tmpfs out of space (ZFS related?)

[Ivan Voras]

On 11/22/10 00:28, Paul B Mahol wrote:

> Find way to reproduce it 100%.

The way I described it can be used to reproduce the problem 100%. 
Detailed instructions for a test case would be something like this:

0) configure a system with tmpfs for /tmp
1) install PostgreSQL 9.0, use a ZFS file system for the database
2) install and use pgbench to initialize a database as large as physical 
memory (i.e. it will blow away all caches)
3) run pgbench with -c of around 10 or so, let it run for 5 minutes or so
4) stop PostgreSQL, observe reported free memory statistics etc.