Buffers

[tlchan1653]

The title of my post is only one word, but I'll expand on it pretty quick.

I was doing some reading about the /proc filesystem on kernel.org.
One of the items that I wanted to explore was the file meminfo. While
reading about the fields of information, I wanted to explore exactly what
the Buffers number actually referred to:

Buffers: Relatively temporary storage for raw disk blocks

I was hoping that explanation would provide me something about the
type of buffer, but that little blurb is all the kernel.org document provided.
Well, probing in other places, I definitely reacquainted myself with the
types of buffers in a Linux system:
- I/O
- filesystem
- kernel ring
- network ring
- socket
- TCP
- system
- etc.

What's prompting this post are the following queries:

1) Is there an actual buffer known as the "system" buffer? If so, how
do I go about displaying its value?

2) How do I display the value of the "network" buffer?

3) How do I go about changing/modifying the value of the "network"
buffer?


Thanks in advance for any information can provide.

 

[KGIII]

I've read about playing with network buffers but have never been in a position where I needed to actually learn about it. With that in mind, I hit up a search engine. Of the sites I skimmed, this looks like it may at least satisfy that question.

https://www.cyberciti.biz/faq/linux-tcp-tuning/

 

[tlchan1653]

I've read about playing with network buffers but have never been in a position where I needed to actually learn about it. With that in mind, I hit up a search engine. Of the sites I skimmed, this looks like it may at least satisfy that question.

https://www.cyberciti.biz/faq/linux-tcp-tuning/

Thanks for the reply KGIII. Before I posted my query, I had seend
similar content in other articles. Part of my dilema is the reference
to "TCP" buffer, instead of "Network" buffer. As you may know, there
is also a buffer for "UDP". So, this only adds to my concern/confusion.

Again, many, many thanks for taking the time to provide me the
information. I'll continue to drill down on this thing until I can get
definitive, concrete information.

Happy 2023 to you!!!

 

[KGIII]

Again, untried. I'm just using a search engine.

Increase OS UDP Buffers to Improve Performance

Linux places very restrictive limits on the performance of UDP protocols by limiting the size of the UDP traffic that is allowed to buffer…

medium.com

I've known about the capability, but (again) I've never needed to mess with it. it seems to be just fine on its own - for *my* needs. I don't even mess about with it on my servers, not even my public facing stuff. Then again, my needs are pretty simple.