Re: Bad network/file access performance

On Tue, Jul 01, 2003 at 11:49:46PM +0200, Mattias Karlsson wrote:
> Hi,
> 
> I've been searching for the probably cause for a while now, and I
> now give up.  This is my setup:
> 
> SERVER
> 	Intel P3 500MHz
> 	224MB RAM
> 	4GB IDE disk for / and swap
> 	3Com 3c905B-TX 10/100 Ethernet (rev. 0x30)
> 	Promise Ultra100TX2/ATA Bus Master IDE Accelerator (rev. 0x02)

BTW, I just commited a fix for performances on Ultra/100, but it shouldn't
hurt you that way.

> 		wd1 at pciide1 channel 0 drive 0: <IC35L080AVVA07-0>
> 		wd1(pciide1:0:0): using PIO mode 4, Ultra-DMA mode 5
> 		(Ultra/100) (using DMA data transfers)
> 
> 		wd2 at pciide1 channel 0 drive 1: <IC35L100AVVA07-0>
> 		wd2(pciide1:0:1): using PIO mode 4, Ultra-DMA mode 5
> 		(Ultra/100) (using DMA data transfers)
> 
> 		wd3 at pciide1 channel 1 drive 0: <Maxtor 6Y200P0>
> 		wd3(pciide1:1:0): using PIO mode 4, Ultra-DMA mode 5
> 		(Ultra/100) (using DMA data transfers)
> 	OS: NetBSD 1.6.1



>   Bits/second sent :     23688624  (23.69 Mbit/s)
> 
> ^-- A *lot* of stalls and no stable transfer rate.

Maybe a tcpdump from the server would help us understand what's going on.

-- 
Manuel Bouyer <[email protected]>
     NetBSD: 24 ans d'experience feront toujours la difference
--