On Nov 22 Wen-han Goh wrote: >If I understand correctly, full journalling mode gives better >performance for applications that do a lot of updates in O_SYNC. Could >you please explain how this is possible? Doesn't full data journalling >do twice as many writes as meta data journalling? Yes it does; however, once the data is in the journal the O_SYNC caller can continue. With other modes you have to wait until the journal is committed, and all the extra seeks that may ensue... Matt _______________________________________________ Ext3-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ext3-users