> This patch-set aims at removing the current limit on argv+env space aka. > MAX_ARG_PAGES.
Running with this patch shows that /bin/bash has some unpleasant O(n^2) performance issues with long argument lists. I made a 1Mbyte file full of pathnames, then timed the execution of: $ /bin/echo `cat megabyte` | wc $ /bin/echo `cat megabyte megabyte` | wc etc. ... System time was pretty much linear as the arglist grew (and only got up to 0.144 seconds at 5Mbytes). But user time ~= real time (in seconds) looks like: 1 5.318 2 18.871 3 40.620 4 70.819 5 108.911 Above 5Mbytes, I started seeing problems. The line/word/char counts from "wc" started being "0 0 0". Not sure if this is a problem in "wc" dealing with a single line >5MBytes, or some other problem (possibly I was exceeding the per-process stack limit which is only 8MB on that machine). -Tony - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
