Messages in this thread | | | Date | Wed, 10 Feb 1999 21:32:19 +0100 (CET) | From | Riccardo Facchetti <> | Subject | Re: Tuning for a Specific Purpose |
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On Wed, 10 Feb 1999, Shackelford, Alan wrote:
> expensive RS6000/AIX machines with Intel Linux. The machine is: > Intel Pentium II 350 MHz. > 128 MB SDRAM > 1 8GB IDE HD > 1 4GB IDE HD > Aha2940UW SCSI Card > 1 9GB Seagate Wide SCSI Drive > most improtantly, Linux 2.2.1 kernel on a Slackware 3.6 base
[...]
> I realize I have to improve the disk situation, but can you recommend any > specific things to tweak in the kernel that might push this box just a tad > faster?
Maybe RAID0 the three disks ... make 3 partitions of 4GB and make a 12 GB RAID0. You will sum up the speed of all the three disks (not really sum exactly but you should find a speed around 18 - 20 MB/s on the RAID0 if you sum 7 MB/s for the IDE * 2 + 7 for the SCSI).
That's not bad for a database disk subsystem: 12 GB at 20 MB/s
For security of data you can even make a series of 4 or 5 equally big RAID0 partitions and then RAID5 all them up so you gain the speed of RAID0 and the security of RAID5.
Kernel is alredy capable of doing RAID 0/1/4/5.
The improvements on disk performance and/or security are guaranteed.
Ciao, Riccardo.
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