Gentoo Archives: gentoo-user

From: Grant <emailgrant@×××××.com>
To: Gentoo mailing list <gentoo-user@l.g.o>
Subject: Re: [gentoo-user] Re: TCP Queuing problem
Date: Wed, 21 Sep 2016 20:47:39
Message-Id: CAN0CFw0nfmWg-R8AaOFi-oukA9BEMJArR3+jx-Ur7_wOGuQKZg@mail.gmail.com
In Reply to: [gentoo-user] Re: TCP Queuing problem by Kai Krakow
1 >> I haven't mentioned it yet, but several times I've seen the website
2 >> perform fine all day until I browse to it myself and then all of a
3 >> sudden it's super slow for me and my third-party monitor. WTF???
4 >
5 > I had a similar problems once when routing through a IPsec VPN tunnnel.
6 > I needed to reduce MTU in front of the tunnel to make it work
7 > correctly. But I think your problem is different.
8
9
10 I'm not using IPsec or a VPN.
11
12
13 > Does the http server backlog on the other side? Do you have performance
14 > graphs for other parts of the system to see them in relation? Maybe
15 > some router on the path doesn't work as expected.
16
17
18 I've attached a graph of http response time, CPU usage, and TCP
19 queueing over the past week. It seems clear from watching top, iotop,
20 and free than my CPU is always the bottleneck on my server.
21
22 - Grant

Attachments

File name MIME type
tcp-queueing.png image/png
cpu.png image/png
response-time.png image/png

Replies

Subject Author
Re: [gentoo-user] Re: TCP Queuing problem Michael Mol <mikemol@×××××.com>
[gentoo-user] Re: TCP Queuing problem Kai Krakow <hurikhan77@×××××.com>