BUG #12756: performance issues with xml-data
The following bug has been logged on the website:
Bug reference: 12756
Logged by: Thomas Fischer
Email address: fischer@transporeon.com
PostgreSQL version: 9.3.6
Operating system: Debian
Description:
When I do a select * of a table with some xml-data (about 50 MB) in a
text-field it will take ages to get a result, because wireshark is
recognizing some kind of packet defragmentation, so these packets have will
be sent over and over again.
If you are not able to reproduce this behaviour I can give you some example
data.
With regards
Thomas
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fischer@transporeon.com writes:
When I do a select * of a table with some xml-data (about 50 MB) in a
text-field it will take ages to get a result, because wireshark is
recognizing some kind of packet defragmentation, so these packets have will
be sent over and over again.
If that is actually what's happening, you need to file a bug against your
kernel; such behavior is far outside Postgres' control.
regards, tom lane
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