Re: max fd's in linux

>
> If the patch you are using is the patch I am thinking of, it only
> patches the kernel, and not the library headers as well (as the previous
> patch did).
>
> Apparently the increased value of FD_SETSIZE is picked up, but there are
> a couple other library constants that might get missed. Such is life. I
> hand-hack around such inconveniences.

Its the patch recomended by Linus and linked to off his homepage. It does
patch the header files:

here is a section of the patch:

diff -ruN --exclude *.orig --exclude *.rej --exclude *~
linux-2.0.34pre15-secure/include/linux/fs.h linux/include/linux/fs.h
--- linux-2.0.34pre15-secure/include/linux/fs.h Thu May 21 13:52:40 1998
+++ linux/include/linux/fs.h Thu May 21 13:30:22 1998
@@ -27,7 +27,7 @@

 /* Fixed constants first: */
 #undef NR_OPEN
-#define NR_OPEN 256
+#define NR_OPEN 3000

 #define NR_SUPER 64
 #define BLOCK_SIZE 1024

--- linux-2.0.34pre15-secure/include/linux/limits.h Wed Jul 17
08:10:03 1996+++ linux/include/linux/limits.h Thu May 21 13:30:22 1998
@@ -1,7 +1,7 @@
 #ifndef _LINUX_LIMITS_H
 #define _LINUX_LIMITS_H

-#define NR_OPEN 256
+#define NR_OPEN 3000

 #define NGROUPS_MAX 32 /* supplemental group IDs are available */
 #define ARG_MAX 131072 /* # bytes of args + environ for exec() */

diff -ruN --exclude *.orig --exclude *.rej --exclude *~
linux-2.0.34pre15-secure/include/linux/posix_types.h
linux/include/linux/posix_types.h
--- linux-2.0.34pre15-secure/include/linux/posix_types.h Sat Oct 25
09:35:58
1997
+++ linux/include/linux/posix_types.h Thu May 21 13:30:22 1998
@@ -30,7 +30,7 @@
 #define __NFDBITS (8 * sizeof(unsigned long))

 #undef __FD_SETSIZE
-#define __FD_SETSIZE 1024
+#define __FD_SETSIZE 4096

 #undef __FDSET_LONGS
 #define __FDSET_LONGS (__FD_SETSIZE/__NFDBITS)

so you see, its doing alot of header file patching. I don't know how to
patch squid though to make use of it, I was counting on Squid getting its
information from the header files.

What values does squid rely on and how can I fix this?

>
> D
>
> --
> -----BEGIN GEEK CODE BLOCK-----
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> W+++(--)$ N++ w++$>--- t+ 5++ X+() R+ tv b++++ DI+++ e- h-@
> ------END GEEK CODE BLOCK------
>

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Received on Sun Oct 04 1998 - 06:39:25 MDT