--- In firebird-support@yahoogroups.com, "Ivan Prenosil"
<Ivan.Prenosil@...> wrote:

>
> > We have a reproducible problem where the FB server hangs when we

try

> > to hammer on it with about 10 threads running queries

simultaneously.

> > The hang seems to happen in the middle of a connect.
>
> When "server hangs", it does not accept new connections, e.g. from

isql ?

> When "server hangs", do you see any activity of fb process (cpu or

disc) ?

>
> Ivan
>

Hi Ivan, I work with Richard and am actually repro'ing this problem.
To answer your questions:

Server hangs. Does not accept new connections, even from isql.
No CPU activity.

I have loaded symbols and dropped into the debugger.
Most threads seem to be hung in stall, which i presume is not
unexpected.
There are a couple however that seem to be stuck in MemoryPool related
functions. One a constructor (blocked on the
InitializeCriticalSession call), two others seem to be touching free
block structures. However, these stacks are of course suspect since
it's a release build.

:)ross
Ross Bunker
Senior Software Engineer
Tableau Software