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Comments:
<0> peerce, ever compserf?
<1> Unify; oh, and lets see, the qlogic fiberchannel HBA drivers in 2.4.x have no way of adding new LUNs without a reboot
<0> amazingly, you don't have to anymore?
<0> my how technology changes.
<0> if sun actually deployed linux with these "SAN" technologies
<0> those problems you are finding might disappear after a version or two!
<1> and linux still has multiprocessor scalling problems that the 'real' unix systems don't.
<0> or wait, were we stuck changing the RLL interleave for the rest of our life?
<0> see, gibson research
<0> and i'm not dismissing your points.
<0> i'm saying that your points are valid, and could be addressed easily with a little time. and probably rolled back into the "linux" community at some point.
<1> our 'ODS' database in singapore hasn't been rebooted since july.
<1> [solaris]
<0> yet it's common operation to IPL mainframes monthly.
<0> uptime is no measure of computing excellence.
<0> it's a penis size.
<2> slowaris, the fastest tank down the internet hightway
<1> problem is, our databases are 24/7 manufacturing. when they are rebooting, the factory is stopped.
<2> is x86 slowaris faster than sparcs slowaris?
<0> why don't you have redundancy?
<1> and the factories have been running 3 shifts 7 days for the past year
<0> we sync our database chi to ny (oracle) daily.
<0> not daily, constantly.
<0> got bandwidth?
<1> the key line support server has a shadow on an identical database which is synched, but a failover is a major event and usually causes 15 minutes of downtime
<1> lets see, 4 GB of new data inserted hourly.
<1> so that 15 minutes means about 500MB of data backlogs in the queues.
<0> 1000g == cheap.
<0> asdl;fsadf
<0> 1g == cheap.
<0> 1000g == boo typo.
<0> bandwidth is cheap.
<0> data is not.
<1> the current servers can barely run at twice the production datarate.
<2> peerce, hows your back doing these days?
<1> chamois; its fine
<2> no pains?
<2> no aches?
<0> this is not 1995 when a T1 was the pinnacle of data networking.
<1> nah, i had some aches the other day, i think it was from a bit of dehydration more than anything
<0> and a DS3 made you GOD!
<1> Unify; try redundant gigabit everywhere in the datacenter
<0> 10GE baby.
<1> but only about 2 DS3's from asia to the US
<0> if you are in the DC.
<1> thats 4GB/hour of complex data being inserted and processed in oracle.
<1> the current database servers are 32 CPU domains on E10000s, which are way past end of life
<0> how do you back that much data up?
<1> back up? its all realtime
<1> we only keep it for about a month max and its aged out.
<0> so you already have an opening.
<1> most lasts a day or 3
<0> vulnerable.
<1> its shadowed on a 2nd identical server in a alternate datacenter (same campus, differnet building, power, hvac)
<1> the digested back end data is sent off to a EDW back in the USA
<0> sounds fun.
<0> i move data from 9:30 to 4.
<0> back office doesn't have the 24x7 demands that 9:30 to 4 does.
<1> this is manufacturing data, all thats in the servers is WIP (work in progress)
<0> no less important, just more processing.
<1> once we've shipped the widgets, we're done.
<0> ya trades are WIP
<0> and we hae to keep them
<0> per SEC
<0> and clean them.
<1> yes, but a trade is how many kilobytes?
<0> and communicate them to the clients so they know their position.
<1> a singel factory event can be 300k of complex typed data.
<0> how many trades?
<0> millions?
<0> economies of scale.
<1> sure, and we only have a million or so events a day in one factory, but they are much more complex.
<0> you mean i don't have to figure out commision costs on a trade?
<0> and they are not straight line computations.
<0> by no means is anything EVER that simple.
<1> how many kilobytes in that transaction?
<0> actually, don't know!
<0> not enough to saturate my pipes.
<1> see, we've got no night shift to cool down and digest and report and backup.
<0> 2.4B on the NYSE today. we probably are responsible for a mere 20m.
<1> its a online realtime stream
<1> 3 shifts a day, all the same.
<1> factory makes widgets, data servers have to monitor and manage that process
<0> it's a lot of data. seems to me you'd have a solution for hot transistion of databases with minor interruptions.
<1> probably 300 or 400 different 'build groups' active at a time, those are different recipes for the widgets.
<0> everyone wants to be up 24x7
<0> things break.
<0> lines go down.
<0> towns go dark.
<0> waitress calls the cops says she saw it all
<0> says a giant alien has landed at the mall!
<1> wait. DGR is around 200K/day, and theres about 50 'events' per widget, so maybe my 1 million events/day was off by a factor of 10...
<1> we've played with schemes for partitioning the data and hot clustering ... trouble is, way too many of the ongoing statistical yield trends calculations cross the partitions no matter how you slice them
<1> and the last time we tried a 'real' cluster with shared storage, the first actual 'failure' that wanteed to failover was caused by oracle datablock corruption which means the failover cluster was ****ed.
<2> DEATH CURES ALL PAIN
<1> hence why we run a mirror server rather than a cl***ic cluster
<2> ok, there's some potential relief
<1> chamois; why, is your back aching or something?
<2> yea i bent over earlier today after sitting in a cold chair for most of the morning and twisted my back just right to prove that the cushions between my vertabrae are indeed breaking down after all thesee ****ING years
<1> chamois; april 1, the advriders are meeting StrikingViking aka Glen, the guy who's been riding around the world, in TJ, then on the 2nd, they are coming back over the border and going to some BMW dealer sponsored event. don't have all the details yet
<2> hey cool
<2> thats my hood
<1> I'm toying with trying to ride down on the 2nd and meeting them, but thats a LONG fawkin' round trip
<2> i can hang a bit with that
<2> no ****
<2> its an 90 minutes to the border from where i live
<1> Glen writes...
<1> The homecoming party is scheduled for Saturday, April first. For those who want to attend the Tijuana event, we`ll meet at Hotel Pueblo Amigo late Saturday afternoon and tear the local bar apart that night. We`ll cross the border at nine the next morning and meet with the rest of the crew at a location near the border for a ride to Sunday`s event with BMW. Details coming--stay tuned.
<2> HEHEHEHEHE
<2> i know that place
<2> I'M DONW WITH IT
<1> he's been in mexico city the last coupla days... some pix http://www.advrider.com/forums/showpost.php?p=2397824&postcount=2995
<2> damn must be nice
<2> oh dude
<1> after being in africa for the past month where the m***es are starving, thats like heaven.
<1> :D
<2> i notoce with this back pain, it totally dissipates driving 100+ on the highway. FYI
<2> TJ heaven?
<2> hehehehe
<2> funny
<1> heh. windlift
<2> i didnt want to get off my bike tonight
<2> :(
<2> dammit i got jury duty tomorrow
<2> after 5 years of evading it
<1> 9 out of 10 times i've had jury duty, they never called me in.
<3> but you have to come inside
<2> i'm gonna go shut them the **** up
<1> the 10th time, I was excused after one morning
<2> dude, but you still have to show up, right?
<3> every time i got the notice i put on the form I require the state to inform me of my rights of jurry nulification
<3> basicaly you can find a crosswalker guilty of murder
<2> oh well
<1> chamois; I only had to go in that 10th time.
<2> ITZ GREAT TO BE AMELIKAN
<2> peerce, k
<0> brooklyn requires you to do jury duty
<0> one day
<1> the other 9 times, I just dialed the message machine, it said 'dial tomorrow after 6', then the next day said 'pool canceled' or whatever
<2> otherise i can learn my PDA inside out for once
<0> unless you are selected for a jury
<0> then you are good for 4-6 years
<0> i've never heard of anyone cancelled for jury duty in kings cty
<2> with myu luck i 'll get stuck on some murder trial
<0> i was on a panel
<0> i basically told the interviewing lawyer, "usually the truth is somewhere in the middle"
<0> i was not selected from the panel
<3> o good
<0> i was shocked! i figured my middle ofthe road attitude was perfect!
<1> once I told them I don't like lawyers... or cops. :D
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