6 ms·

A friendly tour of process memory on Linux

246 points by 0xkato 11mo ago

sleepytimetea 11mo ago
Website blocked as a threat/unsafe domain.
- drbig 11mo ago
  False alarm.
- 0xkato 11mo ago
  lol
- offmycloud 11mo ago
  What browser blocked it?
  - foobiekr 11mo ago
    Umbrella seems to be blocking it, for one.
- jeroenhd 11mo ago
  Sounds like your security software is broken. https://www.virustotal.com/gui/url/9e0c8d513f58a8053284b8145050f3b86ff4a33866dad115d6dc2676e00d3f81?nocache=1 https://www.virustotal.com/gui/url/9e0c8d513f58a8053284b8145...
- icedchai 11mo ago
  Are you on your work laptop? Your corporate IT "security theater" department may not recognize .xyz as a valid TLD.
drbig 11mo ago
Instruction pipelining and this is exactly why I wish we still have the time to go back to "it is exactly as it is", think the 6502 or any architecture that does not pretend/map/table/proxy/ringaway anything. That, but a hell lot of it with fast interconnect! ... one can always dream.
- ojbyrne 11mo ago
  The article is essentially describing virtual memory (with enhancements) which predates the 6502 by a decade or so.
  - Delk 11mo ago
    IMO it's not even quite right in its description. The first picture that describes virtual memory shows all processes as occupying the same "logical" address space with the page table just mapping pages in the "logical" address space to physical addresses one-to-one. In reality (at least in all VM systems I know of) each process has its own independent virtual address space.
- taeric 11mo ago
  I'm curious how this dream is superior to where we are? Yes, things are more complex. But it isn't like this complexity didn't buy us anything. Quite the contrary.
  - harry8 11mo ago
    > ...buy us anything. Totally depends on who "us" and isn't. What problem is being solved etc. In the aggregate clearly the trade off has been beneficial to the most people. If what you want to do got traded, well you can still dream.
    - taeric 11mo ago
      Right, but that was kind of my question? What is better about not having a lot of these things? That is, phrasing it as a dream makes it sound like you imagine it would be better somehow. What would be better?
      - layer8 11mo ago
        Things would be simpler, more predictable and tractable. For example, real-time guarantees (hard time constraints on how long a particular type of event will take to process) would be easier to provide.
selasa67118 11mo ago
[dead]
mhavelka77 11mo ago
"mmap, without the fog" I don't know if this is just me being paranoid, but every time I see a phrase like this in an article I feel like it's co-written by an LLM and it makes me mad...
- puika 11mo ago
  The article does feel like Gemini when you ask it to explain you something in layman terms, but co-authored by chatgpt with nonsense like "without the fog".
sanskarix 11mo ago
[dead]
- paulf38 11mo ago
  In what way are the error reports "just noise"?
ramon156 11mo ago
I love these tiny explainers! Even if I already know what it's about, having a confirmation helps throughout reading.

246 points by 0xkato 11mo ago

sleepytimetea 11mo ago

Website blocked as a threat/unsafe domain.

drbig 11mo ago
False alarm.
0xkato 11mo ago
lol
offmycloud 11mo ago
What browser blocked it?
- foobiekr 11mo ago
  Umbrella seems to be blocking it, for one.
jeroenhd 11mo ago
Sounds like your security software is broken. https://www.virustotal.com/gui/url/9e0c8d513f58a8053284b8145050f3b86ff4a33866dad115d6dc2676e00d3f81?nocache=1 https://www.virustotal.com/gui/url/9e0c8d513f58a8053284b8145...
icedchai 11mo ago
Are you on your work laptop? Your corporate IT "security theater" department may not recognize .xyz as a valid TLD.

drbig 11mo ago

Instruction pipelining and this is exactly why I wish we still have the time to go back to "it is exactly as it is", think the 6502 or any architecture that does not pretend/map/table/proxy/ringaway anything. That, but a hell lot of it with fast interconnect! ... one can always dream.

ojbyrne 11mo ago
The article is essentially describing virtual memory (with enhancements) which predates the 6502 by a decade or so.
- Delk 11mo ago
  IMO it's not even quite right in its description. The first picture that describes virtual memory shows all processes as occupying the same "logical" address space with the page table just mapping pages in the "logical" address space to physical addresses one-to-one. In reality (at least in all VM systems I know of) each process has its own independent virtual address space.
taeric 11mo ago
I'm curious how this dream is superior to where we are? Yes, things are more complex. But it isn't like this complexity didn't buy us anything. Quite the contrary.
- harry8 11mo ago
  > ...buy us anything. Totally depends on who "us" and isn't. What problem is being solved etc. In the aggregate clearly the trade off has been beneficial to the most people. If what you want to do got traded, well you can still dream.
  - taeric 11mo ago
    Right, but that was kind of my question? What is better about not having a lot of these things? That is, phrasing it as a dream makes it sound like you imagine it would be better somehow. What would be better?
    - layer8 11mo ago
      Things would be simpler, more predictable and tractable. For example, real-time guarantees (hard time constraints on how long a particular type of event will take to process) would be easier to provide.

selasa67118 11mo ago

[dead]

mhavelka77 11mo ago

"mmap, without the fog" I don't know if this is just me being paranoid, but every time I see a phrase like this in an article I feel like it's co-written by an LLM and it makes me mad...

puika 11mo ago
The article does feel like Gemini when you ask it to explain you something in layman terms, but co-authored by chatgpt with nonsense like "without the fog".

sanskarix 11mo ago

[dead]

paulf38 11mo ago
In what way are the error reports "just noise"?

ramon156 11mo ago

I love these tiny explainers! Even if I already know what it's about, having a confirmation helps throughout reading.