Date: Sat, 10 Dec 2011 17:42:01 -0800 From: Maksim Yevmenkin <maksim.yevmenkin@gmail.com> To: current@freebsd.org Subject: calling all fs experts Message-ID: <CAFPOs6oJvS9%2BjVgU611imCDGj6L9mEJpr5OhLa4OK4XB7NCd8Q@mail.gmail.com>
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Hello, i have a question for fs wizards. suppose i can persuade modern spinning disk to do "large" reads (say 512K to 1M) at a time. also, suppose file system on such modern spinning drive is used to store large files (tens to hundreds of megabytes). is there any way i can tweak the file system parameters (block size, layout, etc) to help it to get as close to "disk's sequential read rate" as possible. I understand that i will not be able to get 100MB/sec single client sequential read rate, but, can i get it into sustained 40-50MB/sec rate? also, can i reduce performance impact caused by "small reads" such as directory access etc. thanks, max
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