How to increase the size of the buffer pool for storing SysV messages

This is one of the few documented parts of system tuning under Solaris. Have a look at "Solaris 2.3 Administering Security, Performance, and Accounting", page 201. Just put a 


        set msgsys:msginfo_msgmnb=<value>
in your systems file. Be prepared that there is a unfixed bug in Solaris which masks the value you give with 0xFFFF thus truncating it to less than 64k. You may fix this by applying the following binary patch: 

    [Text with leading "->" is user input, with "::" is the
    expected response.]

    ->  adb -w /kernel/sys/msgsys
    ->  msgget+0x74,5?i
    ::  msgget+0x74:    ld      [%l2], %l2
    ::                  sll     %l2, 0x10, %l2
    ::                  ld      [%fp - 0x8], %l1
    ::                  srl     %l2, 0x10, %l2
    ::                  st      %l2, [%l1 + 0x3c]
    ->  msgget+0x78?W0x1000000
    ::  msgget+0x78:    0xa52ca010      =       0x1000000
    ->  msgget+0x80?W0x1000000
    ::  msgget+0x80:    0xa534a010      =       0x1000000
    ->  msgget+0x74,5?i
    ::  msgget+0x74:    ld      [%l2], %l2
    ::                  nop
    ::                  ld      [%fp - 0x8], %l1
    ::                  nop
    ::                  st      %l2, [%l1 + 0x3c]
    -> $q
Please do not forget to tell you SunSoft contact that this bug needs to be fixed (they told me they will fix it RSN )

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