Environment
Novell Open Enterprise Server
(OES)
Novell Cluster Services (NCS)
Novell Cluster Services (NCS)
Situation
High utilization, slow
performance, or slow drive mappings on Linux OES running Novell
Cluster Services.
Usually seen with six or more virtual NCP servers per physical server. (ie. six or more secondary IP adresses per physical server)
Usually seen with six or more virtual NCP servers per physical server. (ie. six or more secondary IP adresses per physical server)
Resolution
There is an eDirectory tunable
parameter that needs to be increased.
Issue the ndsconfig command to set eDirectory's max-threads higher, default is 64. 128 is the recommended amount to fix this problem:
Issue the ndsconfig command to set eDirectory's max-threads higher, default is 64. 128 is the recommended amount to fix this problem:
ndsconfig set
n4u.server.max-threads=128
NDS needs to be restarted
after this change; the most straightforward way of doing so is to
reboot the server.
Additional Information
The problem was due to the way
NDS allocates threads for NCP services. With clustering involved,
each virtual NCP server was taking a finite number of threads, and
the default tuning for eDir is too low to support more than about 6
virtual NCP servers per physical server.
Formerly known as TID# 10099403
Formerly known as TID# 10099403