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authorAlexander Couzens <lynxis@fe80.eu>2018-05-12 16:52:59 +0200
committerHarald Welte <laforge@gnumonks.org>2018-05-15 20:54:54 +0000
commitd1f4095df8d8591c938a1bd8bf67d9b42f74b58c (patch)
tree730a5bcb25076fad7d4cca32ed0b44e3aacee33c
parent5844d5b2eca10b6c2f76db46c81f11fc241fec00 (diff)
ttcn3-tcpdump-start.sh: reduce snaplen of tcpdump
Improve speed of tcpdump startup. -s 0 sets the snaplen is 256k. tcpdump will request the snaplen multiplied by the buffer as a contigous buffer in the kernel. This could lead to higher start time. Change-Id: I8a372e71798b366faa3b723573c60de6e8fd128f
-rwxr-xr-xttcn3-tcpdump-start.sh4
1 files changed, 2 insertions, 2 deletions
diff --git a/ttcn3-tcpdump-start.sh b/ttcn3-tcpdump-start.sh
index 7321b52..395941d 100755
--- a/ttcn3-tcpdump-start.sh
+++ b/ttcn3-tcpdump-start.sh
@@ -20,7 +20,7 @@ if [ "$(id -u)" = "0" ]; then
else
CMD="sudo $TCPDUMP"
fi
-$CMD -U -s 0 -n -i any -w "$TTCN3_PCAP_PATH/$TESTCASE.pcap" >$TTCN3_PCAP_PATH/$TESTCASE.pcap.stdout 2>&1 &
+$CMD -U -s 1500 -n -i any -w "$TTCN3_PCAP_PATH/$TESTCASE.pcap" >$TTCN3_PCAP_PATH/$TESTCASE.pcap.stdout 2>&1 &
PID=$!
echo $PID > $PIDFILE
@@ -31,7 +31,7 @@ ping 127.0.0.1 >/dev/null 2>&1 &
PID=$!
i=0
while [ ! -f "$TTCN3_PCAP_PATH/$TESTCASE.pcap" ] ||
- [ "$($TCPDUMP -r "$TTCN3_PCAP_PATH/$TESTCASE.pcap" 2>/dev/null | wc -l)" -eq 0 ]
+ [ "$(stat -c '%s' "$TTCN3_PCAP_PATH/$TESTCASE.pcap")" -eq 32 ]
do
echo "Waiting for tcpdump to start... $i"
sleep 1