From: Miquel van Smoorenburg <mikevs@xs4all.net>
To: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: linux-nfs@vger.kernel.org
Subject: [PATCH 01/03]: sunrpc: increase MAX_HASHTABLE_BITS to 14
Date: Sun, 22 Aug 2010 20:30:20 +0200 [thread overview]
Message-ID: <20100822183020.GA26607@xs4all.net> (raw)
In-Reply-To: <20100822182848.GA26590@xs4all.net>
The maximum size of the authcache is now set to 1024 (10 bits),
but on our server we need at least 4096 (12 bits). Increase
MAX_HASHTABLE_BITS to 14. This is a maximum of 16384 entries,
each containing a pointer (8 bytes on x86_64). This is
exactly the limit of kmalloc() (128K).
Signed-off-by: Miquel van Smoorenburg <mikevs@xs4all.net>
diff -ruN linux-2.6.36-rc1.orig/net/sunrpc/auth.c linux-2.6.36-rc1/net/sunrpc/auth.c
--- linux-2.6.36-rc1.orig/net/sunrpc/auth.c 2010-08-16 02:41:37.000000000 +0200
+++ linux-2.6.36-rc1/net/sunrpc/auth.c 2010-08-22 17:02:27.896009116 +0200
@@ -38,7 +39,7 @@
static LIST_HEAD(cred_unused);
static unsigned long number_cred_unused;
-#define MAX_HASHTABLE_BITS (10)
+#define MAX_HASHTABLE_BITS (14)
static int param_set_hashtbl_sz(const char *val, const struct kernel_param *kp)
{
unsigned long num;
next prev parent reply other threads:[~2010-08-22 18:30 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-22 18:28 [PATCH 00/03] sunrpc: a few authentication cache patches Miquel van Smoorenburg
2010-08-22 18:30 ` Miquel van Smoorenburg [this message]
2010-09-07 19:03 ` [PATCH 01/03]: sunrpc: increase MAX_HASHTABLE_BITS to 14 Trond Myklebust
2010-08-22 18:31 ` [PATCH 02/03]: sunrpc: make auth_hashtable_size param mode 0444 Miquel van Smoorenburg
2010-09-07 18:58 ` Trond Myklebust
2010-09-07 19:24 ` Miquel van Smoorenburg
2010-08-22 18:31 ` [PATCH 03/03] sunrpc: scale hashtable cache size with memory Miquel van Smoorenburg
2010-09-07 19:02 ` Trond Myklebust
2010-09-07 19:52 ` Miquel van Smoorenburg
2010-09-07 20:32 ` Trond Myklebust
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