Threads limit for postmaster

Guillaume Pungeot wrote:

Hi,
I have a problem when a lot of connexions are opened on postgresql.

When 243 threads have been created by postmaster, the next CreateThread
fails and the following error is written in pglogs : "FATAL: could not
create sigchld waiter thread: error code 8".

I need to open more than 300 connexions on my server.
Is there anyone to help me ?

OS : windows 2003 server x64 edition.

This is a known limitation and will be fixed in 8.3. We'll consider
backporting this to 8.2 once it has been proven in the field. So if you
can, please download the latest beta of 8.3 and give that a try.

//Magnus

On 11/30/07, Magnus Hagander <magnus@hagander.net> wrote:

Guillaume Pungeot wrote:

Hi,
I have a problem when a lot of connexions are opened on postgresql.

When 243 threads have been created by postmaster, the next CreateThread
fails and the following error is written in pglogs : "FATAL: could not
create sigchld waiter thread: error code 8".

I need to open more than 300 connexions on my server.
Is there anyone to help me ?

OS : windows 2003 server x64 edition.

This is a known limitation and will be fixed in 8.3. We'll consider
backporting this to 8.2 once it has been proven in the field. So if you
can, please download the latest beta of 8.3 and give that a try.

//Magnus

Would increasing the Desktop shared memory size, as described in another
thread , by changing a registry setting would help his case?

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Hi,
I have a problem when a lot of connexions are opened on postgresql.

When 243 threads have been created by postmaster, the next CreateThread
fails and the following error is written in pglogs : "FATAL: could not
create sigchld waiter thread: error code 8".

I need to open more than 300 connexions on my server.
Is there anyone to help me ?

OS : windows 2003 server x64 edition.

This is a known limitation and will be fixed in 8.3. We'll consider
backporting this to 8.2 once it has been proven in the field. So if you
can, please download the latest beta of 8.3 and give that a try.

//Magnus

Would increasing the Desktop shared memory size, as described in another
thread , by changing a registry setting would help his case?

I don't think so. This looks like the running out of address-space in the postmaster problem, which is a different one.

/Magnus