On Jan 14, 2014, at 10:39, Tom Lane wrote:
> James Bottomley writes:
>> The current mechanism for coherency between a userspace cache and the
>> in-kernel page cache is mmap ... that's the only way you get the same
>> page in both currently.
>
> Right.
>
>> glibc used to have an implementatio
On Jan 13, 2014, at 19:03, Hannu Krosing wrote:
> On 01/13/2014 09:53 PM, Trond Myklebust wrote:
>> On Jan 13, 2014, at 15:40, Andres Freund wrote:
>>
>>> On 2014-01-13 15:15:16 -0500, Robert Haas wrote:
>>>> On Mon, Jan 13, 2014 at 1:51 PM, Kevin Grittne
On Jan 13, 2014, at 16:03, Robert Haas wrote:
> On Mon, Jan 13, 2014 at 3:53 PM, Trond Myklebust wrote:
>> O_DIRECT was specifically designed to solve the problem of double buffering
>> between applications and the kernel. Why are you not able to use that in
>
On Jan 13, 2014, at 15:40, Andres Freund wrote:
> On 2014-01-13 15:15:16 -0500, Robert Haas wrote:
>> On Mon, Jan 13, 2014 at 1:51 PM, Kevin Grittner wrote:
>>> I notice, Josh, that you didn't mention the problems many people
>>> have run into with Transparent Huge Page defrag and with NUMA
>>>
