Re: spinlocks on powerpc

Manabu Ori <manabu.ori@gmail.com>

From: Manabu Ori <manabu.ori@gmail.com>

To: Tom Lane <tgl@sss.pgh.pa.us>

Cc: Robert Haas <robertmhaas@gmail.com>, Heikki Linnakangas <heikki.linnakangas@enterprisedb.com>, Tatsuo Ishii <ishii@postgresql.org>, pgsql-hackers@postgresql.org

Date: 2012-01-05T12:40:56Z

Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →

Use LWSYNC in place of SYNC/ISYNC in PPC spinlocks, where possible.
- 631beeac3598 9.2.0 cited
Reduce sinval synchronization overhead.
- b4fbe392f8ff 9.2.0 cited

Attachments

pgbench-Power750-20120104.png (image/png)

2012/1/4 Tom Lane <tgl@sss.pgh.pa.us>
> I've committed the TAS_SPIN addition.

Tom, thank you for committing the fix.
I confirmed it's effective with git head on Power750 just in case, see
attached graph.
I hope PPC guys will be happier thanks to these commits.

Regards,
Manabu Ori