
Inhoudsopgave SETI@Home hitparades week 29

- DPC SETI@Home hitparade van 15 juli 2012
- DPC SETI@Home hitparade van 16 juli 2012 *
- DPC SETI@Home hitparade van 17 juli 2012
- DPC SETI@Home hitparade van 18 juli 2012
- DPC SETI@Home hitparade van 19 juli 2012
- DPC SETI@Home hitparade van 20 juli 2012
- DPC SETI@Home hitparade van 21 juli 2012
There has been all kinds of slow shuffling behind the scenes lately, but the bottom line is: paddym is now our new master science database server, having taken over all duties from oscar! The final switchover process was over the past few days (hence some minor workunit shortages) and had the usual expected unexpected issues slowing us down yesterday (a comment in a config file that actually wasn't acting like a comment, and some nfs issues).
What we gain using paddym is a faster system in general, with more disk spindles (which enhances read/write i/o), a much faster (and more usable) hardware RAID configuration, and most importantly a LOT more disk space to play with. We have several database tables that are actually fragmented over several tables - now we have the extra room to merge these tables together again (something that several database cleaning projects have been waiting on for months). And, the extra disk i/o seems to help - a full database backup yesterday took about 7 hours. On oscar it usually took about 40.
So that's all good news, and thanks again to the GPU User's Group gang who helped us acquire this much needed gear! And lest we forget as an added bonus we now have oscar up for grabs in our server closest - it will become a wonderful compute server, among other things.
Meanwhile our mysql replica database on jocelyn has been falling behind too much lately. It's swapping, so I've been adjusting various memory configuration variables and trying to tune it up. I'm thinking this is becoming a new issue as, unlike the result and workunit tables which are constanly churning and roughly staying the same size, the user and host tables slowly grow without bounds. Maybe we're starting to see the useful portions of the database not fitting into memory on jocelyn anymore...
- Matt
[ Voor 53% gewijzigd door nl1klb op 17-07-2012 13:52 ]
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