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  • 0 posts edited
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  • 38 votes cast
Oct
13
revised What does it mean when a private VM page is none of `rwx`?
added 249 characters in body
Oct
13
comment What does it mean when a private VM page is none of `rwx`?
@Gilles seems like it's padding (relevant macro is HEAP_MAX_SIZE). Having that keyword I could find something relevant. And what is funny is that you have edited that question as well! :-D stackoverflow.com/q/6568043/251311
Oct
11
comment What does it mean when a private VM page is none of `rwx`?
It's not a mapping from a shared library since it does not have a corresponding fd attached. It's a custom long running C++ daemon, but I found some other processes have similar usage patterns: eg erlang (which also has plenty of them). In contrast long running php-fpm and python processes have literally 0 of such segments. "What other mappings does it have?" --- everything else is kind of expected and usual: just normal r/w private segments and shared libraries.
Oct
11
comment What does it mean when a private VM page is none of `rwx`?
@Gilles I've run through the links in your answer (especially the greenend.org.uk/rjk/tech/dataseg.html which is a gem), do you think it has the same nature as with shared libraries? Eg: it's done by a linker (or something else) to enforce placement of something separated from something else? My extremely limited understanding of memory management allows me understand why it can be helpful for a shared library case, but here it's an anonymous private page. Do you think it's the case here as well?
Oct
11
asked What does it mean when a private VM page is none of `rwx`?
Oct
8
awarded  Announcer
May
10
comment Why isn't apt-cache policy output piped?
Oh god, there is no +50 bounty option anymore :-(
May
9
awarded  Nice Question
May
7
accepted Why isn't apt-cache policy output piped?
May
7
awarded  Self-Learner
May
7
awarded  Teacher
May
7
answered Why isn't apt-cache policy output piped?
May
7
comment Why isn't apt-cache policy output piped?
Btw, I also was pointed by someone to the same point in sources just few minutes ago :-) And a potentially better solution script -c "sudo apt-cache policy foo" | grep Unable which requires installing a script though. As advised - I will put +50 here in 2 days (SE does not let to do it earlier)
May
6
comment Why isn't apt-cache policy output piped?
Okay. Any way to capture them both?
May
6
revised Why isn't apt-cache policy output piped?
added 162 characters in body
May
6
comment Why isn't apt-cache policy output piped?
@MohsenPahlevanzadeh not it's not equal (not even close)
May
6
comment Why isn't apt-cache policy output piped?
@MohsenPahlevanzadeh so? I'm sorry, but are you sure you have read the question (and the title)?
May
6
revised Why isn't apt-cache policy output piped?
added 130 characters in body
May
6
comment Why isn't apt-cache policy output piped?
@MohsenPahlevanzadeh that's right, now try the exact call (package name) I provided :-)
May
6
revised Why isn't apt-cache policy output piped?
added 85 characters in body