Message boards :
Technical News :
Balance of the 19 (Aug 04 2011)
Message board moderation
Author | Message |
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Matt Lebofsky Send message Joined: 1 Mar 99 Posts: 1444 Credit: 957,058 RAC: 0 |
Not that it's all bright and shiny, but how about I just report some good news? Looks like we got beyond the issues with the mysql replica on jocelyn. Basically we swapped in a bunch of different qlogic cards (which we had laying around) and one of them seems to be working. We're also using a new fibre cable (this new card had a different style jack so I was forced to do so). So far, so good - it recovered from the backup dump taken this past Tuesday, and currently as I type this sentence only 21K seconds behind (and still catching up best I can tell). Of course, we need to wait and see - chances are still good it may hiccup like before. And also finally there's some non-zero hope in the HE connection issues front: one tech there may have a clue about a router configuration we may need to add/update on our end, though I'm still unsure what changed in the world to break this. I sent them some test results, now I'm just waiting to hear back. You may have noticed some of our backend services going down today. This was planned. The short story is we just plucked 48GB of memory out of synergy (back-end compute server) and added it to oscar (the main science database server). So now oscar has 144GB of RAM to play with - the greater plan being to see if this actually helps informix performance, or are we (a) hopelessly blocked by bad disk i/o, and/or (b) dealing with a database so big that even maxing out memory in oscar at 192GB won't help. In any case, testing on this front moves forward. The more we understand, the more we learn *exactly* what hardware improvements we need. - Matt -- BOINC/SETI@home network/web/science/development person -- "Any idiot can have a good idea. What is hard is to do it." - Jeanne-Claude |
Claggy Send message Joined: 5 Jul 99 Posts: 4654 Credit: 47,537,079 RAC: 4 |
Thanks for the update Matt, Claggy |
mole Send message Joined: 19 Jan 02 Posts: 5 Credit: 32,233,287 RAC: 15 |
Cool Matt, thanks for the update and no so bad news this time. Your efforts and those of others on this project are appreciated. |
Jim_S Send message Joined: 23 Feb 00 Posts: 4705 Credit: 64,560,357 RAC: 31 |
Thanks SO Much for the Good News Update Matt...Also Thanks for the HE update. We (I) Appreciate the Hard WORK that you guys put into Our mutual Hobby/Work. And the updates are nice too... ;-)) I Desire Peace and Justice, Jim Scott (Mod-Ret.) |
soft^spirit Send message Joined: 18 May 99 Posts: 6497 Credit: 34,134,168 RAC: 0 |
That is the kind of science I can understand. Regarding Oscars overload, one question comes to mind: Can the database be split in two.. Science East/Science West for example? May your test work well Matt. Janice |
Byron Leigh Hatch @ team Carl Sagan Send message Joined: 5 Jul 99 Posts: 4548 Credit: 35,667,570 RAC: 4 |
Thanks for the update Matt and thanks to the SETI@home crew for all your long hours of hard work ... Best Wishes Byron. |
Gary Charpentier Send message Joined: 25 Dec 00 Posts: 30969 Credit: 53,134,872 RAC: 32 |
Thanks for the update Matt and i hope the tests are successful. Nice to know where the bottleneck is so we can open up the pipe. |
Jeff Mercer Send message Joined: 14 Aug 08 Posts: 90 Credit: 162,139 RAC: 0 |
Thanks Matt ! Good news at last !! Glad that things are looking better. All my best to you and the crew ! |
kittyman Send message Joined: 9 Jul 00 Posts: 51477 Credit: 1,018,363,574 RAC: 1,004 |
Thank you for all the news bits, Matt. Hope your RAM tests on Oscar are positive, and hope that your info from HE is correct and there may be a fix on the horizon for some unhappy users. Meow! "Time is simply the mechanism that keeps everything from happening all at once." |
James Butler Send message Joined: 26 Jul 11 Posts: 139 Credit: 6,266 RAC: 0 |
thanks for the good news matt fingers crossed they all go well :D:D |
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