seeing?
Thanks!
You gotta ask the admins to include this to Mer repository, I can of course make a package for this if needed. But without the package, extract the zip and run from the same directory as you extracted the zip:
Code:
insmod xvmalloc.ko insmod ramzswap.ko
Code:
insmod ramzswap.ko disksize_kb=10240
Last edited by locusf; 2009-07-21 at 15:35.
| The Following 2 Users Say Thank You to locusf For This Useful Post: | ||
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2009-07-22
, 04:27
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Posts: 2,142 |
Thanked: 2,054 times |
Joined on Dec 2006
@ Sicily
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#6
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I insmodded both modules without error messages - but when I ask cat /proc/swaps only the flash swap on mmc2 is shown.
EDIT Aha! needs
Code:
swapoff /media/mmc2/.swap swapon /dev/ramzswap0 /media/mmc2/.swap
Also, ooo allocates all the default 31700 megabytes of the ramzswap device, and runs over the .swap file on flash which has lower priority. Maybe a bigger ramzswap space could be better - tweak and experiment.
@locusf: also, I bet you have ported the 0.5 version, because it does not accept the parameters of the newest version, i.e. 0.6. Would you mind trying that one? Thanks
__________________
Ernesto de Bernardis
Ernesto de Bernardis
Last edited by debernardis; 2009-07-22 at 14:49.
| The Following User Says Thank You to debernardis For This Useful Post: | ||
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2009-07-22
, 22:21
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Posts: 2,355 |
Thanked: 5,249 times |
Joined on Jan 2009
@ Barcelona
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#7
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This is a very nice idea indeed but I see two missing critical features:
a) When the "virtual swap" is full, it sends _uncompressed_ pages to the backing swap device. It would be nice to compress them before, may help with swap-on-sd performance.
b) The Diablo kernel version (2.6.21) does not support bio_discard (AFAIK) and as such it does not free memory when you close apps -- it will reuse it as soon as you need to swap out again, but it won't reuse the memory for file cache or something else.
After playing with it for a while:
Performance feels indeed better but as soon as you hit the MemLimit it slows down to a crawl again, and that's why I am suggesting a).
BTW, I could open nxagent, oowriter, oocalc, abiword, cacaovm running swt-example, the sun embedded jvm, xfce, Thunar, plus the whole of hildon at the same time before it started being unusable =).
Last edited by javispedro; 2009-07-22 at 22:25.
a) When the "virtual swap" is full, it sends _uncompressed_ pages to the backing swap device. It would be nice to compress them before, may help with swap-on-sd performance.
b) The Diablo kernel version (2.6.21) does not support bio_discard (AFAIK) and as such it does not free memory when you close apps -- it will reuse it as soon as you need to swap out again, but it won't reuse the memory for file cache or something else.
After playing with it for a while:
Code:
BackingSwap: /dev/mmcblk1p3 DiskSize: 265072 kB MemLimit: 19016 kB NumReads: 46543 NumWrites: 55683 FailedReads: 0 FailedWrites: 0 InvalidIO: 0 PagesDiscard: 0 ZeroPages: 5774 GoodCompress: 100 % NoCompress: 0 % PagesStored: 22095 PagesUsed: 4838 OrigDataSize: 88380 kB ComprDataSize: 19012 kB MemUsedTotal: 19352 kB BDevNumReads: 21727 BDevNumWrites: 16769
BTW, I could open nxagent, oowriter, oocalc, abiword, cacaovm running swt-example, the sun embedded jvm, xfce, Thunar, plus the whole of hildon at the same time before it started being unusable =).
Last edited by javispedro; 2009-07-22 at 22:25.
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2009-07-24
, 09:46
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Posts: 41 |
Thanked: 13 times |
Joined on Jun 2009
@ Wien , Austria
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#8
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Any hope to get this working in OS2007HE?
770 users desperately need those kind of improvements.
770 users desperately need those kind of improvements.
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2009-08-14
, 07:11
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Posts: 2,142 |
Thanked: 2,054 times |
Joined on Dec 2006
@ Sicily
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#9
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I've been daily issuing this:
when all application are closed.
This wipes the flash-based swap and re-enables it after.
I'm convinced (maybe it's an illusion) that it keeps my tablet quicker by refreshing all swap needed to the ram-based compressed ramzswap0 device.
Code:
swapoff /dev/ramzswap0 /media/mmc2/.swap swapon /dev/ramzswap0 /media/mmc2/.swap
This wipes the flash-based swap and re-enables it after.
I'm convinced (maybe it's an illusion) that it keeps my tablet quicker by refreshing all swap needed to the ram-based compressed ramzswap0 device.
__________________
Ernesto de Bernardis
Ernesto de Bernardis
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2009-08-14
, 10:43
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Posts: 2,355 |
Thanked: 5,249 times |
Joined on Jan 2009
@ Barcelona
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#10
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Originally Posted by debernardis
By doing that ramzswap will not be using /media/mmc2/.swap as backing swap, but Linux will. The former is theoretically better. Is there any reason you're doing it this way? (even though maybe there's no performance benefit either way).
I've been daily issuing this: [CODE]
swapon /dev/ramzswap0 /media/mmc2/.swap[/CODE
Just wanted to report on some results regarding compcache on N810 diablo. I compiled the modules required and I have given it a small test on my own N810. See the link below for information.
http://code.google.com/p/compcache/
See the attached zip:
EDIT: now its called ramzswap
ramzswap.zip
By far I have tested it with the biggest RAM hog that I know, the browser.
Some proof attached:
root@Nokia-N810-23-14:~ #_cat /proc/swaps
Filename Type Size Used Priority
/dev/ramzswap0 partition 31692 2008 -2
EDIT:
After posting my tablet rebooted, *sigh*
Regards,
LoCusF
http://locusf.blogspot.com
Last edited by locusf; 2009-04-04 at 11:48.