From: David Kerr <dmk@mr-paradox.net>
To: pgsql-performance@postgresql.org
Subject: pgbench could not send data to client: Broken pipe
Date: Wed, 8 Sep 2010 10:46:29 -0700
Message-ID: <20100908174629.GD40339@mr-paradox.net> (raw)
Howdy,
I'm running pgbench with a fairly large # of clients and getting this error in my PG log file.
Here's the command:
./pgbench -c 1100 testdb -l
I get:
LOG: could not send data to client: Broken pipe
(I had to modify the pgbench.c file to make it go that high, i changed:
MAXCLIENTS = 2048
I thought maybe i was running out of resources so i checked my ulimits:
ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) unlimited
max locked memory (kbytes, -l) unlimited
max memory size (kbytes, -m) unlimited
open files (-n) 2048
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) unlimited
real-time priority (-r) 0
stack size (kbytes, -s) unlimited
cpu time (seconds, -t) unlimited
max user processes (-u) unlimited
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
This is Pg 8.3.10. Redhat 64bit, the system has 48 cores, 256G of ram..
Any idea what would be causing the error?
thanks
Dave
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To: pgsql-performance@postgresql.org
Cc: dmk@mr-paradox.net
Subject: Re: pgbench could not send data to client: Broken pipe
In-Reply-To: <20100908174629.GD40339@mr-paradox.net>
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