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Seti is down again
perryjay:
Well, now I'm getting the down for maintainance message. Wonder how long this is going to last?
SciManStev:
I would gyess that they would use this down opportunity to do the weekly maintanence backups, so I expect to see it back up in a few hours. They may slide this into a three day outage, depending on what their needs are.
Steve
msattler:
I dunno what the devil is going on.....
Up and down, up and down.
Not a normal outage scenario.
Connectivity to the forums has been very sporadic as well.
msattler:
Matt just posted in tech news.
I'll repost it here because you can get to the forums one minute and not the next......
Ah, the few days back at the lab between Xmas and New Year's... The university assumes nobody works at this time, so the buses aren't running, and so I have to drive into the lab. But of course they are still handing out parking tickets to people without regular parking permits (like myself, who rarely drive to the lab). So I gotta park elsewhere. Anyway...
Except for bruno (the upload server) having fits we were pretty much running smoothly all weekend. However bruno is also the main BOINC back-end administrative server for the SETI@home/Astropulse project, so when it has fits, everything kinda gums up. We couldn't get into bruno remotely (full process table?) so it waited until this morning when Jeff got in and rebooted it.
There was some cleanup after that, and we seemed out of the woods, but we're still having these mysql issues where the database enters these long periods of flushing pages to disk. We all agree that this is largely due to the increased demand (after all the long/short outages over the past two months, and perhaps a bout of short runners). Increased demand means more deltas, which in turn means more fragmented pages. We have these weekly outages to defragment the database, but given the load it's like 3-4 weeks of fragmentation within one week. We're thinking the outage tomorrow will largely fix this, but we're still tuning other stuff in the meantime. We already gave mysql access to more memory, but Bob predicted this wouldn't help, and he was right. He's trying other stuff now.
So the plan is to hang on have just the normal outage tomorrow, then be up (as best we can) the rest of the week and throughout the New Year's Eve weekend. Then in the new year we can really start squeezing these new servers and see what they got.
Oh yeah - I turned off the "resend lost results" for now to reduce the load on mysql. This is temporary.
- Matt
Pizzadude:
I thought this was normal for SETI, have you not been paying attention for the last few months !!!! ;D
(Ducks and runs for cover ....)
--- Quote from: msattler on 27 Dec 2010, 04:45:33 pm ---I dunno what the devil is going on.....
Up and down, up and down.
Not a normal outage scenario.
Connectivity to the forums has been very sporadic as well.
--- End quote ---
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