Hi, Recently I've been using my AOA110 quite a lot and, as it's always the case with linux, I've been trying to improve performance to the maximum possible. I'm gonna say the things I've done, and I'd hope that I'm missing something and that someone out there knows some more tweaks. To overcome the 8GB SSD, I installed Ubuntu on a 16GB SD card on the left hand slot (which is a bit complicated but doable, although I couldn't make suspend work). The card cost 70€ but made the netbook very usable. I also added an extra gig of ram for 15€. Also makes a big difference. I use ext4, but I wasn't able to disable journaling. From what I understand, it's quite the task. Anyone knows if it's worth it? On /etc/sysctl.conf I added at the end [code]vm.swappiness=10 vm.dirty_ratio = 40 vm.dirty_background_ratio = 1 vm.dirty_writeback_centisecs = 30000[/code] These are not optimal values in anyway, but I found them do work nice. Are there any optimal values at all? I think that linpus manipulates these variables as well but honestly don't remember where I saw it. On the kernel variable side, I used in /etc/default/grub [code]GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pciehp.pciehp_force=1 elevator=deadline enable_mtrr_cleanup"[/code] I used elevator=noop, it's the standard recommendation, but I saw a guy recommending deadline. I've been trying it... the difference is very subtle, but I think it works better actualy. The enable_mtrr_cleanup I'm unsure. Prior to enabling, I had this prior cleanup [code]ceno@ceno-netbook-ubuntu:~$ cat /proc/mtrr reg00: base=0x0fffe0000 ( 4095MB), size= 128KB, count=1: write-protect reg01: base=0x0fffc0000 ( 4095MB), size= 128KB, count=1: uncachable reg02: base=0x000000000 ( 0MB), size= 1024MB, count=1: write-back reg03: base=0x040000000 ( 1024MB), size= 512MB, count=1: write-back reg04: base=0x05f800000 ( 1528MB), size= 8MB, count=1: uncachable reg05: base=0x05f600000 ( 1526MB), size= 2MB, count=1: uncachable reg06: base=0x05f500000 ( 1525MB), size= 1MB, count=1: uncachable reg07: base=0x000000000 ( 0MB), size= 128KB, count=1: uncachable[/code] after cleanup [code]ceno@ceno-netbook-ubuntu:~$ cat /proc/mtrr reg00: base=0x000000000 ( 0MB), size= 1024MB, count=1: write-back reg01: base=0x040000000 ( 1024MB), size= 512MB, count=1: write-back reg02: base=0x05f500000 ( 1525MB), size= 1MB, count=1: uncachable reg03: base=0x05f600000 ( 1526MB), size= 2MB, count=1: uncachable reg04: base=0x05f800000 ( 1528MB), size= 8MB, count=1: uncachable reg05: base=0x060000000 ( 1536MB), size= 256MB, count=1: write-combining [/code] So there is a difference, but I've been finding it difficult to notice. Last thing I did was mount /tmp as a tmpfs on ram and pointed the firefox cache to /tmp, and I also mounted the chromium cache directory as a tmpfs. These are not the top of the top of performance gain, but it's very noticable and very easy to do. So my /etc/fstab looks like this at the end [code] tmpfolder /tmp tmpfs defaults,noatime,mode=1777 0 0 chromiumcache /home/ceno/.cache/chromium tmpfs defaults,noatime,mode=1777 0 0 [/code] With compiz activated, I can see 480p youtube videos fullscreen (720p no way), south park episodes on southparkstudios.com and shows on adulswim.co.uk also fullscreen. I didn't test actual performance video with say a .mkv. Am I missing something? I read a guy somewhere on the internet claiming his karmic performance issues were solved with disabling hyperthreading. I tried adding noht to the kernel parameters in grub, but the kernel still recognized 2 cpus. I'd like to give it a shot, even if it's really counter intuitive. Anyone know how to do this?
