MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Message-ID: <18507.34830.260384.473257@frecb006361.adech.frec.bull.fr>
Date: Sun, 8 Jun 2008 09:19:42 +0200
To: Manfred Spraul <manfred@colorfullife.com>
Cc: Solofo.Ramangalahy@bull.net, linux-kernel@vger.kernel.org,
       Matt Helsley <matthltc@us.ibm.com>, Mingming Cao <cmm@us.ibm.com>,
       Nadia Derbey <Nadia.Derbey@bull.net>,
       Yasunori Goto <y-goto@jp.fujitsu.com>
Subject: Re: [RFC -mm 0/6] sysv ipc: scale msgmnb with the number of cpus
In-Reply-To: <484A9D52.2020703@colorfullife.com>
References: <20080605145712.116223941@bull.net>
	<484A9D52.2020703@colorfullife.com>
From: Solofo.Ramangalahy@bull.net
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1163
Lines: 32

Manfred Spraul writes:
 > > The size in bytes of a SysV IPC message queue, msgmnb, is too small
 > > for large machines, but we don't want to bloat small machines
 > >
 > > Several methods are used already to modify (mainly increase) msgmnb:
 > > . distribution specific patch
 > > . system wide sysctl.conf
 > > . application specific tuning via /proc/sys/kernel/msgmnb
 > >
 > >   
 > Which distributions use a patch?

opensuse has this:

"The defaults are too small for most users."

[...]
 #define MSGMNI    16   /* <= IPCMNI */     /* max # of msg queue identifiers */
-#define MSGMAX  8192   /* <= INT_MAX */   /* max size of message (bytes) */
-#define MSGMNB 16384   /* <= INT_MAX */   /* default max size of a message queue */
+#define MSGMAX  65536   /* <= INT_MAX */   /* max size of message (bytes) */
+#define MSGMNB 65536   /* <= INT_MAX */   /* default max size of a message queue */
[...]

-- 
solofo

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/