Symptom
- You can see many NLWP threads that is involved in SAP ASE process from the result of 'prstat' command.
23885 user 13G 13G sleep 0 0 91:02:51 1.3% dataserver/93
20629 user 13G 13G cpu3 1 0 119:36:03 1.3% dataserver/99
24070 user 13G 13G sleep 32 0 97:43:31 0.6% dataserver/108 - The result of 'pstack' command shows that all NLWP threads are Solaris async I/O library.
[pstack result]
----------------- lwp# 4 / thread# 4 --------------------
lwp_park
cond_wait_queue
cond_wait
_aio_idle
_aio_do_request
thread_create_handler
_lwp_start
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Environment
- SAP Adaptive Server Enterprise (ASE)
- SAP Adaptive Server Enterprise Cluster Edition (ASE CE)
- Solaris on Sparc 64bit
- Process mode
Product
SAP Adaptive Server Enterprise 12.5 ; SAP Adaptive Server Enterprise 15.7 ; SAP Adaptive Server Enterprise 16.0
Keywords
- Lightweight processes
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