On Freitag, 22. Oktober 2010 Richard Ems wrote: > But, at which numbers should I look at before starting a defrag then? Watch the performance of your application. Record answer times with munin or something, and if you ever "feel" it's too slow, look at the recorded numbers again to see if your feelings fit the measurements. Don't be paranoid about fragmentation. The more people access a server at a time, the less important fragmentation is. If you got 100 people streaming 100 perfect defragmented files, you still got an access pattern that needs to move the disk head to 100 different positions all the time. If your single disk can't do that many I/O's, build up a RAID, or get faster disks (10kprm, 15krpm, SSD). Defrag is more for single threaded I/O workloads, where one stream at a time has to be read/written. Therefore it helps on a Windows PC more than on a server. Only use defrag if you really have lots of chunks per file. -- mit freundlichen Grüssen, Michael Monnerie, Ing. BSc it-management Internet Services http://proteger.at [gesprochen: Prot-e-schee] Tel: 0660 / 415 65 31 ****** Radiointerview zum Thema Spam ****** http://www.it-podcast.at/archiv.html#podcast-100716 // Wir haben im Moment zwei Häuser zu verkaufen: // http://zmi.at/langegg/ // http://zmi.at/haus2009/
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