On 04.12.2010 23:11, Blue Swirl wrote:
On Thu, Dec 2, 2010 at 1:12 PM, Kirill Batuzov<[email protected]> wrote:
Move the last found TB to the head of the list so it will be found more quickly
next time it will be looked for.
Signed-off-by: Kirill Batuzov<[email protected]>
Signed-off-by: Pavel Yushchenko<[email protected]>
---
This patch appeared during investigation of performance issues with
S5PC110 emulation for Samsung. It increses OS startup speed significantly.
The patch looks reasonable, but I didn't see any visible difference in
my tests. Could you report your numbers?
The exact numbers depend on complexity of guest system.
- For basic Debian system (no X-server) on versatilepb we observed 25%
decrease of boot time.
- For to-be released Samsung LIMO platform on S5PC110 board we
observed 2x (for older version) and 3x (for newer version) decrease of
boot time.
- Small CPU-intensive benchmarks are not affected because they are
completely handled by 'tb_find_fast'.
We also noticed better response time for heavyweight GUI applications,
but I do not know how to measure it accurately.
----
Kirill.
