[CentOS] DDR2 compile times (was Re: segfaults with 8 gig of ram)
Peter Gross
pag at nanosec.com
Thu Mar 29 14:40:52 UTC 2007
tblader wrote:
> Hello All.
> Below are some compile times for 2.6.20 on an fx-62
> running Centos64 with various 2 gig sticks of
> dual channel ram (See previous posts with subject
> of 'segfaults with 8gig of ram' for more details.)
>
> It seems dual channel will compile a kernel faster,
> but only gained around 30 seconds over 20 minutes.
> Below are the shortest/longest compile times of
> several compiles done over the weekend.
>
> Compile consisted of make menuconfig (save .config)
> time make dep clean bzImage modules
>
>
> 2 sticks dual channel @800mhz
> 10 samples
> ================================
> real 791.46
> user 664.10
> sys 93.85
>
> real 799.88
> user 665.30
> sys 93.87
>
>
> 4 sticks dual channel @400mhz
> 5 samples (before it hurled booting)
> ================================
> real 876.19
> user 712.98
> sys 116.18
>
> real 846.06
> user 710.16
> sys 115.42
>
>
>
> 3 sticks single channel @800mhz
> 6 samples
> ================================
> real 815.74
> user 673.73
> sys 108.30
>
> real 822.95
> user 674.32
> sys 108.62
>
>
I am putting together a pretty high-end workstation and originally had
ordered 2gb sticks. Here's my [main] hardware specs:
Abit AB9 QaudGT motherboard
Intel Core 2 Duo E6600
Seasonic M12 PSU
3 Seagate 250gb SATA II disks
Since my main goal is to run VMWare Workstation with host OS Centos 5
(when it comes out), I was originally interested in using 8gb memory.
But after posting the following thread on the Abit motherboard forums, I
discovered that the Intel P965 Express chipset does not fully support
PC6400 (800) DDR2 memory:
http://forum.abit-usa.com/showthread.php?t=121720
So I returned that memory and went with 4 1gb sticks of low latency
(4-4-3-8) memory instead, trading memory capacity for performance.
More information about the CentOS
mailing list