ahci hangs on Supermicro MicroCloud second channel

[Ivan Voras]

On 18/03/2012 22:48, Steven Hartland wrote:
> 
> ----- Original Message ----- From: "Dmitry Morozovsky" <marck at rinet.ru>

>> 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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