[Bugme-new] [Bug 8947] New: [wish] reduce disk usage at point of memory exhaustion

bugme-daemon at bugzilla.kernel.org bugme-daemon at bugzilla.kernel.org
Mon Aug 27 11:19:31 PDT 2007


http://bugzilla.kernel.org/show_bug.cgi?id=8947

           Summary: [wish] reduce disk usage at point of memory exhaustion
           Product: Memory Management
           Version: 2.5
     KernelVersion: 2.6.18.2
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Other
        AssignedTo: akpm at osdl.org
        ReportedBy: bluedzins at wp.pl


Distribution: OpenSUSE 10.2
Software Environment: no swap enabled (for reason), 2GB RAM
Problem Description:

The original report can be found here:
https://bugzilla.novell.com/show_bug.cgi?id=192705
however then I was referring to the disk usage as to swapping.

The problem is when hard-computing some stuff when I need every bit from my
memory. At the point of memory exhaustion there is really bad, heavy disk
usage, the whole system freezes (it could for long) and then the process is
killed.

I don't know if it is the smallest possible program to show the problem, but:
https://bugzilla.novell.com/attachment.cgi?id=93743

Compile, run, wait and suffer :-)

I don't know what exactly is going on when the disk is used but I would like to
see either a way to block it or smarten things up. I would like also to
understand the reason, because so far we can rule out swapping (I don't have
one), so does system writes something on disk (what? and where? and why?) or
reads something (again, in such situation nothing should be read, after all
free memory is decreasing at that point).


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