Re^3: memory not freed after perl exits. Solaris.

Thanks for the change to quotes. That has made it get further.

But the result is then the same as before (when I saved it in a file and ran it from there)

I can run up to **29, but not **30 or **31

**29 takes about 4 seconds.

$ perl -e '$x="x" x 2**31'
panic: string extend at -e line 1.
$  perl -e '$x="x" x 2**30'
panic: string extend at -e line 1.
$  perl -e '$x="x" x **29'
$
[download]

So why can't I run **30 or **31?

Comment on Re^3: memory not freed after perl exits. Solaris. Download Code

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Re^4: memory not freed after perl exits. Solaris. by BrowserUk (Patriarch) on Nov 25, 2010 at 10:42 UTC
Probably because your OS is setup such that each process can only address a maximum of 2GB. This is the normal configuration for 32-bit OSs. And when you do: `$x = 'x' x 2**30;` It first requests enough memory (1GB) to build the string in. It then requests another 1GB (for $X) to copy the string into. (Dumb, but that's the way it works!) As the perl executable is already consuming a few MB from startup, aftr you've allocated the first 1GB, there is not enough virtual memory left in the process to make the copy, so it fails. I was using a 64-bit OS which means each process can access much more memory. Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice. RIP an inspiration; A true Folk's Guy	[reply] [d/l]
Re^4: memory not freed after perl exits. Solaris. by marto (Cardinal) on Nov 25, 2010 at 12:48 UTC
Out of curiosity, what output do you get from running the following on the command line? `isainfo -v` [download]	[reply] [d/l]