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# This outputs a graph of time(N), the time it takes to write 1<<N bytes in us.
# e.g. 0 1 2 4 8 16 32
# The last value is for 4M, convert that to MiB/s for comparison
#
# Ideally we want to run this per ring,
# gem_exec_nop:rcs, gem_exec_nop:bcs, gem_exec_nop:vcs
# though for the time being just one will suffice
[ -e $IGT_BENCHMARKS/gem_prw ] || return 1
sudo -n true || return 1
for j in read write; do
for i in cpu gtt; do
test_name="$test_name gem:p$j:$i"
eval "gem:p$j:${i}_run() { sudo $IGT_BENCHMARKS/gem_prw -D $j -d $i -r \$1 ; }"
eval "gem:p$j:${i}_process() { bc -l <<< \" 4*1000000 / \${@: -1} \" ; }"
done
done
test_exec_time=1
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