[Dnsmasq-discuss] How does DNSMASQ handle large concurrent configure file updating request requests

Yongkang You yongkang.you at gmail.com
Wed Jan 14 09:48:57 GMT 2015


Hi,

We have a cloud environment which uses DNSMASQ as DHCP/DNS server; in the
cloud, it usually starts lots of VMs concurrently, for example, 10000 VM;
for each VM, we will configure a static DHCP entry in DNSMASQ configuration
and send SIGUSER1 to reload. we observe DNSMASQ becomes very busy of
reloading, for example, it seems to reload 10000 times if we send for 10000
SIGUSER1.

Is this expected behavior? Is there any way to avoid this? because it keep
reloading, we don't know if this will effect VM getting IP address.

-- 
Yongkang You
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