SO...I wanted to give some performance enhancments that i have implemented on my NC. These have come from settings I have tweaked on my Epic 4G, that have seemed to GREATLY improve the smoothness and increased my wifi speeds. The first set of tweaks come courtesy of marcusant. His thread can be found here In the Epic 4G forums http://forum.xda-developers.com/show....php?t=1346680 This is to be copied into the sysctl.conf file located in /system/etc/. If its not there just create it.
net.ipv4.route.flush = 1
net.ipv4.tcp_rfc1337 = 1
net.ipv4.ip_no_pmtu_disc = 0
net.ipv4.tcp_sack = 1
net.ipv4.tcp_fack = 1
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_timestamps = 1
net.ipv4.tcp_rmem = 4096 39000 187000
net.ipv4.tcp_wmem = 4096 39000 187000
net.ipv4.tcp_mem = 187000 187000 187000
net.ipv4.tcp_no_metrics_save = 1
net.ipv4.tcp_moderate_rcvbuf = 1
The first 4 tests in the attachment were prior to this tweak on CM9.
The next set of tweaks is courtesy of this thread http://forum.xda-developers.com/show...42047&page=439.
In Rom Toolbox (Note: to make changes using ROM Toolbox, you will need to purchase the pro version) I also changed some other settings as follows:
Under Kernel Tweaks, sysctl Conf:
Min Free: 4096
Dirty Ratio: 90
Background Ratio: 70
VFS Cache: 1
Oom Kill is checked
Under build.prop tweaks:
LCD: 240 (this is not used for the NC)
Ring Delay: 0 (this is not used for the NC)
VM Heap: 32m
Scan Interval: 300
Max Events: 150 (this is not used for the NC)
Under Auto Memory Manager:
Foreground: 6 MB
Visible: 8 MB
Secondary: 16 MB
Content: 40 MB
Empty: 50 MB
SD Boost value is at 4096 kb
And the changes to build.prop that I got from Biggoron:
davlik.vm.heapsize=92m (should originally be 32m)
Add: (these do not exist and must be manually added)
davlik.vm.heapgrowthlimit=32m (thanks Bigoron)
I take NO credit for these tweaks, and no responsibility if it melts your NC! But I have found these tweaks to bring a HUGE improvement to my NC.
Also, my performance settings for CM9 are:
CPU Steps: 300, 600, 825, 1100, 1300
All at stock voltages.
Good luck and let me know any results or changes that may work better!