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Update notes for 2017-12-04

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Alan Orth
2017-12-04 18:14:45 +03:00
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@ -85,9 +85,14 @@ $ grep 2.86.122.76 /home/cgspace.cgiar.org/log/dspace.log.2017-12-01 | grep -o -
## 2017-12-04
- Linode alerted that CGSpace's load was 255.5% from 8 to 10 AM again
- I looked at the Munin stats again to see how the PostgreSQL tweaks from a few weeks ago were holding up:
- I looked at the Munin stats on DSpace Test (linode02) again to see how the PostgreSQL tweaks from a few weeks ago were holding up:
![PostgreSQL connections month](/cgspace-notes/2017/12/postgres-connections-month.png)
![DSpace Test PostgreSQL connections month](/cgspace-notes/2017/12/postgres-connections-month.png)
- The results look fantastic! So the `random_page_cost` tweak is massively important for informing the PostgreSQL scheduler that there is no "cost" to accessing random pages, as we're on an SSD!
- I guess we could probably even reduce the PostgreSQL connections in DSpace / PostgreSQL after using this
- Run system updates on DSpace Test (linode02) and reboot it
- I'm going to enable the PostgreSQL `random_page_cost` tweak on CGSpace
- For reference, here is the past month's connections:
![CGSpace PostgreSQL connections month](/cgspace-notes/2017/12/postgres-connections-month-cgspace.png)