| #!/bin/sh |
| # |
| # oe-time-dd-test records how much time it takes to |
| # write <count> number of kilobytes to the filesystem. |
| # It also records the number of processes that are in |
| # running (R), uninterruptible sleep (D) and interruptible |
| # sleep (S) state from the output of "top" command. |
| # The purporse of this script is to find which part of |
| # the build system puts stress on the filesystem io and |
| # log all the processes. |
| |
| usage() { |
| echo "Usage: $0 <count>" |
| } |
| |
| if [ $# -ne 1 ]; then |
| usage |
| exit 1 |
| fi |
| |
| uptime |
| /usr/bin/time -f "%e" dd if=/dev/zero of=foo bs=1024 count=$1 conv=fsync |
| top -b -n 1 | grep -v "0 0 0" | grep -E ' [RSD] ' | cut -c 46-47 | sort | uniq -c |