NS 3.3 stuttering after zulu scsi install

NeXT Computer, Inc. -> NeXT Black Hardware

Title: NS 3.3 stuttering after zulu scsi install
Post by: Nightengale on August 23, 2023, 02:45:14 PM
Hi I recently installed a zuluscsi and I noticed NS 3.3 stuttering or pausing. It was a pre built image. Is there anything I could be looking out for to correct? Really makes astrloids difficult!
Title: Re: NS 3.3 stuttering
Post by: Nightengale on August 23, 2023, 04:46:55 PM
I don't know what I did except launch soft pc, close it, and also executor and close it, now the stuttering is gone thank goodness
Title: Re: NS 3.3 stuttering
Post by: Nightengale on August 23, 2023, 09:23:38 PM
Stuttering is back. I don't understand why
Title: Re: NS 3.3 stuttering afyer zulu scsi install
Post by: Nightengale on August 23, 2023, 10:57:35 PM
I just installed a zuluscsi into a Nextstation color turbo that has a pre imaged ns 3.3 on it. It's great for the most part, but, every couple of seconds the system stutters. It didn't do that with my original scsi hd that had oS 4.2 on it. It almost seems like it is trying to access something and failing but I have no evidence of that except the stuttering. It's very annoying and probably something simple to fix 🤔

Any ideas what might cause this?
Title: Re: NS 3.3 stuttering after zulu scsi install
Post by: barcher174 on August 24, 2023, 04:52:12 PM
Check the console logs
Title: Re: NS 3.3 stuttering after zulu scsi install
Post by: Nightengale on August 24, 2023, 05:22:13 PM
Baseline time. What are console logs?
Title: Re: NS 3.3 stuttering after zulu scsi install
Post by: Nightengale on August 24, 2023, 07:48:34 PM
I just requested the sellers assistance

Too bad z80s site shut down, seemed friendlier
Title: Re: NS 3.3 stuttering after zulu scsi install
Post by: Nightengale on August 24, 2023, 08:46:14 PM
Hmm stuck my original 4.2 scsi hd in there, no stuttering. My reference is BackSpace Boink-very noticeable slow downs when using the zuluscsi vs stock hd. All other being equal except sellers 3 3 image. 
Title: Re: NS 3.3 stuttering after zulu scsi install
Post by: pTeK on August 25, 2023, 12:55:44 AM
Quote from: Nightengale on August 24, 2023, 05:22:13 PM
Quote from: barcher174 on August 24, 2023, 04:52:12 PMCheck the console logs
Baseline time. What are console logs?
try looking around /usr/adm/ or /private/adm/ on NetBSD it's dmesg(1) but that command brings up a error on NS3.3.

try tail /usr/adm/messages as root
Title: Re: NS 3.3 stuttering after zulu scsi install
Post by: Nightengale on August 25, 2023, 02:52:11 AM
Thank you. Seller let me know some 👍 ideas also.
Title: Re: NS 3.3 stuttering after zulu scsi install
Post by: Nightengale on August 25, 2023, 08:28:50 AM

I am happy to report made a backup of the supplied sd card successfully per Robs suggestion. I couldn't at 1st using os x, kept getting an error don't know why. Then tried on windows and voila no issues. Then i copied over hd0 only to a freshly formatted sd card, put that onto the zuluscsi and all is great! I am so happy with this, it's like magic. I'll work more on this because there's a lot more to do with the other hd images nicely provided. Not sure my approach just yet. Im old, 58, so I'm thinking of buying a applecd 300 cd drive to attach to the external scsi port and hopefully (?) Burning each of the other hd imaged to a cd? I don't know. I bet previous can help here somehow but I'm not too smart on that.

Anyways txs to Rob for all he does for the Next community!!

Cheers
Title: Re: NS 3.3 stuttering after zulu scsi install
Post by: Apple2guy on August 25, 2023, 09:37:48 AM
If the HD image on the SD is not contiguous it can cause slowdowns.
Title: Re: NS 3.3 stuttering after zulu scsi install
Post by: Nightengale on August 25, 2023, 01:44:35 PM
Quote from: Apple2guy on August 25, 2023, 09:37:48 AMIf the HD image on the SD is not contiguous it can cause slowdowns.

I can definitely confirm this Apple2guy.

I've been using my turbo color over a couple decades and not used to all this new jazz. It's unsettling to see such a tightly integrated system have random slowdowns. Steve was spinning in his grave! But, no longer, all is corrected, it's not random, there is a reason, plus so much more capability, done thoughtfully. For better or worse, I've always retreated to Next for a familiar, predictable computer hobby solution in an otherwise chaotic world.
Title: Re: NS 3.3 stuttering after zulu scsi install
Post by: Shiunbird on September 01, 2023, 07:58:44 AM
My HP 712/60 is now on ZuluSCSI.
I can easily dual boot between NS3.3 and HP-UX 10, and the feature of loading ISOs and rotating CD-ROMs works great as well.

It is also bus-powered!

But I only managed to get good performance (perfect performance!) by formatting from the installer. Imaging my existing hpux install ended up in very bad performance. I had both my original disk and my zuluscsi connected to the SCSI bus of my HP C8000 and I used dd from there.
Title: Re: NS 3.3 stuttering after zulu scsi install
Post by: Rob Blessin Black Hole on September 02, 2023, 03:37:11 AM
Hello NeXT Community:  I do not know how I missed this thread !  I'm the seller and I think what may be happening is I'm pushing the envelop on ZULU SCSI as I did on SCSI2SD .... The Image actually has 6 * 2gb partitions I've loaded with tons of NeXT apps. I think the stutter is most likely caused by NeXTSTEP 68K hardware limitations and the bottleneck of mixing modern tech with past tech. Originally to achieve 6 Drives , we would either daisy chain them or have a special External SCSI case. The 4 Bay SCSI Case I bought from MUFON when they closed down their global headquarters here in Fort Collins has 4 cd rom drives in it , which made it fun to copy apps over from different CD's to the main hard drive. I think I would be able to improve the performance quite a bit with the master drive ISO on ZULU SCSI , if I had disktab entries that set up 4 Gb single partitions as we have 32GB extreme pro cards in the ZULU SCSI and I know Openstep can handle the larger partitions .  I want to provide the best product I can and a lot of amazing NeXT apps are now accessible on a small SD card and with a 32Gb Card currently a lot of space goes unused. Also would 1024 Block size verse 512K block size help.....

If anyone would like to help me figure out the fastest solution for ZULU SCSI configuration that would be great .

 We should be able to use the bench mark tools to compare as well.

On a personal note Things are going better for me, I'm still hobbled so I've hired a part time henchman and longtime good friend lol to help out at the Black Hole ; Tom Catlow from the UK. Tom is a retired school teacher and is enjoying working on the NeXT's with me and really helping me to get organized and caught up on orders!

So I'm making a lot of headway on catching up on orders with Tom's help, in the past few weeks = month's of work , like ham and eggs , ha ....

I'm also going to be able to finally set up my little home museum and have it online with lots of cool stuff so please stay tuned as my roommate Todd is moving out.

The future ; WE have been tinkering with the new 3d site Tools , which are improving , when we started a few years ago when the 3d website was in its infancy and now AI s making short work of complicated coding,

We had a NeXT maze that was a hoot to run around in but crashed a lot , years ago , we shall see as this would be fun for the online NeXT museum https://blog.hubspot.com/website/3d-websites
Title: Re: NS 3.3 stuttering after zulu scsi install
Post by: SteveHere on September 03, 2023, 06:50:18 PM
Quote from: Rob Blessin Black Hole on September 02, 2023, 03:37:11 AMI think the stutter is most likely caused by NeXTSTEP 68K hardware limitations

Hi Rob, see Apple2Guys comment above.  The SCSI replacements (ZuluSCSI, BlueSCSI) really don't like it when the image files on the SD card get fragmented it causes performance issues like the one the OP has mentioned.  We never saw with with SCSI2SD because the way those were set up was contiguous by design.

I Bellevue that ZuluSCSI will log an error about this into the log.txt file if it detects any non-contiguous drive image files on the SD card.

I've taken too just reformatting the SD cards pretty much every time I want to copy a new disk image file onto the SD card.  Also, I only copy one file at a time just to make sure I get the files contiguous.  I hope this helps!
Title: Re: NS 3.3 stuttering after zulu scsi install
Post by: Nightengale on September 03, 2023, 10:32:37 PM
What works for me is to boot Robs originally supplied SD card, and drag drop from any of the 6 drives to hd0, then copy that hd0 to my "daily driver" sd card and all is completely super de duper 🙂
Title: Re: NS 3.3 stuttering after zulu scsi install
Post by: Rob Blessin Black Hole on September 05, 2023, 07:18:38 PM
Quote from: SteveHere on September 03, 2023, 06:50:18 PMI've taken too just reformatting the SD cards pretty much every time I want to copy a new disk image file onto the SD card.  Also, I only copy one file at a time just to make sure I get the files contiguous.  I hope this helps!
Hello Steve: Exactly I drag 1 2gb partition at a time after reformatting the sd card and let it fully install then onto the NeXT one. Yes I tried all 6 at once and found out it doesn't work well as you are correct it is fragmented and scsi2sd has predefined 2gb partitions in the XML file so copying the master iso matched the footprint of each partition when completed :)

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