<br><br><div class="gmail_quote">On Mon, Feb 21, 2011 at 11:49 AM, Andreas Raab <span dir="ltr"><<a href="mailto:andreas.raab@gmx.de">andreas.raab@gmx.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
On 2/21/2011 1:31 PM, Miguel Cobá wrote:<br>
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El lun, 21-02-2011 a las 19:25 +0100, Michael Haupt escribió:<br>
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Hi,<br>
<br>
at HPI, we have a SqueakSource with a GemStone backend. The only downtimes we experienced were due to necessary maintenance.<br>
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<br>
I think the number of users that hit <a href="http://squeaksource.com" target="_blank">squeaksource.com</a> vs HPS's own<br>
everyday is a key factor in the perceived performance and net uptime of<br>
each installation.<br>
</blockquote>
<br>
It's not. We used SS at Teleplace at first and it died every other day due to heavy commit/update frequency. When we switched to Gemstone we never had these problems again. The problem with SS is that it has very poor concurrency control. It just trips over its own feet when several people commit and update at the same time. I was actually looking at fixing these problems at first only to realize that SS was clearly designed as a single-user system with very little thoughts being put into where and how concurrency plays a role in various operations.<br>
<br>
When we switched to Gemsource, these problems went away (though I'm not fully sure why). But they did get replaced with others, most notably the problem of our entire source code being locked in a system that we would be unable to access if our license ever expires. And although we had a sweet deal with Gemstone, due to the sweetness of the deal this happened every six months and a couple of times in critical release situations. After it happened once too many it was deemed to be no longer acceptable and we switched to a simple WebDAV based repository. Which has served us well.<br>
</blockquote><div><br></div><div>Doesn't the change to licensing of GemStone/S change things? <a href="http://www.gemstone.com/products/gemstone">http://www.gemstone.com/products/gemstone</a>. Now GemStone/S is free up to 16GB. Dale, Martin, care to comment?</div>
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Cheers,<br><font color="#888888">
- Andreas<br>
<br>
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