Suggestions for benchmarking 7.4RC2 against 7.3

Hi,

I  plan to put 7.4-RC2 in our production servers in next few hours.

Since the hardware config & the performance related GUCs parameter
are  going to remain the same i am interested in seeing the performance
improvements in 7.4 as compared 7.3 .

For this i plan to use the OSDB 0.14  and compare the results for both the
cases.

Does any one has suggestions for comparing 7.4 against 7.3 ?
Since i am using OSDB for second time only any tips/guidance
on usage of that is also appreciated.



H/W config:

CPU: 4 X Intel(R) Xeon(TM) CPU 2.00GHz
MEM : 2 GB
I/O config : PGDATA on 10000 RPM Ultra160 scsi , pg_xlog on a similar
seperate SCSI

GUC:
shared_buffers = 10000
max_fsm_relations = 5000
max_fsm_pages = 55099264
sort_mem = 16384
vacuum_mem = 8192

All other performance related parameter have default
value eg:

#effective_cache_size = 1000    # typically 8KB each
#random_page_cost = 4           # units are one sequential page fetch cost
#cpu_tuple_cost = 0.01          # (same)
#cpu_index_tuple_cost = 0.001   # (same)
#cpu_operator_cost = 0.0025     # (same)



BTW i get following error at the moment:
-----------------------------------------
/usr/local/bin/osdb-pg-ui --postgresql=no_hash_index
"osdb"
"Invoked: /usr/local/bin/osdb-pg-ui --postgresql=no_hash_index"

                  create_tables()        0.78 seconds    return value = 0
                           load()        1.02 seconds    return value = 0
      create_idx_uniques_key_bt()        0.64 seconds    return value = 0
      create_idx_updates_key_bt()        0.61 seconds    return value = 0
      create_idx_hundred_key_bt()        0.61 seconds    return value = 0
       create_idx_tenpct_key_bt()        0.62 seconds    return value = 0
  create_idx_tenpct_key_code_bt()        0.45 seconds    return value = 0
         create_idx_tiny_key_bt()        0.46 seconds    return value = 0
       create_idx_tenpct_int_bt()        0.46 seconds    return value = 0
    create_idx_tenpct_signed_bt()        0.45 seconds    return value = 0
      create_idx_uniques_code_h()        0.46 seconds    return value = 0
    create_idx_tenpct_double_bt()        0.46 seconds    return value = 0
    create_idx_updates_decim_bt()        0.45 seconds    return value = 0
     create_idx_tenpct_float_bt()        0.46 seconds    return value = 0
      create_idx_updates_int_bt()        0.46 seconds    return value = 0
     create_idx_tenpct_decim_bt()        0.46 seconds    return value = 0
      create_idx_hundred_code_h()        0.45 seconds    return value = 0
       create_idx_tenpct_name_h()        0.46 seconds    return value = 0
      create_idx_updates_code_h()        0.46 seconds    return value = 0
       create_idx_tenpct_code_h()        0.45 seconds    return value = 0
   create_idx_updates_double_bt()        0.46 seconds    return value = 0
     create_idx_hundred_foreign()        0.41 seconds    return value = 0
               populateDataBase()        11.54 seconds   return value = 0

Error in test Counting tuples at (6746)osdb.c:294:
... empty database -- empty results
perror() reports: Resource temporarily unavailable

someone sighup'd the parent

Any clue?

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Regards
Mallah.