| #!/bin/bash |
| # This script generates large function intended to |
| # cause as many iTLB misses as possible. |
| |
| # Number of instructions: |
| # 4k - page size |
| # x 64 - supposed number of TLB entires |
| # x 2 - executing a function sized page_size * tlb_entry_count multiple |
| # times would cause tlb misses only on the first call and tlb entries |
| # would be valid for each next call. Doubling the size of the function |
| # guarantees invalidating tlb entires and thus causing tlb misses. |
| |
| echo "void iTLB_bechmark_function() {" |
| echo " int a = 0, b = 0;" |
| |
| for (( c=0; c < (1 << 18) ; c++ )) ; do |
| echo " a = b + 1;" |
| echo " b = a + 1;" |
| done |
| |
| echo "}" |
