Raspberry Pi

From Holyheads Wiki
Revision as of 21:54, 28 December 2013 by Holyhead (Talk | contribs)

Jump to: navigation, search

Contents

Cockbook

My collection of hints, tips and tricks (supporting my memory and maybe also helping others).

Mounting USB drives

  • Slow USB drive performance?
    • Mount with option 'noatime' or 'relatime'
    • Mount without option sync (e.g. keep default async)
    • Auto mount done by OpenElec: 
/dev/sda1 on /var/media/Holyhead type fuseblk (rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other,blksize=4096)

Samba server / NAS

  • Slow performance?
    • see 'Slow USB drives' above
    • use Raspbian, etc without GUI to get as much CPU power for file-transfer as possible (OpenELEC or RaspBMC constantly result in about 10-20% CPU load when idle, use top to check!)

Misc Q&A

  • Q: Why does my Pi restart when hotplugging a USB drive?
  • Q: Does Raspberry support WOL?
A: No: the Ethernet chip is connected via USB ([3])
  • Q: The new password is to short.
A: Try adjusting the PAM settings, see Google search for 'pam password minimum length'
  • Q: How to configure static IP?
A: In /etc/network/interfaces: 
 iface eth0 inet static
   address 192.168.0.31
   netmask 255.255.255.0
   gateway 192.168.0.1
  • Q: How to read core temperature, etc?
A: vcgencmd: $vcgencmd measure_temp

Things I might try sometime

  • Samba: try adjusting 'socket options' in (/etc/samba/smb.conf) to increase NAS performance: some websites recommend to disable the 'socket options', some recommend to set: 
socket options = TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=65536 SO_SNDBUF=65536
  • For NAS/Samba server: adjust memory split - smaller GPU memory for server

Some links

Blogs, forums, etc:

to be continued ...

Retrieved from "https://holyhead.de/index.php?title=Raspberry_Pi&oldid=26"
Personal tools