[Q] Why is I/O so poor on my Alpha?

[Susan Rodriguez <SUSROD@xxxxxxxx>]

Here is my configuration:

DEC Alpha 4100
	- Digital Unix 4.0d patch kit 3
	- 4 CPUs 500MHz
	- 4 GB RAM
	- Swap at 8 GB in overcommit mode
	- 300 GB disk (EMC fast-wide in RAID 5 config)

Filesystem
	UFS
	Using LSM to stripe fs's across 4 controllers

Kernel
	maxusers 1024
	max-proc-per-user = 2048
	max-threads-per-user = 2048
	max-per-proc-stack-size = 33554432
	max-per-proc-data-size = 3221225472
	max-per-proc-address-space = 3221225472
	vm-maxvas = 2147483648
	ubc-minpercent 30%



My problem:

Creating new oracle tablespaces is incredibly slow.  This could be something
set inside oracle, but where else might I look on my side for an I/O
bottleneck?  I run iostat and volstat, but don't find the results very
meaningful.

I keep thinking I must be missing something in the kernel, but I don't see
what it is.

Any ideas?

I will summarize.  Thanks.

susrod@xxxxxxxx

>  -----Original Message-----
> From: 	Carol Duncan  
> Sent:	Wednesday, October 06, 1999 7:59 PM
> To:	Susan Rodriguez; Karson Cheung
> Cc:	Carol Duncan
> Subject:	ts status
> 
> it took 1hr 8min to create datafiles with total size of 14G for 1
> tablespace
> 
> fyi--
> carol