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[Sks-devel] Moving SKS to a different host

From: Tyler Schwend
Subject: [Sks-devel] Moving SKS to a different host
Date: Sun, 03 Aug 2014 09:03:13 -0400
User-agent: K-9 Mail for Android

Building the sks database from a dump takes a very long time, a lot of disk 
space, and a lot of CPU. Is there a way to just move the whole BDB from one 
host to another? I am switching hosts.

On August 3, 2014 4:16:22 AM EDT, address@hidden wrote:
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>Today's Topics:
>   1. Questions regarding blocking with regards to stats       generation
>      & gossip (Pete Stephenson)
>   2. (David Benfell)
>   3. Re: (Daniel Austin)
>   4. Re: (David Benfell)
>   5. Re: (David Benfell)
>   6. Re: Questions regarding blocking with regards to stats
>      generation & gossip (Yaron Minsky)
>   7. Rationalization (Was: Questions regarding blocking ...)
>      (Kiss Gabor (Bitman))
>   8. Re: Rationalization (Was: Questions regarding blocking ...)
>      (Robert J. Hansen)
>Message: 1
>Date: Sat, 02 Aug 2014 22:06:03 +0200
>From: Pete Stephenson <address@hidden>
>To: address@hidden
>Subject: [Sks-devel] Questions regarding blocking with regards to
>       stats   generation & gossip
>Message-ID: <address@hidden>
>Content-Type: text/plain; charset="iso-8859-1"
>Hi all,
>I was reviewing the mailing list archives recently and had a few
>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
>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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>Date: Sat, 2 Aug 2014 15:06:43 -0700
>From: David Benfell <address@hidden>
>To: address@hidden
>Subject: [Sks-devel]
>Message-ID: <address@hidden>
>Content-Type: text/plain; charset="us-ascii"
>Hi all,
> is down and it is taking me much longer
>than anticipated to bring it back up.
>I have been having severe performance issues on the server in
>Munich and am moving to a new, bigger server, closer to home, in
>Sebastopol, (Northern) California.
>I am also changing operating systems. I noticed that FreeBSD runs
>in much less memory and am discovering that its job scheduling is
>much more to my taste.
>The bad news is that when I try to build the sks database from the
>dump from the old system, I get a segmentation fault. I am rebuilding
>nearly every piece of software on the system (there were other
>issues as well that made an upgrade from 10.0-RELEASE advisable) and
>hoping I can make this go away.
>If anyone else has encountered this, what did you do to fix it?


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