On 20030204 (Tue) at 1558:28 +0000, Stephen C. Tweedie wrote: > Hi, > > On Tue, 2003-02-04 at 12:41, Matthias Andree wrote: > > > > ext3 is making it write much _more_ data. Due to the 5-second commit, > > > the application's redirtying and an ext3 gremlin. > > > So this means we write more data because ext3 commits quicker than the > > other file systems I tested and has less chance to kill old write > > requests that are overwritten because they were already flushed to disk? > > Then we really won't have much choice except quenching our overwrites as > > far as reasonable and try to improve locality of our operations. > > Or using data=writeback, or specifying a longer commit interval. I tried data=ordered,commit=120 and was surprised to find that it actually took longer than with the default 5 seconds; 9-and-a-half minutes to run Matthias's simbf program, as opposed to about seven-and-a-quarter. Using data=writeback certainly helps; that run takes eighteen seconds. -- | G r e g L o u i s | gpg public key: | | http://www.bgl.nu/~glouis | finger greg@bgl.nu | | Help free our mailboxes. Include | | http://wecanstopspam.org in your signature. | _______________________________________________ Ext3-users@redhat.com https://listman.redhat.com/mailman/listinfo/ext3-users
