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by cpc464
Sat Apr 25, 2020 3:07 pm
Forum: Advanced users
Topic: RPi 4 heat sink - it made a difference !
Replies: 38
Views: 4650

Re: RPi 4 heat sink - it made a difference !

Cooling is kind of a performance issue, if it pushes the Pi into throttleback at any time. It places a lower limit on realizable performance. Some people need that performance. For me it is also a safety issue. I run a number of live web services on a Pi 2 cluster, which is active 24x7. It runs at 4...
by cpc464
Sat Apr 25, 2020 9:49 am
Forum: Advanced users
Topic: RPi 4 heat sink - it made a difference !
Replies: 38
Views: 4650

Re: RPi 4 heat sink - it made a difference !

72C with the heatsink on (and no fan)? Well, considering that is full load, its pretty acceptable. Certainly well short of the throttling zone. Some metal heatsink "cases" are advertised as giving "10C to 15C heat reduction under full load". However, ag123 achieved 10C merely wit...
by cpc464
Fri Apr 24, 2020 2:52 pm
Forum: Advanced users
Topic: RPi 4 heat sink - it made a difference !
Replies: 38
Views: 4650

Re: RPi 4 heat sink - it made a difference !

Hi jahboater, can you show the same test results but running without the heat sink?
by cpc464
Fri Apr 24, 2020 1:02 pm
Forum: Advanced users
Topic: RPi 4 heat sink - it made a difference !
Replies: 38
Views: 4650

Re: RPi 4 heat sink - it made a difference !

Stand the Raspberry Pi on its side without a case help a lot: https://www.raspberrypi.org/blog/free-raspberry-pi-4-cooling-stand-with-the-magpi-90/ https://www.seeedstudio.com/blog/2019/11/29/raspberry-pi-4-firmware-update-pi-4-now-runs-cooler-than-ever/ Yes I know about these. What I liked about a...
by cpc464
Fri Apr 24, 2020 10:13 am
Forum: Advanced users
Topic: RPi 4 heat sink - it made a difference !
Replies: 38
Views: 4650

Re: RPi 4 heat sink - it made a difference !

Hi ag123

This is great. I want my Pi4 to run cooler but don't want a fan. Passive cooling by 5C when idle / 10C when pushed is definitely worth having. Where did you get the heat sink ?

Jim.
by cpc464
Fri Apr 24, 2020 9:58 am
Forum: General discussion
Topic: Get your Pi to fight COVID-19
Replies: 194
Views: 17958

Re: Get your Pi to fight COVID-19

Because with a closed package you don't known what they're doing. They could be turning your RPi into a spam spewing botnet. Also why do I need this, if I want to run Rosetta why would I chose this rather than doing it myself with my own Rosetta account. Quite so. If they bunged it into a docker im...
by cpc464
Fri Apr 24, 2020 9:48 am
Forum: General discussion
Topic: Raspberry Pi 4 NAS
Replies: 21
Views: 2007

Re: Raspberry Pi 4 NAS

Hi OP

Glad that a reboot fixed this. The slow speeds you were getting were pretty insane. I tested a Pi 4 for NAS use and got over 60 MB/s write, over 100 MB/s read. So it's pretty nimble, to say the least.

Jim
by cpc464
Fri Apr 24, 2020 9:38 am
Forum: Networking and servers
Topic: New Article: Install Docker on Raspberry Pi
Replies: 0
Views: 701

New Article: Install Docker on Raspberry Pi

Hi, I have published a new article explaining how to install Docker on a Raspberry Pi, create a Docker image and run a simple container: http://unixetc.co.uk/2020/04/24/install-docker-on-raspberry-pi/ As an example, the Docker container is used to run Comskip, the video processing package. It is an ...
by cpc464
Tue Apr 21, 2020 2:01 pm
Forum: Media centres
Topic: New Article: How to Watch and Record Live TV with a Raspberry Pi
Replies: 8
Views: 4745

Re: New Article: How to Watch and Record Live TV with a Raspberry Pi

Hi Kreeture. Channel changes takes a maximum of 4 seconds. Often it is quicker. Yes, I find ti quite bearable. I have been using the Pi/OSMC setup for 6 months now. It is reliable and a good replacement for the Topfield.
by cpc464
Wed Apr 08, 2020 10:29 am
Forum: Media centres
Topic: TVHeadend won't record onto attached SSD Drive.
Replies: 28
Views: 5696

Re: TVHeadend won't record onto attached SSD Drive.

mihailolja wrote:
Wed Dec 04, 2019 11:38 am
Have just noticed the coincidence!!!

:D
:) Thanks for reading!
by cpc464
Wed Apr 08, 2020 10:19 am
Forum: General discussion
Topic: Updated for Pi 4 / Buster: Simple Nextcloud Installation on Raspberry Pi
Replies: 5
Views: 31256

Re: Updated for Pi 4 / Buster: Simple Nextcloud Installation on Raspberry Pi

Hi mattani sorry for not coming back. For the record, if you put questions under the blog article, I try to respond straight away.

Several Nextcloud users have complained of not seeing the button to create new users. If it is still a problem, please post a response to the article.
by cpc464
Wed Apr 08, 2020 10:13 am
Forum: Networking and servers
Topic: Setting Up WAN Access to RPi4
Replies: 2
Views: 443

Re: Setting Up WAN Access to RPi4

Hi OP, not sure what is meant by "2 routers in series", but only one of them will be connected to the Internet, and this is where the port should be forwarded. For testing, stop the Pis firewall altogether (but reinstate after everything is working). Regardless of DNS name, you can check i...
by cpc464
Wed Apr 08, 2020 10:07 am
Forum: Networking and servers
Topic: Pi 4 as a NAS: USB3 speeds
Replies: 15
Views: 33595

Re: Pi 4 as a NAS: USB3 speeds

I too did some extensive testing with the Pi4 as a NAS. Speeds achieved were: reading - well over 100 MB/s, saturates gigabit network writing - about 70 MB/s. Still very good. http://unixetc.co.uk/2019/07/07/raspberry-pi-4-real-world-tests/ I would recommend XFS for the file system. It achieved fast...
by cpc464
Wed Apr 08, 2020 9:46 am
Forum: General discussion
Topic: Hosting a Webserver on the Raspberry Pi
Replies: 17
Views: 1453

Re: Hosting a Webserver on the Raspberry Pi

Hi Dave Triad, did you also update the "site address" and "Wordpress address" (Wordpress -> settings -> general) to reflect your URL ? FWIW I have been running a Wordpress blog on a Pi2 hosted at home for many years. It is fine with a 10 Mb/s upload speed, and was also fine when ...
by cpc464
Wed Apr 08, 2020 9:32 am
Forum: General discussion
Topic: RPi4 video performance
Replies: 67
Views: 16570

Re: RPi4 video performance

The Pi4 is a performance beast, and should operate as a media centre without lifting a finger. About 6 months ago my ageing Topfield PVR was replaced with a Pi2 media centre running OSMC/Kodi. The results have been excellent and performance fine, even with a Pi2. It does live TV/Recording/Youtube/Ne...
by cpc464
Wed Apr 08, 2020 9:16 am
Forum: General discussion
Topic: I need help Raspberry Pi Nas setup
Replies: 4
Views: 690

Re: I need help Raspberry Pi Nas setup

I would prefer the multi-disk unit pictured by ejolson. These might come with their own configurable raid etc., but will blow your budget. Within budget, you can connect, say 2 x 1TB USB disks and use Linux's built in LVM software to create eg. a mirrored pair. Create as many LVM volumes as you want...
by cpc464
Wed Apr 08, 2020 8:57 am
Forum: General discussion
Topic: Poor practice to read from .txt file multiple times a minute?
Replies: 25
Views: 1408

Re: Poor practice to read from .txt file multiple times a minute?

As others have said, unless the file(s) is huge, it will be buffered in RAM anyway, so no problem. The system itself is doing this with many files, eg. log files that are frequently appended. Doing something once a minute is possible with cron but for something this frequent, it might be better done...
by cpc464
Mon Mar 16, 2020 8:39 pm
Forum: Media centres
Topic: New Article: http://unixetc.co.uk/2020/03/16/how-to-install-comskip-on-a-raspberry-pi/
Replies: 0
Views: 2163

New Article: http://unixetc.co.uk/2020/03/16/how-to-install-comskip-on-a-raspberry-pi/

Hi, I have just published a new article explaining how to install Comskip on a Raspberry Pi and integrate it with OSMC/Kodi/TVheadend. "Comskip" is a program to automatically skip commercial breaks when you watch TV recordings. http://unixetc.co.uk/2020/03/16/how-to-install-comskip-on-a-ra...
by cpc464
Wed Mar 11, 2020 2:16 pm
Forum: Networking and servers
Topic: Updated: Install Wordpress Blog on Raspberry Pi
Replies: 0
Views: 352

Updated: Install Wordpress Blog on Raspberry Pi

Hi, The above procedure has been updated for Raspbian 10/Buster. http://unixetc.co.uk/2013/09/25/install-wordpress-blog-on-raspberry-pi/ It explains how to self host your own blog using a Raspberry Pi. It has been modified today. Changes include using Mariadb over MySQL, and installing various PHP m...
by cpc464
Wed Mar 11, 2020 2:02 pm
Forum: Media centres
Topic: New Article: How to Watch and Record Live TV with a Raspberry Pi
Replies: 8
Views: 4745

Re: New Article: How to Watch and Record Live TV with a Raspberry Pi

Sorry for the late reply mihailolja but good luck!

I used the dual Hauppauge tuner mentioned in the article (about £60 from Amazon). It contains two tuners and picks up both SD and HD. I was going to add more tuners, but 2 seems enough, so far.

Jim
by cpc464
Tue Dec 03, 2019 10:45 pm
Forum: Advanced users
Topic: How to protect a brand new Rpi4
Replies: 5
Views: 1044

Re: How to protect a brand new Rpi4

The web port 80 should be secure enough, as long as you are (a) running a simple static web page on there, or (b) running a popular package (eg. Wordpress or similar) and keeping it up to date, ie. regularly patched.

The VPN I guess will depend on the VPN software.
by cpc464
Tue Dec 03, 2019 7:38 pm
Forum: Advanced users
Topic: Is it possible to stream TV channels or HDMI from set top box to remote location over internet ?
Replies: 2
Views: 615

Re: Is it possible to stream TV channels or HDMI from set top box to remote location over internet ?

Yes it is possible, but I haven't yet found a way of doing it securely. So it is not advisable. I use a Pi 2 with OSMC and TVHeadend to watch TV, and to stream it around my home network. I wrote a procedure for the setup here: http://unixetc.co.uk/2019/11/22/how-to-watch-and-record-live-tv-with-a-ra...
by cpc464
Tue Dec 03, 2019 7:30 pm
Forum: Advanced users
Topic: How to protect a brand new Rpi4
Replies: 5
Views: 1044

Re: How to protect a brand new Rpi4

Hi Dan

What ports are being forwarded from your router ?

Jim
by cpc464
Tue Dec 03, 2019 7:27 pm
Forum: Troubleshooting
Topic: Out of memory error on RPi 4 when there's memory
Replies: 13
Views: 3751

Re: Out of memory error on RPi 4 when there's memory

Hi OP,

See if you can run these commands when memory is becoming short (but before the oom killer runs). The output should show which processes are taking most memory. To confirm that rsync / dd really is the culprit.

ps -elf | sort -n -k 10

top -b -n 1

free -m
by cpc464
Tue Dec 03, 2019 7:11 pm
Forum: Media centres
Topic: TVHeadend won't record onto attached SSD Drive.
Replies: 28
Views: 5696

Re: TVHeadend won't record onto attached SSD Drive.

Hi About the recording path, somebody mentioned linking it from the default . It is a good idea to do this anyway, so that in the future, if you change the disk, you can just re-create the link instead of having to alter the TVH/Libelec configuration. A new disk will likely mount itself under /media...

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