Messages in this thread | | | Date | Thu, 30 Dec 1999 17:07:56 +0100 | From | Marcin Dalecki <> | Subject | Re: almost too ashamed to ask; drive read-ahead & rz1000 |
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Folkert van Heusden wrote: > > Question; is de read-ahead of the rz1000 chipset (on p90 plato > mobo's) the same as the read-ahead you can swith on with hdparm > -A1? Or is the last one for the harddisk itself? (-> that it is > reading ahead in its own internal buffers or something) > If it's not for the harddisk, but specifically for the chipset; > I might have solved the fs corruption I saw with 2.2.12 on my > P90 :-)
Genreally there two kind's of read ahead in linux:
1. On the file system level the kernel is maintaining a readahead himself.
2. And yes there is a readahead on the controller level, which is basically describing how many sectors the HD's controller will read in advance into his own cache.
--Marcin
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