On 18/03/2012 22:48, Steven Hartland wrote: > > ----- Original Message ----- From: "Dmitry Morozovsky" <[email protected]>
>> the simplest: dd if=/dev/ada0 of=/dev/null bs=1m count=16k (linear >> read 16g at the beginning of disk) >>> What value do you have for sysctl vfs.read_max? >> >> default for both cases, 8 > > Try 32 that's what we have here set here. vfs.read_max will only affect file system reads, not raw device reads.
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