Solaris 10 kernel parameters and powerpath 5.0.0

Hi Pmac,


The Solaris 10 Operating System introduces the following new resource controls to replace the old /etc/system tunables:


...............................Old Old New New
Resource control tunable default Max value default
---------------------- ------------- ------- --------- ----------
process.max-msg-qbytes msginfo_msgmnb 4096 ULONG_MAX 65536
process.max-msg-messages msginfo_msgtql 40 UINT_MAX 8192
process.max-sem-ops seminfo_semopm 10 INT_MAX 512
process.max-sem-nsems seminfo_semmsl 25 SHRT_MAX 512
project.max-shm-memory shminfo_shmmax 0x800000 UINT64_MAX 1/4 physmem
project.max-shm-ids shminfo_shmmni 100 2**24 128
project.max-msg-ids msginfo_msgmni 50 2**24 128
project.max-sem-ids seminfo_semmni 10 2**24 128

As the names suggest, these rctls are attributes of either processes or projects.

The following tunables are now obsolete in the Solaris 10 Operating System:


Shared Memory Semaphores Message-Queue
-------------- -------------- ---------------
shminfo_shmseg seminfo_semmns msginfo_msgmax
shminfo_shmmin seminfo_semvmx msginfo_msgssz
shminfo_shmmax* seminfo_semmnu msginfo_msgmni*
shminfo_shmmni* seminfo_semaem msginfo_msgtql*
seminfo_semume msginfo_msgmnb*
seminfo_semusz msginfo_msgmap
seminfo_semmap msginfo_msgseg
seminfo_semmsl*
seminfo_semopm*
seminfo_semmni*


values ending in * are technically obsolete, but if they are present in the /etc/system file then at boot the kernel will translate the values into global resource controls.

Hi Conor,

Thanks for the reply. Do EMC have recommended values or will the defaults suffice with running Powerpath 5.0.0?

Regards Paul.

Does the same apply to PP5.2sp1?

For Solaris 10 and any version of PowerPath the defaults will suffice. The default values now for all of these tunables is actually higher than the minimum EMC-recommended values for previous versions of Solaris.

Conor