| Title: | VAX on VMEbus: KAV30 |
| Notice: | Could have been as fast as 68K but its a VAX! |
| Moderator: | CSSVMS::KAV30_SUPP |
| Created: | Thu Apr 18 1991 |
| Last Modified: | Fri Aug 02 1996 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 159 |
| Total number of notes: | 645 |
The KAV30 has been on the market long ehough now and I see increased
interest from OEMs and software houses.
Of course when I talk about ELN, I always tell them the benefits about
software development, high-level languages, the works.
The questions that are always being asked in a serious discussion are:
- What are the numbers for Context switch, average and worst case
- What are the numbers for interrupt latency, average and worst case
In a recent comparison of realtime Kernels on the VME, VAXELN was the
only one that didn't have numbers on these two questions.
Not being able to answer these questions is always a sign of weakness.
Somebody *has* to have made some test around this, but where is the
data ??
Please make these numbers available, even if they look bad against OS9
or pSOS data !!
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 24.1 | BAYERN::WOLFF | Conformism is for little minds. | Fri Sep 06 1991 11:13 | 11 | |
For the context switching times look at a comparable processor in the VAXELN relase notes. You will find that the �VAX 3500 is this comparable processor. There is lots of infomation about this processor in the release notes. We will make KAV30 specific performance data available in the near future. Julian. | |||||
| 24.2 | Similar data is not exact ! | MGOI03::CSCHMIDT | Scio, Me Nil Scire | Tue Sep 10 1991 14:58 | 15 |
Fine, the last sentence is exactly what I wanted to hear !!
BTW, I'm not a support specialist that has stacks of manuals at his
desk.
I'm in sales and I have to sell the whole range of digital products as
well as specialize on the realtime parts.
You can imagine that I would be glad to have the information that's
necessary to sell the product, available with the product.
I'll probably find the context switch times, but there's the latency
part, which I think is dependant on the VME-Bus and therefore needs to
be measured !
I'm eager to see the actual timing data for the complete system, not
only a "similar" CPU chip.
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| 24.3 | HERR::CROSBIE | Tue Sep 10 1991 16:01 | 6 | ||
Hi there,
If you have an urgent need for KAV30 performance data contact the KAV30
marketing manager Wolfgang Eisenbarth @ UFC.
Graham
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