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Questions tagged [throttling]

In networking, throttling is the intentional slowing or speeding of an Internet service.

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23 views

iperf/iperf3: Gigabit ISPs that do and don't throttle single connections [closed]

Even though we have a gigabit service, the ISP is limiting the speed of single connections to 300 Mb/s. This is evident from my tests against various iperf servers in Europe, which all show that a ...
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0answers
18 views

NGINX - Dynamic throttling of bandwidth

I am going to deploy a website with several big media files (~10 GiB) and I would like to balance the load on it. NGINX will be used to serve the files. What I would like to achieve is something that ...
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2answers
88 views

ICMP maximum delay between echo request and reply sustained by a router NAT

I was trying to slow down network on my server (arch linux vm) with netem sudo tc qdisc add dev eth0 root netem delay 1600ms With 1600ms delay client doesn't receive the echo reply packet though the ...
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1answer
115 views

How to protect a web application from IPv6 bots?

I'm interested in this in the context of protecting a web application from bots, but I guess it applies to all kind of attacks that can be done over IPv6 by bots. In a web application, you have some ...
1
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1answer
718 views

I can't get the cgroup blkio to throttle the iops of processes in a sub-cgroup

I can't get the cgroup blkio to throttle the iops of processes in a sub-cgroup. I am using CentOS 7, 3.10.0-229. I create the cgroup /sys/fs/cgroup/blkio/user.slice/test1 and do echo 8:32 10 > /...
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1answer
64 views

Possible causes for a single throttled UDP port

I am running a quake 3 engine based game server (Wolfenstein: Enemy Territory) on Ubuntu 16.04 and I've ran into a fairly puzzling issue. A week ago players started having issues when connecting to ...
12
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2answers
384 views

CentOS 6 router/firewall seems to be throttling throughput

TL;DR CentOS6 NAT router/firewall behind a 120Mbps cable modem connection seems to be capping throughput at 30Mbps after recent updates and security "hardening". Prior to updates and hardening I ...
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0answers
54 views

Enable Resource Governor

I have setup an SQL Server 2008 R2 SP1 in my infrastructure. One of my SQL jobs consumes much CPU usage and when this happens all other queries take too long to respond. After research I read about ...
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0answers
56 views

How to send a lot of emails without tripping the alarms

I need to send couple of thousand emails at once, all addresses are existing users of one domain. I was wondering if that would not cause receiving server to cry 'Spam!' at the sight of so many emails....
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2answers
1k views

How to workaround a IP whitelist when consuming a 3rd-party API?

We use a service who's API will reject requests unless the source IP has been previously whitelisted. They only give us 3 slots which is a problem because we have more than 3 machines that need to use ...
1
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1answer
109 views

Mysterious throttling on Linux Centos

I have inherited a Linux CentOS install running as a PPPOE server router for guest bandwidth to pass through for a unit block. Internet connectivity looks like this :- [DSLAM1]==10.20.20.0/24===.1[...
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0answers
471 views

What are the symptoms of an overloaded webserver

I'm maintaining some web crawlers. I want to improve our load/throttling system to be more intelligent. Of cause I look at response codes, and throttle up or down based on that. I would though like ...
0
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1answer
417 views

Apache ( OHS 12 c) for managing keep-alive sessions and provide a throttle for WebLogic protection

I need to use OHS 12C ( apache 2.2) for throttling purpose.I'm using OHS as proxy and forwarding request to weblogic server. The requirement is to limit the concurrent connection to weblogic server to ...
0
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0answers
337 views

Application Request Routing and Throttling

We have a set of WCF services that are proxying calls to another web service layer built on top of IBM WebSphere. The WebSphere setup is a black box to us, but we're told that we need to throttle ...
1
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1answer
4k views

Postfix seems too aggressive while sending newsletters

I'm having a problem sending newsletters to certain domains/servers, like yahoo or minor network providers. It's like I'm spamming their servers with connections and they tell me to stop after a short ...
4
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1answer
4k views

Exchange 2013 Throttling Policy with Windows Server Backup

We have an Exchange 2013 Server having issues after the daily backup procedure from Windows Server Backup. Clients (mainly ActiveSync devices) try to access the Exchange Server during the backup ...
2
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1answer
2k views

How can I reduce the response buffer size of the reverse proxy?

I have configured some reverse proxies in order to map some HTTP audio streams that are normally accessed via different port numbers (e.g. http://fooserver:18030), to URL addresses accessible on ...
1
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1answer
320 views

Throttling a user across multiple datacenters

I'm trying to implement a throttling feature on nginx, that is shared across multiple servers across multiple datacenters. I would like to know what would be the best practice for building this. For ...
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1answer
501 views

How to throttle AJP

On Windows i connect Apache2 to Tomcat7 via AJP. Is there any configuration that can throttle the communication? This is my workers.properties worker.list=node1 worker.node1.port=8009 worker.node1....
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2answers
1k views

How to prevent nginx throttling conflicting with maintenance mode?

We use the HttpLimitReqModule nginx mondule for rate throttling and have found that it conflicts with our "maintenance mode" because both components are using http status code 503. When throttling is ...
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2answers
483 views

Postfix: throttle incoming traffic to abused recipients

I'd like to implement per-recipient limits for incoming mail to our Postfix MX servers, but I don't know what to use to achieve that. Postfix docs and Google searches will only give me config recipes ...
2
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2answers
327 views

Easy Apache module to throttle requests based on machine load?

I have an Apache server that is serving a django application with mod_wsgi. I'm wondering if there is a simple way to throttle requests at the apache level based on the machine's load. Ideally I want ...
3
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2answers
2k views

Determine what machine/device is consuming bandwidth

I sometimes help a small office with a few issues. About two months ago, they were complaining of poor internet performance. Long story short, I found one person running Carbonite on a Mac that was ...
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2answers
664 views

Can a typical firewall appliance handle things like throttling requests per user (per IP)?

I'm intending to purchase a Cisco ASA 5510, but am wondering whether or not I should expect to be able to do things such as mentioned in the question title with a typical firewall (or specifically ...
1
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1answer
100 views

Configure trickle to add guestOS

I want to configure Trickle to prioritize my bandwidth with an installed app on ubuntu, I understand the basic config: [ssh] Priority = 1 Time-Smoothing = 0.1 Length-Smoothing = 1 [www] Priority = 2 ...
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5answers
17k views

How to throttle your own internet connection? [closed]

I am writing a website and want to test its speed on slower internet connections. I have the unfortunate first world problem of downloading at 100mbps, how can I throttle my own computer's internet ...
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1answer
6k views

Cisco ASA: Prevent any single internal host from saturating bandwidth of outside Internet interface

We have an ASA 5510 at the edge of our network connected to a 10Mb Internet pipe. All internal IPs are private so we have external and internal interfaces. I'd like to prevent any single internal host ...
0
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1answer
210 views

Dedicated Windows Server (16 GB Ram) hanging up when sending newsletter to 20,000 emails

Most of the times when we send out a newsletter (around 30 kb) to our mailing list of 20,000 emails the server hangs up. We use Mailenable to send out emails. The hosting provider has the following ...
1
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1answer
118 views

How to diagnose whether a customer's ISP is throttling access to my website?

We host a website that servers up mostly static files, such as html and flash SWF files. The server is hosted in Auckland, New Zealand. Our customers are mainly secondary/high-schools. In general, ...
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3answers
771 views

Disable gigabit ethernet throttling?

I've got two windows PCs connected by gigabit ethernet. When I use iperf to measure throughput it maxes out at a good 100MBit/s. When I run iperf using two or three parallel connections, each will ...
2
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1answer
586 views

Exim Throttling - how to setup exim to control email deliveries/hour to each ISP?

I couldn't find any resource about how to setup exim throttling. I needed to control email delivery flow respecting each ISP rate limits and guidelines. Can anyone point me some references on how to ...
5
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1answer
543 views

What outbound HTTP throttling solutions exist?

I am looking for a way to flexibly manage outbound HTTP/HTTPS traffic in a way that respect site policies, and could be deployed at the "edge" of our datacenter network. For example, we use several ...
0
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1answer
400 views

Throttling bandwidth for Apache on an Xserve (Mac OSX Server 10.5.8)

I was wondering if anybody has any solutions for throttling bandwidth on an Xserve (running Apache 2); I'm trying to use mod_bw (http://ivn.cl/category/apache/#bandwidth), but have been running into ...
28
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1answer
25k views

NGINX - throttle requests to prevent abuse

The reason I want to do this is because users develop against our API with JavaScript, and some developers screw up and cause visitors to slam the server with AJAX requests. When this happens, I want ...
0
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4answers
605 views

Are there any tools to throttle/aggregate multiple outgoing emails into a single email within some time window?

We're developing an application that runs on multiple hosts and emails notifications to us (the developers @gmail.com) whenever something goes wrong, via a postfix server. However, we've run into ...
7
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2answers
4k views

Does Mac OS X throttle the RATE of socket creation?

This may seem programming related, but this is an OS question. I'm writing a small high performance daemon that takes thousands of connections per second. It's working fine on Linux (specifically ...
0
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2answers
240 views

Detecting proxy server connections

We are having issues with users using proxy servers and causing trouble on our website. Is there an updated SQL list of proxy servers, indexed by IP, available anywhere so that we can query it and ...