[OpenWrt-Devel] Toolchain issue: Significant decrease in performance of binaries produced by Barrier Breaker relative to Attitude Adjustment

Matthias Schiffer mschiffer at universe-factory.net
Sat Aug 30 12:45:47 EDT 2014

On 08/30/2014 06:42 PM, Matthias Schiffer wrote:
> Hi,
> I've noticed that the code produced by Barrier Breaker's toolchain
> sometimes has significantly worse performance that that built by
> Attitude Adjustment.
> I can see this extremely with the VPN tool "fastd" developed and
> maintained by me: On the same Barrier Breaker system, a binary built by
> the default Barrier Breaker toolchain (GCC 4.8-linaro) gets about 35%
> less throughput than one built with Attitude Adjustment (GCC
> 4.6-linaro). With the 4.6-linaro toolchain of Barrier Breaker, I still
> get 20% worse performance than with the 4.6-linaro of Attitude Adjustment.
> Do you have any suggestions what I can do to solve or analyze the issue?
> Any compiler flags I should try fiddling with? Optimizing with -Os vs.
> -O3 doesn't seem to make a difference.
> Thanks,
> Matthias

I forgot to tell that this is on ar71xx.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 819 bytes
Desc: OpenPGP digital signature
URL: <http://lists.infradead.org/pipermail/openwrt-devel/attachments/20140830/c9ab53d5/attachment.sig>
-------------- next part --------------
openwrt-devel mailing list
openwrt-devel at lists.openwrt.org

More information about the openwrt-devel mailing list