busy_poll02.sh 1.1 KB

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  1. #!/bin/sh
  2. # SPDX-License-Identifier: GPL-2.0-or-later
  3. # Copyright (c) 2015-2018 Oracle and/or its affiliates. All Rights Reserved.
  4. #
  5. # Author: Alexey Kodanev <alexey.kodanev@oracle.com>
  6. . busy_poll_lib.sh
  7. cleanup()
  8. {
  9. [ -n "$busy_poll_old" ] && \
  10. sysctl -q -w net.core.busy_poll=$busy_poll_old
  11. [ -n "$rbusy_poll_old" ] && \
  12. tst_rhost_run -c "sysctl -q -w net.core.busy_poll=$rbusy_poll_old"
  13. }
  14. set_busy_poll()
  15. {
  16. local value=${1:-"0"}
  17. ROD_SILENT sysctl -q -w net.core.busy_poll=$value
  18. tst_rhost_run -s -c "sysctl -q -w net.core.busy_poll=$value"
  19. }
  20. setup()
  21. {
  22. busy_poll_check_config
  23. busy_poll_old="$(cat /proc/sys/net/core/busy_poll)"
  24. rbusy_poll_old=$(tst_rhost_run -c 'cat /proc/sys/net/core/busy_poll')
  25. }
  26. test()
  27. {
  28. for x in 50 0; do
  29. tst_res TINFO "set low latency busy poll to $x per socket"
  30. set_busy_poll $x
  31. tst_netload -H $(tst_ipaddr rhost) -n 10 -N 10 -d res_$x -b $x
  32. done
  33. local poll_cmp=$(( 100 - ($(cat res_50) * 100) / $(cat res_0) ))
  34. if [ "$poll_cmp" -lt 1 ]; then
  35. tst_res TFAIL "busy poll result is '$poll_cmp' %"
  36. else
  37. tst_res TPASS "busy poll increased performance by '$poll_cmp' %"
  38. fi
  39. }
  40. tst_run