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Re: cygserver - Postgres Multiple connection Load Testing - Inifinte Loop
- From: <sarbx-cygwin6344 at mailblocks dot com>
- To: cygwin at cygwin dot com
- Date: Mon, 02 Aug 2004 20:33:07 -0700
- Subject: Re: cygserver - Postgres Multiple connection Load Testing - Inifinte Loop
On Jul 30 14:32, sarbx-cygwin6344@mailblocks.com wrote:
>On Jul 28 20:19, sarbx-cygwin6344@mailblocks.com wrote:
>>$ postgres --version
>>postgres (PostgreSQL) 7.4.3
>>
>>$ uname -a
>>CYGWIN_NT-5.0 sbellan-nb 1.5.10(0.116/4/2) 2004-05-25 22:07 i686
>>unknown unknown
>>Cygwin
>>
>>While doing Load testing using DOTS, after 5 to 6 connections the
>>machine starts to slow down and
>>cygserver seems to hog most of the CPU. After running the cygserve
in
>>debug mode , I see the following
>>in the log file repeating infinitely.
>>[...]
>
>Just to be sure, are you talking about 5 or 6 *concurrent*
connections?
>That might be important. I'm not exactly sure so far but there
might
>be a race condition in my mutex code.
>
>Corinna
Yes, I'm talking about 5 or 6 *concurrent* connections.
Ok, that's what I'd suspected. I have patched Cygserver and I'd like
to
get some feedback on whether this solves the problem or not. Would you
please try the latest developer snapshot from
http://cygwin.com/snapshots/
and report if that version of Cygserver still eats up CPU time under
the
above circumstances?
Corinna
This time around, cygserver does not eat CPU. But after 5 to 6
concurrent
connections nothing seem to work, looks kind of hung. There is no
activity in the Postgres
log file. Opening a new database connection also hangs. There is no
activity on the machine.
Let me know a alternate address where I can send you the log file.
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