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Update troubleshooting.markdown (#16227)

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* Update troubleshooting.markdown

added suggestion to increase swap memory if your system freezes during first run

* Update troubleshooting.markdown
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Nils154 2021-01-26 05:00:16 -06:00 committed by GitHub
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@ -43,3 +43,22 @@ For `iptables` systems (was the default for older distributions):
iptables -I INPUT -p tcp --dport 8123 -j ACCEPT
iptables-save > /etc/network/iptables.rules # your rules may be saved elsewhere
```
### System freezes
On small systems (such as a Pi2), not directly sypported by binaries (Python Wheels) you may run out of memory.
Upon the first run or after an upgrade, Home Assistant uses a lot of resources to (re)compile all the integrations.
If you run out of memory and/or swap memory, your system will freeze.
Increasing swap memory can help:
```bash
sudo dphys-swapfile swapoff
sudo nano /etc/dphys-swapfile
```
Modify the line the sets the swapfile size. Set it equal to your memory or double your current setting: `CONF_SWAPSIZE = 925` then:
```bash
sudo dphys-swapfile swapon
sudo systemctl restart dphys-swapfile.service
```