Re: HPL hangs server
Posted in 2003
Hi Bill,
Allocating lot of shared memory segment is normal.
It depends on the load that you are trying to do.
Few questions:-
1. Are u using multiprocessor machines? (How many processors)
Try following things:-
1. setting PLOAD_SHMAT=1 and running these multiple onpload.
2. When the server hangs, can you capture the following,(during the loads)
onstat -g ath
onstat -g stk all
onstat -j <path and the pload log file name>> seg
> ath
> stk all
Thanks,
Pravin.
Bill Dare
<dareb@jevic.com> To: "'informix-list@iiug.org'"
Sent by: <informix-list@iiug.org>
owner-informix-li cc:
st@iiug.org Subject: HPL hangs server
08/26/2003 03:52
PM
9.40.FC2
AIX 5.2
I am having a problem with HPL causing the server to hang. I have a case
open with tech support (374620) but we are getting no where. Anybody run
into this before. I am running multiple onploads from a script to load a
new database. It runs for a while, sometimes 10-15 minutes, sometimes
longer. The server hanging up always seems to be a little different, but
most times I have to kill -9 the master oninit daemon. No assertion
failure. The failure occurs more often if I use a TCP/IP connection and
even more often if I run multiple onploads instead of just one. I always
get the following error from onpload:
HPL failpoint: 11014
16:36:33 pl_main.c, line 569, thread -1, proc id 741404, Segmentation
Violation.
16:36:33 PANIC: Attempting to bring system down
Also, each time a new onpload starts I get:
Tue Aug 26 16:26:02 2003
16:26:02 Dynamically allocated new virtual shared memory segment (size
4096KB)
Is this normal. I've got plenty of virtual shared memory, 4GB.
Any ideas.
Regards,
Bill
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