| From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
|---|---|
| To: | Daniel Farina <daniel(at)heroku(dot)com> |
| Cc: | Jaime Casanova <jaime(at)2ndquadrant(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: Sync Rep v17 |
| Date: | 2011-02-28 19:17:02 |
| Message-ID: | 1298920622.12992.1763.camel@ebony |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
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| Lists: | pgsql-hackers |
On Thu, 2011-02-24 at 18:13 -0800, Daniel Farina wrote:
> I have also reproduced this. Notably, things seem fine as long as
> pgbench is confined to one backend, but as soon as two are used (-c 2)
> by the feature I can get segfaults.
Sorry that you all experienced this. I wasn't able to get concurrent
queue accesses even with -c 8, so I spent about half a day last week
investigating a possible spinlock locking flaw. That meant the code in
that area was untested, which is most obvious now. I guess that means I
should test on different hardware in future.
--
Simon Riggs http://www.2ndQuadrant.com/books/
PostgreSQL Development, 24x7 Support, Training and Services
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