On 29 January 2018 at 16:48, Anibal Limon anibal.limon@linaro.org wrote:
On 26 January 2018 at 08:14, Steve McIntyre steve.mcintyre@linaro.org wrote:
On Fri, Jan 26, 2018 at 02:04:52PM +0000, Florence ROUGER JUNG wrote:
That's right, at first I used following command and there was some
output to the terminal
iozone $OPT -f /mnt_emmc/tmp/iozone.tmp | tee result.logBut now I redirect output iozone $OPT -f /mnt_emmc/tmp/iozone.tmp > iozone.log 2>&1 performance are better but remain not homogeneous with Lava
OK, that does surprise me. I could imagine that running a test with lots of output to the serial port could slow things down, but if you're redirecting everything then it should be making no difference at all. What kind of variance are you seeing?
I've been working on a long test run definition with a lot of serial console output (Piglit), here is what i found [1], looks like is related to this thread.
Anibal: It is not related - this thread is concerning output from scripts running on the DUT and writing to the DUT filesystem without sending output anywhere else.
Your Piglit report is different - you are reporting activity on the dispatcher (telnet & lava-run). Steve addresses the difference in the paragraph above your reply.
Florence: please provide more information on what variance is actually being seen? The numbers quoted so far are meaningless without the context of what amount of variance is expected and what the numbers actually represent.