database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-27 12:41:57 +03:00
Code Activity

Apply patches from Neil Conway.

Browse Source 
> Hi Tatsuo,
>
> I've attached a patch for the version of pgbench in CVS. It includes the
> following changes:
>
>     - fix some spelling mistakes, indentation stuff, etc.
>
>     - minor code cleanup -- (void) args instead of (), etc.
>
>     - allocate the state array dynamically, so that it is only as
>     large as needed. This reduces the memory consumption of pgbench
>     slightly, and makes a larger MAXCLIENTS setting possible
>
>     - (the only controversial change) add an option "-l" to log
>     transaction latencies to a file. The "transaction latency"
>     is the time between when the BEGIN is issued and the transaction
>     commits. This is written to a file, along with the client #
>     and the transaction #. The data in the file can then be used
>     for things like:
>
>         - consistency analysis: is the TPS the same through the
>         entire run of pgbench, or does it change?
>
>         - more detailed stats: what is the average latency, worse-case
>         latency, best-case latency?
>
>         - graphs: feed the data to gnuplot, graph latency versus. time
>
>         - etc.
>
>     I was going to store this data in memory and write it to disk
>     at the end of the pgbench run, but that isn't feasible because
>     the data can be very large: for example, ~70MB if benchmarking
>     128 clients doing 100,000 transactions each.
>
> Cheers,
>
> Neil
This commit is contained in:
Tatsuo Ishii
2002-07-20 03:02:01 +00:00
parent 009d593c48
commit cdf4b9aff2
3 changed files with 100 additions and 40 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
contrib/pgbench/README.pgbench
View File

@ -1,4 +1,4 @@
pgbench README 2001/10/24 Tatsuo Ishii (t-ishii@sra.co.jp)
pgbench README 2002/07/20 Tatsuo Ishii (t-ishii@sra.co.jp)
o What is pgbench?
@ -101,7 +101,7 @@ o options
(10,000,000) tuples in the accounts table.
default is 1.
-U login
-U login
Specify db user's login name if it is different from
the Unix login name.
@ -111,7 +111,7 @@ o options
show the password. Use this for TESTING PURPOSE ONLY.
-n
No vacuuming and cleaning the history table prior the
No vacuuming and cleaning the history table prior to the
test is performed.
-v
@ -122,10 +122,19 @@ o options
-S
Perform select only transactions instead of TPC-B.
-C
-C
Establish connection for each transaction, rather than
doing it just once at begining of pgbench in the normal
mode. This is usefull to measure the connection overhead.
doing it just once at beginning of pgbench in the normal
mode. This is useful to measure the connection overhead.
-l
Write the time taken by each transaction to a logfile,
with the name "pgbench_log.xxx", where xxx is the PID
of the pgbench process. The format of the log is:
client_id transaction_no time
where time is measured in microseconds.
-d
debug option.
@ -153,6 +162,14 @@ Basically it is same as BSD license. See pgbench.c for more details.
o History
2002/07/20
* patch contributed by Neil Conway.
* code/document clean up and add -l option.
2002/02/24
* do not CHECKPOINT anymore while initializing benchmark
* database. Add -N option.
2001/10/24
* "time"->"mtime"