Running up against ksh array size limit

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Running up against ksh array size limit

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Running up against ksh array size limit - Aug. 23, '06, 11:02:47 AM

policyvote

Posts: 12
Joined: Jan. 11, '06,
Status: offline

Hello all--

I unfortunately ran up against the old array size limit of 1,023 elements in a ksh script. According to my UNIX in-a-nutshell book, the array max was upped to 4,096 elements with ksh88, and modern versions allow up to 65,536 elements! I am running SFU 3.5 on Win2K . . . what can I do?

Peace
policy

Post #: 1

RE: Running up against ksh array size limit - Aug. 23, '06, 2:02:35 PM

Rodney

Posts: 3695
Joined: Jul. 9, '02,
From: /Tools lab
Status: offline

There's a few ways to go:
1) I haven't made it into a package yet, but the base binary for a newer ksh
I dropped onto the ftp site several weeks ago in /pub. You can try running that.
I don't know if the array size changed/increased, but it's worth a try.

2) You could try running the script with bash. I don't know off-hand the array
limit with bash, but most "ksh scripts" can be run by bash.

3) If (1) or (2) don't work out I can look at the ksh build to see if the
array size can be increased. Given other work priorities it would be a several days
at least before getting to this option.

(in reply to policyvote)

Post #: 2

RE: Running up against ksh array size limit - Sep. 27, '06, 11:19:19 AM

policyvote

Posts: 12
Joined: Jan. 11, '06,
Status: offline

Rodney--

Sorry it took so long to get back to you. I had already had to code around this specific problem, so I didn't get a chance to actually test this. I did install the newer build of ksh, however. I immediately noticed improved performance--especially in terms of draw rate to the screen, things seem to happen much much faster. However, if I use the "clear" command, I get the error: 'xterm': unknown terminal type.

I will test to see if the array size thing has been fixed, but in the meantime, do you have any ideas?

Peace
policy

(in reply to Rodney)

Post #: 3

RE: Running up against ksh array size limit - Sep. 27, '06, 1:11:36 PM

Rodney

Posts: 3695
Joined: Jul. 9, '02,
From: /Tools lab
Status: offline

> however. I immediately noticed improved performance--especially in terms of draw
> rate to the screen, things seem to happen much much faster.

It wasn't an intended side-effect

I think it comes from the fact that I haven't made the code handle multibyte as the
version that ships with Interix does.

> However, if I use the "clear" command, I get the error: 'xterm': unknown
> terminal type.

okay, I'll check it out.

I did some tests on array size and found I can increase the size for ksh.
But the newer ksh there still has the older, smaller size.

(in reply to policyvote)