Bug #1908
closed
System looses the memory with time
0%
Description
It seams that with time the total amount of memory I see in top is getting less
and less with time until the system hangs.
The system hanged a couple of times and I didn't know why, but recently I
noticed that the system uses swap while I have 6G of memory and don't really do
anything with it. Top showed the total amount of memory less than I really have.
I rebooted and got to see the normal amount.
uname -a:
DragonFly chinua.zzz.umc8.ru 2.8-RELEASE DragonFly v2.8.2.16.gfc7bf0-RELEASE #7:
Fri Nov 5 16:15:04 MSK 2010
root@chinua.zzz.umc8.ru:/usr/obj/usr/src/sys/X86_64_GENERIC x86_64
dmesg.boot is in attach
I don't know what information is needed to trace the bug. Please ask. Thank you.
Files
Updated by zhtw over 13 years ago
On Sun, 14 Nov 2010 16:46:54 +0000, "Matthew Dillon \(via DragonFly
issue tracker\)" <bugs@crater.dragonflybsd.org> wrote:
Matthew Dillon <dillon@apollo.backplane.com> added the comment: The first
thing to do is to compile up the latest 2.8.x kernel in the release branch.
Your freezes are probably related to a console deadlock that we have fixed.
On swap use and memory use, we don't have enough information. 90% of the bug
reports related to memory use turn out to be misinterpretations of system
statistics, since DragonFly (like all BSDs) use all available free memory to
cache file data and drop the cache as memory is needed. If swap is growing
unbounded over time and you are seeing constant paging activity then it could
be a runaway process running on your machine, which you should be able to
locate using miscellanious system tools such as 'ps axl'.
-Matt
Thank you for your answer.
I am alreay using v2.8.2.16.gfc7bf0-RELEASE. Isn't it the latest 2.8.x
kernel?
Maybe you are right about misinterpretation of memory
statistics, because what I see in "top" now is:
Memory: 2978M Active, 1482M Inact, 1171M Wired, 215M Cache, 605M Buf,
62M Free
top
Total amount is 6513M which is more than I have:
dmesg.bootreal memory = 6440680448 (6142 MB)
avail memory = 6037917696 (5758 MB)
dmesg.boot
So now I'm not sure whether the number less than 6G indicates that
anything
is wrong ether.
Anyway I started to collect memory and swap statistics with munin,
so that next time it hangs I will see what happened in details.
--
Aleksej Lebedev
Updated by zhtw over 13 years ago
Memory is not the problem.
The system still hangs within ~2 days of use. I'll open another issue.