Re: [Dnsmasq-discuss] Slow DHCP Performance with 7500 Static Reservations

2011-06-15 Thread Ed W
On 15/06/2011 09:29, Simon Kelley wrote: > Jan's valgrind suggestion is a good one, as is using netstat to look at > the size of socket receive queues. Although if he can show that a rack reboot works with 200 leases and not in an identical setup with 7,000 leases then it might point to the softwa

Re: [Dnsmasq-discuss] dnsmasq doesn't reply to client requests after dhcp-host changed

2011-06-15 Thread Simon Kelley
Hoang Nhi Nguyen wrote: > Problem: client xyz requests an address, dnsmasq gives it an IP, say > 192.168.1.1. My dnsmasq is configured so that after giving out that > address to the client, "dhcp-host=192.168.1.1,xyz" is added to the > configuration file. Now if I change that line to a new IP addr

Re: [Dnsmasq-discuss] Slow DHCP Performance with 7500 Static Reservations

2011-06-15 Thread Simon Kelley
Mike Ruiz wrote: > Hello All, > > We use dnsmasq as a very effective replacement for the ISC software, > thus far with great success. However, we have run into occasional > performance problems at scale. > > These seem to manifest as a general slowdown of the request -> reply > process, which can

[Dnsmasq-discuss] dnsmasq doesn't reply to client requests after dhcp-host changed

2011-06-15 Thread Hoang Nhi Nguyen
Problem: client xyz requests an address, dnsmasq gives it an IP, say 192.168.1.1. My dnsmasq is configured so that after giving out that address to the client, "dhcp-host=192.168.1.1,xyz" is added to the configuration file. Now if I change that line to a new IP address, say "dhcp-host=192.168.1.2,