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From: | Bob Proulx |
Subject: | Re: Unexpected delay in using arguments. |
Date: | Tue, 14 Aug 2018 15:50:36 -0600 |
User-agent: | Mutt/1.10.1 (2018-07-13) |
I followed along through the script: > m=20000 ... > test1() { ... Eventually I got to this line: > set -- $(seq $m) At that line I see that bash must allocate enough memory to hold all of the numbers from 1 through 20000 in memory all at one time. That is very inefficient. That is at least 100K of memory. $ seq 20000 | wc -c 108894 Of course I assume this is only a proxy simpler reproducer for the actual problem program but just the same it is almost always possible to refactor a program into a different algorithm that avoids the need to enumerate so many arguments in memory. I suggest refactoring the program to avoid the need for this memory stress. Bob
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