On Wed, Mar 25, 2009 at 7:11 AM, Derek Chen-Becker <dchenbec...@gmail.com>wrote:
> Yeah, the iostat indicates very little disk activity, and since my machine > is running servers for web, email and VPN what I'm seeing could be entirely > unrelated to the build. As a comparison, my laptop (Dell Precision M4300) > with an Intel Core Duo T7700 and 4GB of memory builds in about 8:30. That's > a 32-bit JVM, so maybe I should run 32 bit on my desktop to see if that > makes a difference. My suspicion is that because the Athlon X2 4200+ has no > L3 cache (128K L1, 512K L2) it's having to go to main memory a lot. The > T7700 has 4MB L2 per core and the Phenom has 6MB L3 shared across cores. > > How does my current 7 minute build time compare with other people's > experience? My Core 2 Quad 2.4 Ghz desktop, I have a 7 minute build time (64 bit Ubuntu 8.04) My Core 2 Duo 2.4 Ghz laptop, I have a 7 minute build time (32 bit Windows Vista) > > > Derek > > > On Wed, Mar 25, 2009 at 8:52 AM, David Pollak < > feeder.of.the.be...@gmail.com> wrote: > >> Weird. My 2133 is running at 1.2 Ghz and has an 800Mhz (at best) memory >> speed. My experience with Lift builds on machines with a lot of memory is >> that there's almost no disk access... everything is cached. >> >> >> On Wed, Mar 25, 2009 at 6:32 AM, Derek Chen-Becker <dchenbec...@gmail.com >> > wrote: >> >>> Ubuntu 8.10 x64. Java is >>> >>> java version "1.6.0_12" >>> Java(TM) SE Runtime Environment (build 1.6.0_12-b04) >>> Java HotSpot(TM) 64-Bit Server VM (build 11.2-b01, mixed mode) >>> >>> Here's AMD's rundown of the difference between the CPUs: >>> >>> http://products.amd.com/en-us/DesktopCPUSideBySide.aspx?id=522&id=59 >>> >>> Note that I'm still using the original AM2 motherboard with the same >>> DDR2-800 memory. The fact that it's AM2 means that the Phenom is downgrading >>> its HyperTransport to the same speed as the Athlon X2 for bus access. >>> >>> I suppose I could benchmark it to see how it performs for other tasks. >>> I'm not sure how much an SSD would help. I'll run a build and monitor iostat >>> to see how much data transfer goes to/from the HDDs, but my machine >>> typically runs a file cache of about 800-900MB of memory (6GB total), so I >>> would suspect that most of what maven needs gets sucked into the cache. >>> >>> Derek >>> >>> On Wed, Mar 25, 2009 at 6:38 AM, David Pollak < >>> feeder.of.the.be...@gmail.com> wrote: >>> >>>> Derek, >>>> What OS are you running? The old numbers are worse than my HP 2133 >>>> Netbook which clocks in at 15 minutes for a full Lift build. >>>> >>>> Thanks, >>>> >>>> David >>>> >>>> On Tue, Mar 24, 2009 at 7:42 PM, Derek Chen-Becker < >>>> dchenbec...@gmail.com> wrote: >>>> >>>>> I just wanted to throw this out there in case anyone else is >>>>> considering new hardware. I had an Athlon X2 4200+ powering my dev box >>>>> (6GB >>>>> of ram, 2 x RAID 1 SATA drives) and average build time for a "mvn clean >>>>> install" for the entire liftweb project was roughly 17 minutes and 45 >>>>> seconds. I just upgraded to a Phenom X3 720 (no change in any other >>>>> hardware) and my build times are now about 7 minutes! I'm guessing that >>>>> the >>>>> L3 cache on the Phenom is a huge part of that, but I'm sure that the >>>>> increased clock and newer core are helping a bit. >>>>> >>>>> Derek >>>>> >>>>> >>>>> >>>> >>>> >>>> -- >>>> Lift, the simply functional web framework http://liftweb.net >>>> Beginning Scala http://www.apress.com/book/view/1430219890 >>>> Follow me: http://twitter.com/dpp >>>> Git some: http://github.com/dpp >>>> >>>> >>>> >>> >>> >>> >> >> >> -- >> Lift, the simply functional web framework http://liftweb.net >> Beginning Scala http://www.apress.com/book/view/1430219890 >> Follow me: http://twitter.com/dpp >> Git some: http://github.com/dpp >> >> >> > > > > -- Lift, the simply functional web framework http://liftweb.net Beginning Scala http://www.apress.com/book/view/1430219890 Follow me: http://twitter.com/dpp Git some: http://github.com/dpp --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Lift" group. To post to this group, send email to liftweb@googlegroups.com To unsubscribe from this group, send email to liftweb+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/liftweb?hl=en -~----------~----~----~----~------~----~------~--~---
