From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Taysom Date: Fri, 05 May 2006 11:12:37 -0600 Subject: [Ocfs2-devel] OCFS2 features RFC - separate journal? In-Reply-To: <445AC References: <20060425183553.GB10524@ca-server1.us.oracle.com> <445936FE.90401@google.com> <44594AE2.9080802@oracle.com> <44594EC9.3040407@google.com> <445A6A61.2090009@oracle.com> <445A7EF3.2000701@google.com> <20060504223037.GB21588@ca-server1.us.oracle.com> <445AC Message-ID: <445B32E4.C8CD.0002.0@novell.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: ocfs2-devel@oss.oracle.com The performance you might gain from a separate journaling device will be very dependent on exactly how the journal is done. On NSS, the Netware journaled file system, we ran experiments with the journal turned off (just didn't do the write) and found it had little impact on benchmarks like NetBench. Part of the reason for this is that the journal writes were asynchronous to the main flow of the system. Normal operations would normally not ever wait for journal writes. Paul _______________________________________________ Ocfs2- devel mailing list Ocfs2- devel at oss.oracle.com http://oss.oracle.com/mailman/listinfo/ocfs2- devel