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



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