Bug 38950 - Kernel shared memory is 0 used or reported by kernel 2.4.2-2 causing memory and swap bloat
Summary: Kernel shared memory is 0 used or reported by kernel 2.4.2-2 causing memory a...
Status: CLOSED NOTABUG
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: kernel (Show other bugs)
(Show other bugs)
Version: 7.1
Hardware: i386 Linux
medium
high
Target Milestone: ---
Assignee: Arjan van de Ven
QA Contact: Brock Organ
URL:
Whiteboard:
Keywords:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2001-05-03 14:05 UTC by Robert J. Osborne
Modified: 2007-04-18 16:33 UTC (History)
0 users

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Environment:
Last Closed: 2001-05-03 14:05:42 UTC
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


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Description Robert J. Osborne 2001-05-03 14:05:38 UTC
From Bugzilla Helper:
User-Agent: Mozilla/4.76 [en] (X11; U; Linux 2.4.2-2 i686)

Description of problem:
Kernel 2.4.2-2 fails to use shared memory between processes, causing
unusually high need for memory.

How reproducible:
Always

Steps to Reproduce:
free
or
cat /proc/meminfo | grep MemShared
or
top

Actual Results:  Report no shared memory- no matter what is loaded or how
many times something is loaded...

Expected Results:  Memory should be shared between processes using the same
read-only segments.

Additional info:

This is a stock RH7.1 install on a cheezy Dell i810 chipset P3 w/ 128MB
ram.

This bug is evident on every 7.1 install I've checked at work (webserver,
two desk-tops.)

I'm dumbfounded nobody has reported this one...

Comment 1 Arjan van de Ven 2001-05-03 14:13:43 UTC
It's just that the 2.4 kernel no longer accounts this as this was a very
expensive operation. memory _IS_ shared however.



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