commit c907b00a096f770942fc2df7507dcf54233a2659 Author: David Fifield david@bamsoftware.com Date: Mon Oct 31 01:26:12 2011 -0700

Let switching experiments write time to a log file. --- experiments/common.sh | 10 ++++++++++ experiments/switching/local-http-alternating.sh | 13 ++++++++++--- experiments/switching/local-http-constant.sh | 12 +++++++++--- experiments/switching/remote-tor-alternating.sh | 12 +++++++++--- experiments/switching/remote-tor-constant.sh | 10 ++++++++-- 5 files changed, 46 insertions(+), 11 deletions(-)

diff --git a/experiments/common.sh b/experiments/common.sh index 632a99b..f788235 100644 --- a/experiments/common.sh +++ b/experiments/common.sh @@ -35,3 +35,13 @@ browser_goto() { ensure_browser_started "$PROFILE" "$FIREFOX" -P "$PROFILE" -remote "openurl($URL)" 2>/dev/null } + +# Run a command and get the "real" part of time(1) output as a number of +# seconds. +real_time() { + # Make a spare copy of stderr (fd 1). + exec 3>&2 + # Point the subcommand's stderr to our copy (fd 3), and extract the + # original stderr (fd 2) output of time. + (time -p eval "$@" 2>&3) |& tail -n 3 | head -n 1 | awk '{print $2}' +} diff --git a/experiments/switching/local-http-alternating.sh b/experiments/switching/local-http-alternating.sh index 5eea428..8e11065 100755 --- a/experiments/switching/local-http-alternating.sh +++ b/experiments/switching/local-http-alternating.sh @@ -1,8 +1,9 @@ #!/bin/bash

-# Usage: ./local-http-alternating.sh +# Usage: ./local-http-alternating.sh [OUTPUT_FILENAME] # -# Tests a download over alternating flash proxies. +# Tests a download over alternating flash proxies. If OUTPUT_FILENAME is +# supplied, appends the time measurement to that file.

. ../common.sh

@@ -10,6 +11,7 @@ PROFILE_1=flashexp1 PROFILE_2=flashexp2 PROXY_URL="http://127.0.0.1:8000/swfcat.swf?facilitator=127.0.0.1:9002" DATA_FILE_NAME="$FLASHPROXY_DIR/dump" +OUTPUT_FILENAME="$1"

# Declare an array. declare -a PIDS_TO_KILL @@ -56,4 +58,9 @@ echo "Start socat." PIDS_TO_KILL+=($!) visible_sleep 1

-time wget http://127.0.0.1:2000/dump -t 0 -O /dev/null + +if [ -n "$OUTPUT_FILENAME" ]; then + real_time wget http://127.0.0.1:2000/dump -t 0 -O /dev/null >> "$OUTPUT_FILENAME" +else + real_time wget http://127.0.0.1:2000/dump -t 0 -O /dev/null +fi diff --git a/experiments/switching/local-http-constant.sh b/experiments/switching/local-http-constant.sh index 1a74aaf..0fed6e4 100755 --- a/experiments/switching/local-http-constant.sh +++ b/experiments/switching/local-http-constant.sh @@ -1,8 +1,9 @@ #!/bin/bash

-# Usage: ./local-http-constant.sh +# Usage: ./local-http-constant.sh [OUTPUT_FILENAME] # -# Tests a download over an uninterrupted flash proxy. +# Tests a download over an uninterrupted flash proxy. If OUTPUT_FILENAME +# is supplied, appends the time measurement to that file.

. ../common.sh

@@ -10,6 +11,7 @@ PROFILE_1=flashexp1 PROFILE_2=flashexp2 PROXY_URL="http://127.0.0.1:8000/swfcat.swf?facilitator=127.0.0.1:9002" DATA_FILE_NAME="$FLASHPROXY_DIR/dump" +OUTPUT_FILENAME="$1"

# Declare an array. declare -a PIDS_TO_KILL @@ -51,4 +53,8 @@ echo "Start socat." PIDS_TO_KILL+=($!) visible_sleep 1

-time wget http://127.0.0.1:2000/dump -t 0 -O /dev/null +if [ -n "$OUTPUT_FILENAME" ]; then + real_time wget http://127.0.0.1:2000/dump -t 0 -O /dev/null >> "$OUTPUT_FILENAME" +else + real_time wget http://127.0.0.1:2000/dump -t 0 -O /dev/null +fi diff --git a/experiments/switching/remote-tor-alternating.sh b/experiments/switching/remote-tor-alternating.sh index 52da3aa..5309dce 100755 --- a/experiments/switching/remote-tor-alternating.sh +++ b/experiments/switching/remote-tor-alternating.sh @@ -1,8 +1,9 @@ #!/bin/bash

-# Usage: ./remote-tor-alternating.sh +# Usage: ./remote-tor-alternating.sh [OUTPUT_FILENAME] # -# Tests a Tor download over alternating flash proxies. +# Tests a Tor download over alternating flash proxies. If OUTPUT_FILENAME is +# supplied, appends the time measurement to that file.

. ../common.sh

@@ -10,6 +11,7 @@ PROFILE_1=flashexp1 PROFILE_2=flashexp2 PROXY_URL="http://127.0.0.1:8000/swfcat.swf?facilitator=127.0.0.1:9002" DATA_FILE_NAME="$FLASHPROXY_DIR/dump" +OUTPUT_FILENAME="$1"

# Declare an array. declare -a PIDS_TO_KILL @@ -52,4 +54,8 @@ PIDS_TO_KILL+=($!) # Let Tor bootstrap. visible_sleep 15

-time torify wget http://torperf.torproject.org/.5mbfile -t 0 -O /dev/null +if [ -n "$OUTPUT_FILENAME" ]; then + real_time torify wget http://torperf.torproject.org/.5mbfile -t 0 -O /dev/null >> "$OUTPUT_FILENAME" +else + real_time torify wget http://torperf.torproject.org/.5mbfile -t 0 -O /dev/null +fi diff --git a/experiments/switching/remote-tor-constant.sh b/experiments/switching/remote-tor-constant.sh index 4f530be..c0d6338 100755 --- a/experiments/switching/remote-tor-constant.sh +++ b/experiments/switching/remote-tor-constant.sh @@ -2,7 +2,8 @@

# Usage: ./remote-tor-constant.sh # -# Tests a Tor download over an uninterrupted flash proxy. +# Tests a Tor download over an uninterrupted flash proxy. If OUTPUT_FILENAME is +# supplied, appends the time measurement to that file.

. ../common.sh

@@ -10,6 +11,7 @@ PROFILE_1=flashexp1 PROFILE_2=flashexp2 PROXY_URL="http://127.0.0.1:8000/swfcat.swf?facilitator=127.0.0.1:9002" DATA_FILE_NAME="$FLASHPROXY_DIR/dump" +OUTPUT_FILENAME="$1"

# Declare an array. declare -a PIDS_TO_KILL @@ -47,4 +49,8 @@ browser_goto "$PROFILE_1" "$PROXY_URL" # Let Tor bootstrap. visible_sleep 15

-time torify wget http://torperf.torproject.org/.5mbfile -t 0 -O /dev/null +if [ -n "$OUTPUT_FILENAME" ]; then + real_time torify wget http://torperf.torproject.org/.5mbfile -t 0 -O /dev/null >> "$OUTPUT_FILENAME" +else + real_time torify wget http://torperf.torproject.org/.5mbfile -t 0 -O /dev/null +fi