Johannes Kimmel
87d923c1ef
The default cachesize for dnsmasq is 150 entries, which results in a poor cache hit rate. Raise the default to 1024 to provide better cache hit rates on all devices while still keeping memory usage in check. Further increase the cachesize to 8192 entries for systems with enough ram (currently more than 64MB). The memory usage will increase roughly 100B per entry. The size was chosen empirically. Higher values don't seem to increase cache hit rate a lot. Signed-off-by: Johannes Kimmel <fff@bareminimum.eu> Reviewed-by: Fabian Bläse <fabian@blaese.de>
37 lines
1.0 KiB
Plaintext
37 lines
1.0 KiB
Plaintext
# Use a larger cachesize by default
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cachesize=1024
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# Increase cachesize for systems with enough memory
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mem="$(awk '/^MemTotal:/ {print $2}' /proc/meminfo)"
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[ "$mem" -gt 65536 ] && cachesize=8192
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uci batch >/dev/null <<EOF
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delete dhcp.@dnsmasq[0]
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delete dhcp.lan
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delete dhcp.wan
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add dhcp dnsmasq
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set dhcp.@dnsmasq[-1].domainneeded='0'
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set dhcp.@dnsmasq[-1].boguspriv='0'
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set dhcp.@dnsmasq[-1].filterwin2k='0'
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set dhcp.@dnsmasq[-1].localise_queries='0'
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set dhcp.@dnsmasq[-1].rebind_protection='0'
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set dhcp.@dnsmasq[-1].rebind_localhost='1'
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set dhcp.@dnsmasq[-1].domain='fff.community'
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set dhcp.@dnsmasq[-1].expandhosts='0'
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set dhcp.@dnsmasq[-1].nonegcache='0'
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set dhcp.@dnsmasq[-1].cachesize="$cachesize"
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set dhcp.@dnsmasq[-1].authoritative='1'
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set dhcp.@dnsmasq[-1].readethers='1'
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set dhcp.@dnsmasq[-1].leasefile='/tmp/dhcp.leases'
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set dhcp.@dnsmasq[-1].noresolv='1'
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set dhcp.@dnsmasq[-1].localservice='1'
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set dhcp.client=dhcp
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set dhcp.client.interface='client'
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set dhcp.client.leasetime='1h'
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EOF
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uci commit dhcp
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exit 0
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