Changes between Version 2 and Version 3 of QtWebKitProfilingSetup


Ignore:
Timestamp:
Sep 30, 2009 9:30:33 PM (11 years ago)
Author:
zecke@selfish.org
Comment:

--

Legend:

Unmodified
Added
Removed
Modified
  • QtWebKitProfilingSetup

    v2 v3  
    1616  * There are multiple levels to track this. One way is to monitor how many pages the kernel has allocated for the process, another one is to look at the requested address space (sbrk) and the third way is to look at calls to malloc/free. The [http://www.secretlabs.de/memprof memprof] and memusage utilities do keep track of malloc/free calls.
    1717
     18=== Selecting target hardware ===
     19To generate a performance baseline hardware and base system needs to be selected. I have picked an ARM system for the profiling and the beagleboard in specific. The ARM architecture was picked as it is frequently used for mobile devices and future netbooks and that is the target for QtWebKit. The beagleboard was selected as it provides full access to the hardware (serial, JTAG), the tools are freely available (gcc, gdb, [http://openocd.berlios.de OpenOCD]), the Linux OMAP community has created good support for the SoC and is following mainline (in contrast to a horrible vendor port), the Cortex-A8 will be used in many future devices and the price of the beagleboard is quite low. One problem with the Cortex-A8 is that it might be too fast compared to previous ARM cores (e.g. VFP-3 fpu, Neon co-processor, bigger cache size, higher clock) but the above opportunities have outweightes this.
     20
     21
     22=== Tool selection ===