On Wed, 2017-10-11 at 21:24 +0800, Ed Greshko wrote:
On 10/11/17 20:26, Patrick O'Callaghan wrote:
> I installed the above kernel this morning and immediately experienced
> very noticeable delays in accessing websites (2 or 3 seconds each
> time), apparently caused by slow DNS lookups. The same happened when
> running a 'ping' from the Shell, so I don't think the browser (Chrome)
> is to blame.
>
> Rebooting with 4.13.4-200.fc26.x86_64 fixed the problem immediately.
>
> Anyone else notice this?
Examples of the sites you've tried? Whose DNS server are you using? If your ISP,
can you change to 8.8.8.8 (google's servers)?
Popular sites such as
www.nytimes.com and
www.theguardian.com. I took a
look at my router's config and saw that its DNS setting was set to
"dynamic". I assume that means uPnP or DHCP but I don't know where it
was pointing at. I changed it to 8.8.8.8 and 8.8.4.4 and rebooted the
new kernel. It seems to have improved but I'll keep an eye on it.
I don't see how a change of kernel could have affected this, unless
there's some subtlety in uPnP (or DHCP), but we'll see.
poc