[squid-users] [ext] Netdb. state too big

[Antonino Sanacori]

Many thanks Amos and Ralf,

i have a simple proxy with no proxy hierarchy, then i will set the 
parameter to "none".

Antonino

Il 09/01/2019 14:35, Amos Jeffries ha scritto:
> On 10/01/19 1:54 am, Ralf Hildebrandt wrote:
>>> It is most useful for peer connections where the peer selection
>>> algorithm directly depends on the RTT times.
>> Like reverse proxies?
>>   
> Like weighted round-robin, ICP, HTCP.
>
>
>>> It is also used with persistent connection selection as a small
>>> optimization to prioritize faster connections to be selected for re-use
>>> rather than slower connections. This makes a big difference for servers
>>> operating behind an IP load balancer.
>>>
>>> This feature is always an optional one. In absence of NetDB RTT data
>>> algorithms using it assume that all TCP connections are equally fast.
>> In a "normal" proxy setup (users are behind 4 proxies which connect
>> them to the Internet), does use of Netdb make sense?
>>
> Depends on how focused one is on latency and what RTT differences the
> proxy is detecting. If you don't care about a few ms on some connections
> or the RTT variation between connections to a server is normally under
> 1ms then it can be better to use the memory and CPU cycles for other
> things like cache_mem.
>
>
> Amos
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