[niftydude]

(3rd Jul, 2013 12:16 PM)mk01 Wrote:  you can experiment with disabling zram (zram is doing zlib compression on memory blocks up to its size) - or change it's size (it's in /etc/default/zram-swap)
...
but at the end is strange, how people differently are measuring (feeling) "speed" and "time". there is another group, which sees the beta1 as fast

Ah I hadn't realised. This could explain why mine is feeling slow. I have one of the early rpis, which only has 256mb ram. With the current split of 128 gfx mem, this means I have only 128 mb system ram, and zram is being run on ALL of that, so memory access is slow.

But the people with newer rpis have 512mb ram, so only a third of their ram is being used by zram, so I can see why they would have fast performance. This might be why different people are having such different experiences!

I think I'll make zram much smaller or maybe disable it completely for a bit and see how performance is.

(3rd Jul, 2013 12:16 PM)mk01 Wrote:  you can disable CoW for sqlite files (rename Database dir, mkdir Database, chattr +C Database, cp all files from old to new) - no idea if you use them.

Good idea - when I did my tv-show scan, it crashed after it reached shows starting with J :-) maybe partly because of this.

(3rd Jul, 2013 12:16 PM)mk01 Wrote:  in beta1 until RC there is boot/start time logger (logged uptime at various steps during booting until full xbmc). check file /run/uptime_start.log.

at initramfs/init end: 6.62 0.58
at xbmc-preload: 8.63 0.58
at xbmc full load: 33.15 0.58

But booting isn't slow for me, beta1 definitely boots up much faster than the alphas!

(3rd Jul, 2013 12:16 PM)mk01 Wrote:  

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(3rd Jul, 2013 11:59 AM)niftydude Wrote:  Filename Type Size Used Priority
/dev/mmcblk0p3 partition 262140 0 -1
/dev/zram0 partition 131068 16784 20

the 16mb usage is just after start, or after at least 2h usage ?

This was after about an hour - but I ran a high def mkv video file for about 20 mins.

After about a day, swapon -sa looks like this:


/dev/mmcblk0p3 partition 262140 1196 -1
/dev/zram0 partition 131068 128296 20


and the system grinds to a halt. I think I'll definitely disable zram.