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[Sks-devel] Questions regarding blocking with regards to stats generatio

From: Pete Stephenson
Subject: [Sks-devel] Questions regarding blocking with regards to stats generation & gossip
Date: Sat, 02 Aug 2014 22:06:03 +0200
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0

Hi all,

I was reviewing the mailing list archives recently and had a few questions:

1. From what I've read, generating DB stats block the DB and SKS does
not respond to search/submit queries while the generation is ongoing.

What happens to queries during the blocking period? Are they rejected or
dropped? Do they hold waiting for the DB to come back online?

In my case, the server is using Apache as a reverse proxy. It uses an
SSD for storage, so stats generation takes <5 seconds or so. Is it
problematic to generate stats more frequently than once per day?

2. SKS can only gossip with one peer at a time. Additional gossip
traffic made while the server is gossiping with another peer fail and
must be retried.

Is there some optimal number of peers that a server should have that
would balance between increasing the degree of interconnection and
gossip collisions? Is there a critical number of peers beyond which
collisions become an issue?


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