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[Bug malloc/21273] insufficient memory with more then 10 GB free memory


https://sourceware.org/bugzilla/show_bug.cgi?id=21273

dieter ferdinand <dieter.ferdinand at gmx dot de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |UNCONFIRMED
         Resolution|INVALID                     |---

--- Comment #6 from dieter ferdinand <dieter.ferdinand at gmx dot de> ---
hello,
i make some tests on my testsystem and use 5 gb with chromium and this system
has 7 gb usable memory and no swap.

on my master server, i make the same test and i get some out of memory messages
and the tool i need reports max 4,5 GB used ram. i restart firefox and it
crashed.
and same other programs to.
this system have 16GB ram and 8 GB swap.
if i try to reserve 5gb memory with memtester i get out of memory and i have
more then 10gb available ram and mor the 7gb free swapspace.

i can't find out why i can use on my masterserver only 25-30% of the physical
ram.

i make the tests on both systems with 64bit kernel 4.9.23 and on the
test-system with a 32bit kernel 3.18.47. i use on both system chromium 32 bit.

i have opened on my master-system many tabs in chromium, exit it and start it
again and it is crashed.

if i open chromium and open many tabs, no problem. but if i start chromium and
it restore the tabs -> out of memory, can't fork -> chromium crash!

only on my testsystem chromium don't crash. but i can make some tests again.

i try to reserve memory with memtester and i can reserve 4,5 GB on my server so
i use a little more as 8 gb. but this is impossible with other applications. i
get always out of memory or resource not available, can't fork. i have less
then 650 processes running. on testsystem less then 250 processes.

but i can't make such tests on my server because it can kill importent
programms.

i make the tests on identical systems, i copy the system from my server to the
system. only in etc are differences because i don't want it to start the same
processes as my server and other processes can't be started with the
configuration of the server.

if i was not crazy, this will drive me crazy!

why can i use on a system with 8 gb physical ram and 7 gb usable ram more
memory as on a system with 16GB physical and usable ram ?

goodby

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