Multiple Load Points

For AnandTech Database Benchmarks, we have always focused on "real world" Benchmarks. To achieve this, we have used real applications with loads such that CPU utilization was 80-90%. Recently we discussed how most Enterprise Database Servers do not average 80-90% CPU utilization, but rather something closer to the 30-60% range. We thought it would make more sense to show performance where it is most likely going to be used, as well as the saturation numbers for the situations where the CPU is maxed. We feel this is consistent with how GPUs are reviewed, and how you might test drive a car. With GPUs, the cards are tested with varying resolutions, and anti-aliasing levels. With a car, you don't just hit the highway and see what the top end is.

We settled on six load points for testing. These load points are consistent across all platforms and are throttled from the client, independent of the platform being measured. We chose these load points as they split the load range into 6 roughly equal parts and allow us to extrapolate data between the points. The last/highest load point is a "saturation plus" load point to verify that we tested up the capability of the CPUs.

For any given load point, there is a defined number of threads. Each test is 20 minutes in duration, which includes an 8 minute warm up period followed by a 12 minute measured period. For a given load point, the client submits requests to the DB server as fast as the DB server will respond. The rate which the client is able to submit requests is measured during the final 12 minutes of the test and averaged to determine the Orders/Minute for Dell and Transactions/Minute for Forums. After much blood, sweat, and almost tears we were able to produce repeatable loads with an average deviation of 1.6%.

For each platform we ran the test 5 times for each load point and then averaged the 5 results. This was repeated for all loads, all tests, on all platforms... that is 300 test executions!!! (We won't even get into the debugging issues we had to deal with prior to the final results.) Thankfully, we managed to automate the process as much as possible when implementing the throttling mechanism for the load points.

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  • bwmccann - Thursday, July 13, 2006 - link

    It is about time to see some benchmarks on Woodcrest. This is a victory for Intel in the dual cpu server market. It will be interesting to see how much market share they will be able to take back since losing some to AMD last year. I'm also happy to see that Intel has a roadmap for the future and with their history i'm sure they will be able to produce results.

    However on the other hand AMD is not going to stand still. The Opteron is an amazing chip and still leads in servers with more then 4 CPUs. You can bet they are working hard to one up this release. Unfortunately they have to deal with Conroe coming out on the client side later this month and it could start to stretch AMD resources thin. I can't wait for the upcoming battle!!!
    Reply
  • Calin - Thursday, July 13, 2006 - link

    From now on, AMD will compete (in new servers) mostly on price (at least after the point Intel will be able to produce the new microprocessors in enough quantity). For existing installations, they could be able to sell new servers "like the existing ones".
    This is very bad news for AMD
    Reply
  • bamacre - Thursday, July 13, 2006 - link

    Go, Intel go! Reply
  • JackPack - Thursday, July 13, 2006 - link

    Murder, AMD wrote. Reply
  • coldpower27 - Thursday, July 13, 2006 - link

    :cheers: Yay Go Intel!!! Woot!! Amazing!!! Reply
  • duploxxx - Thursday, July 13, 2006 - link

    lol, that's a nice comment you give. you probably didn't look so well at the real charts.

    Nice setup again, but comparing a 2,6 to 3,0 it is normal that a 3,0 will have the performance crown looking at the new architecture. however if you look at the performance gain from 2,4 to 2,6 on the opteron and recalculate it to 3,0 you will see almost equal performance. so your thread start "birth of the new king" is not so clear to mee. Yes you can state that intel will have a 3.0 and AMD not at the moment.... but ehhh where are the woodcrests at the moment in the field.... yes none, i only have Eng Samples and backorders till end-august. So this is a big paper launch.

    one missing point in your article... you clearly define the setup here with decent systems but what i am missing is the amount of dimms used... calculating this in performance can give a difference up to 25watt = 10%.

    i really want to see your follow up on the windows platform....
    Reply
  • ruprecht - Thursday, July 13, 2006 - link

    Of course many people are sad to see "plucky underdog" AMD be beaten by the Giant Intel, but this is really to be expected and, in fact, it's no bad thing.

    I say that for 2 reasons. First, new architectures are (generally) better than old ones and it's time for CPU technology to move a step ahead.

    AMD has been king of the hill for about 2 years. That's quite a long time, and in that time K8 has really come to the end of it's life span (at least as a top of the range chip). So it's no surprise that the first really new architecture since K8 hit the scene is going to be a lot better than what we have at the moment.

    There's really going to be nothing much that AMD can do in the single and dual-core arena to counter Core 2 until early next year at best. It sucks for AMD but that's life. They'll survive OK for a few months in second place.

    Secondly, AMD needs the competition from Intel as much as Intel needs the competition from AMD. I have an FX51 box which I bought almost 3 years ago. The CPU runs at 2.2Ghz, it has 2GB of DDR 400 RAM and a pair of Raptors in a RAID 0 array. Despite being 3 years old it's still pretty fast.

    My point here is that up until recently, if you were building a new AMD rig you would probably not have been buying a CPU or RAM that was a whole lot faster that what I have in my PC. So in almost 3 years AMD has only increased the speed of its processors incrementally. Although admittedly it did go dual core with much more success than Intel. AMD needs Intel to push it to do better. If they had K8L ready today, would they have lost the crown?

    So AMD are now in second place, but it's going to be very interesting to see what happens in the next 6 months or so, and also let's enjoy the benefits that the new architecture(s) are going to bring to us all!
    Reply
  • JackPack - Thursday, July 13, 2006 - link

    1. Performance scaling is not linear. I'm not sure how you can determine Opteron 3.0 performance by looking at only 2.4 and 2.6.

    2. I guess you don't live in America? The ship dates are very reasonable. Not "end-august" as you suggest.
    http://h71016.www7.hp.com/dstore/ctoBases.asp?Prod...">http://h71016.www7.hp.com/dstore/ctoBas...1&Fa...
    Reply
  • duploxxx - Thursday, July 13, 2006 - link

    wel you forgot to read the whole page.....

    HP is not responsible for delays outside of our immediate control, including delays related to order processing or unexpected increase in demand. Typically only orders paid for by credit card receive credit approval on the same day the order is placed. Orders delayed due to order processing will default to an Estimated Ship Date 30 days from the date credit is processed and the order is released. Estimated Ship Dates are based on any known extended lead times.
    Reply
  • Accord99 - Thursday, July 13, 2006 - link

    It says the same thing for their Opteron servers.

    Newegg has the 5150 Woodcrest for sale:

    http://www.newegg.com/Product/Product.asp?Item=N82...">http://www.newegg.com/Product/Product.asp?Item=N82...
    Reply

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