| From: | Takahiro Itagaki <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp> |
|---|---|
| To: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Ragged latency log data in multi-threaded pgbench |
| Date: | 2010-03-16 03:09:14 |
| Message-ID: | 20100316120914.9C28.52131E4D@oss.ntt.co.jp |
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| Lists: | pgsql-hackers |
Takahiro Itagaki <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp> wrote:
> > > 2. Use per-thread log files.
> > > File names would be "pgbench_log.<main-process-id>.<thread-id>".
Here is a patch to implement per-thread log files for pgbench -l.
The log filenames are "pgbench_log.<main-process-id>.<thread-serial-number>"
for each thread, but the first thread (including single-threaded) still uses
"pgbench_log.<main-process-id>" for the name because of compatibility.
Example:
$ pgbench -c16 -j4 -l
$ ls
pgbench_log.2196 pgbench_log.2196.1 pgbench_log.2196.2 pgbench_log.2196.3
Comments and suggenstions welcome.
Regards,
---
Takahiro Itagaki
NTT Open Source Software Center
| Attachment | Content-Type | Size |
|---|---|---|
| pgbench_log_20100316.patch | application/octet-stream | 8.2 KB |
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