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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: hypnoia on May 09, 2018, 01:25:25 AM

Title: Late to the party but finally SSD'd my A3000D
Post by: hypnoia on May 09, 2018, 01:25:25 AM

This AEC-7730A SCSI - SATA bridge was about the price of a decent PC GPU, but sticking a Samsung 860 into my original-owner A3000 is a completely perverse joy.

Now there’s ancient stuff from about 500 floppies from the 80’s and early 90’s that display in seconds, and although its pretty much a Turing machine for some things OS4 it does run Odyssey and Workbench Explorer well enough (it also has a Radeon + one of the last available Mediator 3000D’s, + BigRamPlus / X-Surf-100+USB).

Way overkill but this thing is serious fun to use, like it's 1992 all over again.

Code: [Select]

3.Tiamat_SSD:> Tiamat_Data:Dump/DiskSpeed/DiskSpeed all
DiskSpeed 4.4, OS4 version
Copyright © 1989-92 MKSoft Development
Copyright © 2003-04 Daniel J. Andrea II & Stéphane Guillard
Modified December 2015 by A. W. Wyatt for VP DOS API

------------------------------------------------------------
CPU: 68020  AmigaOS Version: 53.89  Normal Video DMA
Device:      Buffers: 5000

Testing directory manipulation speed.
File Create:          272  files/sec
File Open:            588  files/sec
Directory Scan:     26.33 kfiles/sec
File Delete:          426  files/sec

Seek/Read:          18.87 kseeks/sec

Testing with a 512 byte, MEMF_FAST, LONG-aligned buffer.
Create file:         1.24 MiB/sec
Write to file:       2.79 MiB/sec
Read from file:      2.44 MiB/sec

Testing with a 4096 byte, MEMF_FAST, LONG-aligned buffer.
Create file:         3.60 MiB/sec
Write to file:      32.59 MiB/sec
Read from file:     40.57 MiB/sec

Testing with a 32768 byte, MEMF_FAST, LONG-aligned buffer.
Create file:         3.76 MiB/sec
Write to file:       7.57 MiB/sec
Read from file:      9.57 MiB/sec

Testing with a 262144 byte, MEMF_FAST, LONG-aligned buffer.
Create file:         4.44 MiB/sec
Write to file:       4.46 MiB/sec
Read from file:      5.00 MiB/sec


Title: Re: Late to the party but finally SSD'd my A3000D
Post by: LoadWB on May 09, 2018, 02:01:28 AM

Awesome!  Glad that ACard worked out so well for you.

Title: Re: Late to the party but finally SSD'd my A3000D
Post by: klx300r on May 09, 2018, 03:24:30 AM

@ hypnoia

congrats I remember that feeling when I put a DOM and scsi2sd in my A4000..so sweet and silent and no heat issues:):hammer:

Title: Re: Late to the party but finally SSD'd my A3000D
Post by: dalek on May 09, 2018, 03:56:45 AM

That's not with the onboard SCSI controller is it?  Are you connecting the drive to an controller on an accelerator card?

Title: Re: Late to the party but finally SSD'd my A3000D
Post by: hypnoia on May 09, 2018, 04:36:37 AM

Yes, CSPPC 604e.

Title: Re: Late to the party but finally SSD'd my A3000D
Post by: Chucky on May 09, 2018, 06:24:50 AM

Quote from: hypnoia;839117

Yes, CSPPC 604e.

then why so slow??  I had 29mb/sec on my csppc and SSD

Title: Re: Late to the party but finally SSD'd my A3000D
Post by: hypnoia on May 09, 2018, 02:23:14 PM

Quote from: Chucky;839120

then why so slow??  I had 29mb/sec on my csppc and SSD

Well, I show 40mb/sec with a 4K buffer.  Assuming the buffer alignment to 5K isn't slowing it down too much I've got 138% of your speed.

I'm also testing SFS/02 here as it's DiskSpeed and not SCSISpeed, therefore has all the OS overhead involved-- it's not a raw interface test.

Please post your DiskSpeed numbers and maybe I can tweak the buffers & block size, if there's a problem.  But in real-world access I'm pretty happy.