Re: Latets yum thoroughly hosed?!

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George R Goffe wrote:
Howdy,

My two cents.

I'm having the same yum problem that everyone is/was having. I have
run these commands:

rpm -e sqlite-devel-3.3.3-1.i386 \ rpm-devel-4.4.2-13.i386
net-snmp-devel-5.3-3.i386

and then this one:

rpm -Uvh --oldpackage sqlite-3.3.2-1.i386.rpm

All appears to be cool now except that libneon is causing(?) a
missing dependency:

Error: Missing Dependency: libneon.so.24 is needed by package kdesvn
Error: Missing Dependency: libneon.so.24 is needed by package
openoffice.org-core

Not provided by any rpm?


The question about what's killing the yum process might be answered
by the presence of a "new" (new to the later 2.4 kernels anyway)
kernel option (I forget the exact terminology) "oom killer?". I
think it's either this "feature" (that made it into the 2.6 kernels
as a permanent fixture) or the system just running out of memory and
killing the process as part of a recovery. I let my system run for a
while (completely disabled apparently) when the "killed" message
appeared. On subsequent attempts to use yum I watched xosview and it
showed a steady increas in paging and swap and memory usage which
you might expect given the previous reports. I have a "strace -xvf
yum update" output file that shows what's happening. Of course you
have to have strace installed, apparently it does NOT come with a
"default" system install, whatever that is. Yum(?) or someone is
looping on a brk system call. I haven't analyzed the trace yet.

Thanks for the view regarding what is going wrong with the "feature" which seems to becoming more of a vulnerability with the systems instead of allowing tasks that own memory to continue using their allocated memory. The idea of a system killing processes in order to make more memory available for later run applications does not sound like rational reasoning. If this is the case, the latest application started should pause instead of killing previous processes. This problem with sqlite sounds similar to discussions related to bombing systems, where the system was put into a bad state by repeatdly starting processes in a loop. If this "feature is added to the kernel, the kernel needs to also limit saturation of swap or memory.

Just my thoughts regarding having even the possibility to down a system with OOM possibilities. Those that think that downing systems will surely enjoy the thrill of having Linux with this sort of vulnerability.

Jim


Regards,

George...

p.s., This group is GREAT!

--
Where do you want Bill Gates to go today?

   -- From a Slashdot.org post

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