linux-kernel - Re: [RFC -mm 0/6] sysv ipc: scale msgmnb with the number of cpus

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Sun, 8 Jun 2008 09:19:42 +0200
From:	Solofo.Ramangalahy@...l.net
To:	Manfred Spraul <manfred@...orfullife.com>
Cc:	Solofo.Ramangalahy@...l.net, linux-kernel@...r.kernel.org,
	Matt Helsley <matthltc@...ibm.com>,
	Mingming Cao <cmm@...ibm.com>,
	Nadia Derbey <Nadia.Derbey@...l.net>,
	Yasunori Goto <y-goto@...fujitsu.com>
Subject: Re: [RFC -mm 0/6] sysv ipc: scale msgmnb with the number of cpus

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@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/