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2.12. Reduce TCP Performance Spikes
Turn timestamps off to reduce performance spikes related to timestamp generation. The
sysctl command controls the values of TCP related entries, setting the timestamps kernel parameter found at /proc/sys/net/ipv4/tcp_timestamps.
- Turn timestamps off with the following command:
~]# sysctl -w net.ipv4.tcp_timestamps=0 net.ipv4.tcp_timestamps = 0 - Turn timestamps on with the following command:
~]# sysctl -w net.ipv4.tcp_timestamps=1 net.ipv4.tcp_timestamps = 1 - Print the current value with the following command:
~]# sysctl net.ipv4.tcp_timestamps net.ipv4.tcp_timestamps = 1The value1indicates that timestamps are on, the value0indicates they are off.
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