Memory usage of writer process

From: Alex <alex(at)liivid(dot)com>
To: pgsql-performance(at)postgresql(dot)org
Subject: Memory usage of writer process
Date: 2009-08-13 04:44:20
Message-ID: 73f5d8f0-ec4b-4643-b515-ec50b0a40f31@d15g2000prc.googlegroups.com
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The writer process seems to be using inordinate amounts of memory:

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+
COMMAND
11088 postgres 13 -2 3217m 2.9g 2.9g S 0 38.7 0:10.46 postgres:
writer process
20190 postgres 13 -2 3219m 71m 68m S 0 0.9 0:52.48 postgres:
cribq cribq [local] idle

I am writing moderately large (~3k) records to my database a few times
a second. Even when I stop doing that, the process continues to take
up all of that memory.

Am I reading this right? Why is it using so much memory?

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