HP StorageWorks HA-Fabric Manager Release Notes, V08.08.00 (AA-RUR6H-TE, December 2005)

HP-UX parameters ma

y need to be changed before you run the HAFM client

The following two H

P-UX 1 1.0 kernel parameters are set too low for most

Java applications. Usually you will see this problem as a java.lang.OutOf

MemoryError: unable to create new native thread error. To resolve

theissue,editthe

following parameter limits:

• max_thread_proc—The maximum number of threads allowed in each

process. Theminimumvalue(anddefault)is64,whichisoftentoolowfor

most Java applications. Set the value of the max_thread_proc higher than

the expected maximum number of simultaneously active threads. The maximum

value is the val

ue of nkthread.

• nkthread—The total number of kernel threads available in the system. This

parameter is similar to the nproc tunableexceptthatitdeﬁnes the limit for

the total numb

er of kernel threads able to run simultaneously in the system.

The value must be greater than nproc. The default is approximately twice that

of nproc. The maximum is 30000. The suggested value of nkthread is

2*max_thread_proc. If you have many Java processes running and each

running process uses many threads, you should increase this value.

Ethernet port on HAFM appliance may encounter problems

When you use TightVNC to access the HAFM appliance and you are running HAFM

locally on the HAFM appliance, the Ethernet port on the HAFM appliance can appear

to hang. When the Ethernet port encounters problems, the following m ay occur:

• There is an apparent loss of communication to switches being managed by

HAFM.

• The appliance CPU usage and memory usage display abnormally high readings.

Workaround

If this c

ondition persists, it may be necessary to reboot the HAFM appliance. This is not

disruptive to managed switches, but monitoring and logging functions are interrupted

while the appliance is rebooting.

HA-Fabric Manager release notes