Linked by Thom Holwerda on Sun 23rd Apr 2006 16:35 UTC, submitted by Mark
Linux "Why tune my system? This is probably the first thing you want to know. When a distribution is packaged and delivered to clients, it is designed to be fully compatible with most of the computers available in the market. This is a very heterogeneous set of hardware (hard disks, video cards, network cards, etc.). So distribution vendors like Red Hat, SuSe, Mandriva and the rest of them choose some conservative configuration options to assure a successful installation. For instance, probably you have a very advanced hard disk with some special features that are not being used due to standard configuration settings. To summarize: your Linux distribution goes well... But it can go even better!"
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RE: Sata instead of hdparm
by billnvd on Sun 23rd Apr 2006 18:04 UTC in reply to "Sata instead of hdparm"
billnvd
Member since:
2006-02-04

Timing cached reads: 2808 MB in 2.00 seconds = 1403.51 MB/sec
Timing buffered disk reads: 242 MB in 3.00 seconds = 80.65 MB/sec

I was thinking the same about your numbers. I guess two cheap ass $40.00 ata100 WD's on software raid provide better bang for the buck. Add $70 for a Semprom64, a $40 for a k8u/x and $50 worth of Ballistix. 240 bucks! Hope you did not spend more!

Seriously though, raw numbers like provided by hdparm are pretty useless about how the system will feel to a user. Not long ago, I was running a Athlon MP2400 dual rig. It used ECC/pc2100 ram and only had buffered reads around 500 MB/sec and raw reads around 40 MB/sec(HW RAID Mirror). It felt far faster than this rig, Cost a crap load more too!

So, even with 1/3 the Mem BW and 1/2 the disk reads, the dual made this thing seem slow. Of course, it was noisy, hot, and pricey. It is now someone elses problem. This rig is quiet, cool and affordable.

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