Fwd: Problem of DELL PE1600SC's PERC3/SC

[Michael Smith]

Hoping that the LSI folks are watching this list...

  = Mike

Begin forwarded message:

> From: "Joanne huang" <hliuhui at hotmail.com>
> Date: Monday, April 14, 2003  3:02:25 AM US/Pacific
> To: msmith at FreeBSD.org
> Subject: Fw: Problem of DELL PE1600SC's PERC3/SC
>
> Dear Mr. Smith,
>
> Following is my E-mail sent to you just now. But mx1.freebsd.org 
> refused it for not found my server's hostname(www.gztt.net ip: 
> 211.155.23.174). So I had to forward it to you by using another E-mail 
> address. Hope you can receive it. Thank you!
>
> Best regards,
> Jimmy
> ----- Original Message ----- From: Jimmy Leung To: msmith at FreeBSD.org 
> Sent: Monday, April 14, 2003 5:39 PM
> Subject: Problem of DELL PE1600SC's PERC3/SC
>
>
> Dear Mr. Smith,
>
> My name is Jimmy Leung. I'm Chinese. Thanks for your work on the 
> FreeBSD's amr driver!
>
> I installed FreeBSD4.8 on my client's DELL PE1600SC system few days 
> ago. And dmesg displayed the follwoing:
> amr0: <LSILogic MegaRAID> mem 0xfcd00000-0xfcd0ffff irq 3 at device 
> 2.0 on pci1
> amr0: <LSILogic PERC 3/SC> Firmware 1.78, BIOS 3.29, 32MB RAM
> mpt0: <LSILogic 1030 Ultra4 Adapter> port 0xdc00-0xdcff mem 
> 0xfcf00000-0xfcf0ffff,0xfcf10000-0xfcf1ffff irq 5 at device 4.0 on 
> pci1
> ......
> amrd0: <LSILogic MegaRAID logical drive> on amr0
> amrd0: 69356MB (142041088 sectors) RAID 5 (optimal)
>
> Everything seemed ok. But when I used dd to test the transfer rate of 
> the RAID, I got the following:
> dd if=/dev/zero of=tt count=51200
> 51200+0 records in
> 51200+0 records out
> 26214400 bytes transferred in 2.529288 secs (10364339 bytes/sec)
>
> But I got 40059717 bytes/sec on a DELL PE2500's PERC 3/Di. And 
> 21593731 bytes/sec even on my PC with IDE harddisk!
>
> I don't know what cause the low transfer rate problem. On 
> http://people.freebsd.org/~msmith/RAID/ I found only PERC 2/SC, PERC 
> 2/DC, PERC3/DC, PERC3/DCL, PERC 3/QC listed there. Are there anything 
> should be modified in the amr driver to support PERC3/SC? Is it 
> Ultra2, Ultra160 or Ultra320 the difference between PERC2/SC and 
> PERC3/SC? If necessary, would you please use SSH to login to my Server 
> and have a test? I can send you account for that. Hope to receive your 
> reply soon. Thank you very much!
>
> Best regards,
> Jimmy
>
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