Fix processing of literal with unit "TB"

[oberstet]

This fixes the issue:

oberstet@bvr-sql18:~/scm/3rdparty/pgtune$ sudo ./pgtune --type=dw --connections=200 --version=9.0 /data/adr/postgresql.conf
listen_addresses = '*'
# max_connections = 2000

# shared_buffers = 768GB
temp_buffers = 8GB
# work_mem = 8GB
# maintenance_work_mem = 32GB
autovacuum_work_mem = 32GB
dynamic_shared_memory_type = posix

# effective_cache_size = 2TB
# default_statistics_target = 600
effective_io_concurrency = 1000

fsync = on
wal_sync_method = fdatasync
full_page_writes = off
wal_level = minimal
# wal_buffers = 16MB

max_wal_size = 100GB
min_wal_size = 10GB
#checkpoint_segments = 512 # 16MB * 512 = 8GB
#checkpoint_timeout = 10min
#checkpoint_completion_target = 0.9

log_destination = 'stderr'
logging_collector = on
log_line_prefix = '%t %d %u '
log_timezone = 'posixrules'
# http://www.postgresql.org/docs/9.4/static/runtime-config-logging.html#GUC-LOG-MIN-MESSAGES
#log_min_messages = debug5
#log_min_messages = info
#log_statement = 'all'

track_activities = on
track_counts = on
track_io_timing = on
track_functions = pl
track_activity_query_size = 4096

#autovacuum = off
autovacuum = on
autovacuum_max_workers = 8

datestyle = 'iso, mdy'
#timezone = 'posixrules'
timezone = 'Europe/Vienna'

lc_messages = 'en_US.UTF-8'
lc_monetary = 'en_US.UTF-8'
lc_numeric = 'en_US.UTF-8'
lc_time = 'en_US.UTF-8'
default_text_search_config = 'pg_catalog.english'

max_locks_per_transaction = 1024

shared_preload_libraries = 'pg_stat_statements'

pg_stat_statements.max = 10000
pg_stat_statements.track = all


#------------------------------------------------------------------------------
# pgtune for version 9.0 run on 2015-11-21
# Based on 3170680608 KB RAM, platform Linux, 200 clients and dw workload
#------------------------------------------------------------------------------

default_statistics_target = 500
maintenance_work_mem = 2GB
checkpoint_completion_target = 0.9
effective_cache_size = 2048GB
work_mem = 7680MB
wal_buffers = 16MB
checkpoint_segments = 128
shared_buffers = 704GB
max_connections = 200

[andreif]

Could you please squash the commits into one with a more descriptive message? Thanks!

[andreif]

I think one could use TB in one more place, see andreif@03fe4cd

That commit is merged into andreif@allthethings together with #18 and other goodies.