[Beowulf] 188.8.131.52 out - fixes VM regression
csamuel at vpac.org
Tue Jun 24 22:02:13 EDT 2008
# The 184.108.40.206 stable kernel update is available.
# This one contains a relatively small set of patches;
# one of them might be security-related, and another
# addresses a serious virtual memory performance regression
The problem is explained in a previous version of the patch:
# In particular, the removal of ZERO_PAGE effectively
# removed the core file writing optimization where we
# would skip writing pages that had not been populated
# at all, and increased memory pressure a lot by allocating
# all those useless newly zeroed pages.
Christopher Samuel - (03) 9925 4751 - Systems Manager
The Victorian Partnership for Advanced Computing
P.O. Box 201, Carlton South, VIC 3053, Australia
VPAC is a not-for-profit Registered Research Agency
Beowulf mailing list, Beowulf at beowulf.org
To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.
More information about the Beowulf