[Swift-devel] passive workers scheduler throttle

[Mihael Hategan]

trunk cog r3179/swift r4816 supports the ability to scale the throttle
for a site based on the number of workers running on a site.

To enable it you need to have the passive worker manager and the
globus:throttleTracksWorkers profile set to "true". E.g.

    <profile namespace="globus" key="workerManager">passive</profile>
    <profile namespace="globus"
key="throttleTracksWorkers">true</profile>

One thing to mention is that while the throttle will match the number of
workers, it will never go below 1. That one job is needed to
start/connect to the service in the current scheme of things.

One other thing to mention was that there was a bit of trouble with
passive workers losing a connection to the service. It would typically
result in the jobs that were running on the lost workers to appear to
never complete. That has now been fixed.

Mihael