-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Christian Paro wrote: > Also, note this line from the RedHat doc: > > *Note that this setting will only stay in effect until the next time the > machine is booted. If you wish this setting to be permanent, add the > following line to **/etc/sysctl.conf**:* > > vm.pagecache = 1 15 80* > >> Your answer might lie with */proc/sys/vm/pagecache:* >> * >> *http://kbase.redhat.com/faq/docs/DOC-7055 >> >> http://www.ibm.com/developerworks/linux/library/l-adfly.html >>
Note those documents are for a 2.4 kernel, not a 2.6 kernel, as used by redhat 5 and suse 10+. When I briefly looked into /proc/sys/vm/* on my 2.6 kernel systems things are much different. Any pointers to managing buffer and page caching behaviors on a 2.6 system? It sounds like a potentially promising approach. It doesn't address the full scope of the issue (z/vm would still rather like smaller guests where it's easier to bring all the necessary working sets in) but every little bit might be of help. disclaimer: every situation is different, test your own workloads, etc etc. - -- Pat -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (Darwin) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAkt0LHsACgkQNObCqA8uBsxFugCeNH84mRPtHyT6RaORr+z/n1Pc paEAmQGRpD3bJENvyjUSYlsVDDhHpjMS =lted -----END PGP SIGNATURE----- ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
