Date: Thu, 11 Jan 2001 12:34:42 -0800 From: Alfred Perlstein <bright@wintelcom.net> To: "Brian J. McGovern" <bmcgover@cisco.com> Cc: hackers@FreeBSD.ORG Subject: Re: Question about 'open' files.... Message-ID: <20010111123442.H7240@fw.wintelcom.net> In-Reply-To: <200101112026.f0BKQJ406592@bmcgover-pc.cisco.com>; from bmcgover@cisco.com on Thu, Jan 11, 2001 at 03:26:19PM -0500 References: <20010111122147.E7240@fw.wintelcom.net> <200101112026.f0BKQJ406592@bmcgover-pc.cisco.com>
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* Brian J. McGovern <bmcgover@cisco.com> [010111 12:26] wrote:
> Just for chuckles, try them in the same directory. That will emulate what
> I've been doing here when having problems.
I don't think so:
#include <fcntl.h>
int main(int argc, char **argv) {
int x, i, counter;
char buf[200];
char buffer[2048];
memset(buffer, '%', sizeof(buffer));
for (counter = 0; counter < 20000; counter++)
{
sprintf(buf, "files/%s%d", argv[1], counter);
x = open(buf,O_CREAT | O_WRONLY);
if (x == -1) {
perror("open");
exit(1);
}
write(x, buffer, sizeof(buffer));
close(x);
}
return 0;
}
~/tst % gcc t.c
~/tst % for i in a b c d e f g h ; do ./a.out $i & ; done
~/tst % find . | wc -l
26783
...
~/tst % find . | wc -l
40524
Sure the directory ops start to get pretty slow once a UFS dir
gets to be this size, but that's just a problem with UFS.
I really can't reproduce this behavior here and can't suggest a
fix unless you can come up with a test program of your own to
produce it.
sorry,
-Alfred
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