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Why was the website so slow for so long?

The cause of the slowdown was a change to the ZFS dataset. In conjunction with the database server, very little caching was being done. This combination resulted in increased disk I/O as the system churned through the database. Details in the blog post which outlines the various things which changed. Many graphs.

non port: databases/postgresql-cstore_fdw/pkg-plist
SVNWeb

Number of commits found XX: 3

Thu, 20 Feb 2020
[ 12:15 farrokhi ] Original commit   Revision:526568
526568 databases/postgresql-cstore_fdw/pkg-plist
databases/postgresql-cstore_fdw: Fix plist
Sun, 23 Jul 2017
[ 14:47 dbaio ] Original commit   Revision:446487
446487 databases/postgresql-cstore_fdw/Makefile
446487 databases/postgresql-cstore_fdw/distinfo
446487 databases/postgresql-cstore_fdw/files
446487 databases/postgresql-cstore_fdw/files/pkg-message.in
446487 databases/postgresql-cstore_fdw/pkg-plist
databases/postgresql-cstore_fdw: Update to 1.6.0

- STRIP cstore_fdw.so [1]
- Update LICENSE
- Add a message about the additional steps for users that are upgrading

PR:		220922 [1]
Submitted by:	amutu@amutu.com (maintainer) [1]
Tue, 13 Jun 2017
[ 10:28 tz ] Original commit   Revision:443496
443496 databases/Makefile
443496 databases/postgresql-cstore_fdw
443496 databases/postgresql-cstore_fdw/Makefile
443496 databases/postgresql-cstore_fdw/distinfo
443496 databases/postgresql-cstore_fdw/pkg-descr
443496 databases/postgresql-cstore_fdw/pkg-plist
New port: databases/postgresql-cstore_fdw

Cstore_fdw is a extension of PostgreSQL. This extension uses the Optimized Row
Columnar (ORC) format for its data layout. ORC improves upon the RCFile format
developed at Facebook, and brings the following benefits:
	- Compression: Reduces in-memory and on-disk data size by 2-4x. Can be
	  extended to support different codecs.
	- Column projections: Only reads column data relevant to the query.
	  Improves performance for I/O bound queries.
	- Skip indexes: Stores min/max statistics for row groups, and uses them
	  to skip over unrelated rows.
Further, cstore_fdw used the Postgres foreign data wrapper APIs and type
representations with this extension. This brings:
	- Support for 40+ Postgres data types. The user can also create new types
	  and use them.
	- Statistics collection. PostgreSQL's query optimizer uses these stats to
	  evaluate different query plans and pick the best one.
	- Simple setup. Create foreign table and copy data. Run SQL.

WWW: https://github.com/citusdata/cstore_fdw

PR:           219635
Submitted by: Jov <amutu@amutu.com>

Number of commits found XX: 3

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