I have been using openocd on an older fedora 8 machine and get OK speeds
and responsiveness. Insight debugger indicates a download speed of 11
Kbps when programming to flash (64k). Stepping is reasonably quick even
with watch and/or memory windows open.
However, I have needed to use the same versions of openocd and Insight
on another machine running fedora 12 and it seems noticeably slower even
though the processor is faster and it has more memory. The download
speed is about 4 Kbps and stepping is very slow and almost painful if
there are any watch or memory windows to update between steps. Also,
opening the same size watch window (e.g., var with 256 array elements)
seems to take quite a bit longer.
In other respects the new machine is quite a bit faster, such as general
responsiveness and time to compile programs. The new machine claims to
have usb 2.0 ports. I should also mention that the new machine is 64bit
while the old machine is 32bit. Openocd is compiled for 32bit.
In both cases I am using the olimex-arm-usb-ocd device and using libusb
and libftdi.
I was wondering if anyone can suggest a way to troubleshoot or benchmark
the usb ports on this machine to find out why they are slower than the
old machine when running openocd.
Thanks,
-gene
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