in one default UFS filesystem we have 8K block size (bsize) and 1K fragmentsize (fsize). At this scenary I thought all "FileSytem IO" will be 8K (or greater) but never smaller than the fragment size (1K). If a UFS fragment/blocksize is allwasy several ADJACENTS sectors on disk (in a disk with sector=512B), all "physical disk IO" it will allways, like "Filesystem IO", greater than 1K.
But with dtrace script from DTrace Toolkit (bitesize.d) I can see IO with 512B size.
¿What is wrong in my assumptions or what is the explanation?
Thank you very much in advance!!
Like Jim has indicated me in unix.com forum,
That cross-post thread happens to be:
You could have pasted the URL to be polite ...