Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
/ 2006-09-13 17:43:07 +0300 \ Cyril Bouthors: > On 13 Sep 2006, Lars.Ellenberg at linbit.com wrote: > > > should not be too much, because we (drbd) go through a lot of > > trouble to minimize access to that area anyways (tunable: > > al-extents). > > Good > > > and because, if we do, we typically write one sector worth of data, > > so it is not normally the bandwidth, but the latency that is the > > problem. the "inner tracks" won't really decrease latency. > > On a typical half empty and non-fragmented filesystem, the data is > stored on the first part of the hard-disk, when DRBD writes its > meta-data at the end of the hard-disk, the head goes through an > average longer distance than if it was at the beginning and hence > average latency goes down. on a different spindle ... well, we are already nitpicking here, anyways. -- : Lars Ellenberg Tel +43-1-8178292-0 : : LINBIT Information Technologies GmbH Fax +43-1-8178292-82 : : Schoenbrunner Str. 244, A-1120 Vienna/Europe http://www.linbit.com : __ please use the "List-Reply" function of your email client.