Questions tagged [lag]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
0 votes
0 answers
200 views

Mysql 5.7 slave poor performance with 5.6 master

We recently reinstalled 3 of our mysql servers running in master slave with percona 5.7 and ubuntu 18.04 instead of oracle linux 7. These servers are currently connected to a mysql 5.6 master. And ...
user avatar
1 vote
0 answers
700 views

Network interface is down then is up with different speed

i have a HP ProLiant server with 4 physical network ports. eth0 and eth1 are bonded together. today we faced a lag in our services, turned out that eth0 was down then up with 1000Mbps speed then went ...
user avatar
0 votes
1 answer
47 views

What is the fastest posible way to comunicate to a server on Amazon EC2?

I need to communicate via WebSockes and normal HTTP. I am trying to save some microseconds. I have already done: I got an instance at the same Amazon EC2 zone. The ping is 1 millisecond. I have ...
user avatar
9 votes
1 answer
5k views

SSH "lag" in LAN on some machines, mixed distros [closed]

I've had a strange problem with SSH connections inside my LAN for a few months. It only happens when I'm using my Windows 10 device to connect to a (barebone) linux machine. When I connect to a SSH ...
user avatar
  • 333
1 vote
0 answers
133 views

Bonding on centos only and switch without LAG enabled vs Bonding on centos and swtich with LAG enabled

I am a little confused on Bonding on Centos side and Link aggregation on netgear switch side. Would mean a lot if someone can clear it out. Using switch Netgear XS708E which does not support IEEE 802....
user avatar
  • 11
-1 votes
1 answer
809 views

Why do players in EU get a higher ping when connecting to a Chinese server during their daytime as opposed to their nighttime? [closed]

Apologies if this is wrong place for this. I was directed to this board as it's a server issue. There's a server that I play on freqeuently that is in China; I live in Europe and understandably have ...
user avatar
  • 11
2 votes
1 answer
1k views

Does TRUNCATE take a long time on huge tables 10gig+

I wonder if it is a good idea to use phpMyAdmin's empty feature on a table with ~12gb on a production server. I don't want to cause too much lag but need to free some disk space. This needs to be ...
user avatar
3 votes
1 answer
2k views

Standard vSwitch static LAG with iSCSI hardware initiators - impossible configuration?

In one site, we have vSphere hosts with 2 10G NICs. Both NICs are in one vSwitch failover policy IP Hash for static LAG (this is to balance/failover VM traffic) Both NICs (HPE 534FLR-SFP+/QLogic ...
user avatar
  • 1,428
0 votes
1 answer
301 views

Chromecast mDNS burst slowing down PCs

Starting a few weeks ago, at seemingly random intervals, 3 of 5 PCs will lag at the same time for a few seconds to the extent where mouse and keyboard input is delayed and VoIP calls are dropped. ...
user avatar
1 vote
1 answer
182 views

Cisco SG550X LACP standby member even if link is UP

I configured a LAG into a stack composed by 2 x SG550X-48 (Units 1/2) and 2 x SG550X-24 (Units 3/4). The LAG1 is configured with LACP on GE3/4 and GE4/4 ports. The problem is that the GE4/4 port is ...
user avatar
  • 1,773
0 votes
2 answers
8k views

Linking two Dell switch stacks with LAG / LACP

Right now we have two independent switch stacks jointed with a single ethernet cable. For throughput and redundancy I would like to join them with a LAG. One switch stack is made up of Dell 7048's, ...
user avatar
  • 563
0 votes
0 answers
84 views

pt-pmp fails to run on percona 5.5 ubuntu 12.04

Command: [mysql] root:/mnt# pt-pmp --pid 16898 Wed Dec 7 18:41:51 UTC 2016 warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7fffd4126000 18 libaio::??(libaio....
user avatar
  • 11
2 votes
1 answer
124 views

LAG on one managed switch

This may be a dumb question, but is there any benefit of using LAG on only one managed switch with 2 VLAN's? By default my switch, Netgear GS724T, assigns 8 LAG's to the default VLAN. I am using VLAN1 ...
user avatar
  • 73
4 votes
1 answer
972 views

High availability links on VMware ESXi

I have a cluster of 3 VMware ESXi6.0 hosts which are not licensed for VMware Distributed Switch. Currently, these hosts are configured with a static LAG between 2 ports on the server and a port each ...
user avatar
0 votes
0 answers
80 views

Lags on a specific Windows 10 installation over MS VPN

I have a Windows 10 machine that is connected over MS VPN to a company intranet. All traffic to this company intranet and to the internet go over the VPN. When using remote desktop over the VPN the ...
user avatar
2 votes
0 answers
856 views

Lacp over two linux boxes - something like MC-LAG

I have two linux box'es which are gateways for some kind of virtualized network (Openvswitch, GRE). I am trying to optimize performance - so I decided, that I have to try remove routing part from them ...
user avatar
3 votes
2 answers
1k views

Apache 2.4 long delay before first response

I've test server (Centos 7) in my local network with Apache 2.4. All works fine, but each time after about 1 hour of inactivity Apache responding with a lag about 4.8 sec. Next requests proccesed very ...
user avatar
3 votes
0 answers
66 views

Dell switches, LAG config, ports stay lit when device powered off

I have two Dell switches configured in a stack (with stacking cables). I have four ports on each unit in the stack configured in two separate LAGs as follows: Unit 1/P1: LAG1 Unit 1/P2: LAG1 Unit 1/...
user avatar
2 votes
2 answers
58 views

Windows 2008 R2 Standard Edition random packet drop

My dedicated game server running Windows 2008 R2 Standard Edition drops packages randomly and this is causing a freeze for about 1 second for my players. I have no idea whats causing this. I've been ...
user avatar
1 vote
1 answer
54 views

Server frequently hangs, my client wants me to do X while the proper solution is Y

This question is more on etiquette rather than an actual server issue. 2 servers owned by a client of mine frequently stop responding (Fast, then really sluggish as in it takes 1 minute to execute ls,...
user avatar
  • 266
2 votes
0 answers
1k views

LAG Managed to Unmanaged switch

I currently have a brand new 24 port unmanaged switch. Also I just got some quad Intel NICs for a few of my servers. Therefore I am going to buy a 24 port managed switch, to setup link aggregation ...
user avatar
  • 469
0 votes
1 answer
744 views

2x uplinks in HSRP - how to setup switch?

Our ISP provides us with 2x 10G uplinks, and they use HSRP on their end. We see incoming traffic (load balanced) on both ports, but outgoing from us is only via one port. We only run L2 on our side (...
user avatar
  • 53
1 vote
1 answer
2k views

High ping times and packet loss on Alcatel-Lucent OmniSwitch 9600

We have 2 Alcatel 9600 core switches in a redundant configuration and 2 distribution switches (Alcatel 6850's) on another floor connected by fibre to the core switches. See the diagram below. Pinging ...
user avatar
  • 143
0 votes
1 answer
2k views

Nginx + php-fcgi website loads 4-5 seconds, slow issue

My website started loading for like 4-5 seconds (in peak hours) - it is almost not usable. Traffic: 40MB/s out, 6MB/s in. (almost 95% of out is downloading files 0.5-2GB large). Over 100 simultaneous ...
user avatar
0 votes
1 answer
747 views

After Mavericks upgrade problems with PHPStorm [closed]

I upgraded to Mac OS Mavericks and since then my PHPStorm caused problems. During typing inside the editor the CPU goes up to 400% and the typing lags. I didn't know what to do or what the reason is. ...
user avatar
  • 109
1 vote
1 answer
2k views

Slow http responses

I am running an apache web server on debian 6.0 with kernel 2.6.32-5-amd64. In certain times of the day, usually when more people are online, the server have very slow responses. I am sure, that is ...
user avatar
1 vote
1 answer
195 views

Debian 7 - Disk lag when copying files [closed]

I'm hosting multiple game servers on a machine with Debian 7 and after a game server is created, a new game folder is extracted with the game files on it, which involves copying around 2-4 GB, and ...
user avatar
2 votes
2 answers
2k views

Stacking and LAGing 4x PowerConnect 8024F's

We are constructing a new networking infrastructure to replace out 1GbE backbone and have decided upon using 4x Dell PowerConnect 8024F's as our "core" switches. As per the diagram below we have 2x ...
user avatar
8 votes
1 answer
11k views

Layer 2 Loop Avoidance: Three Switches in Series

I know this seems like a homework question, but it's actually part of a larger project (and network) and need to break it down into chunks so I'm clear with what I'm doing. I've never worked with [R/...
user avatar
1 vote
1 answer
294 views

Netgear XSM7224S / DLink 1210-48 Static Lag (Trunk Failure)!

I need to configure a Netgear Switch(XSM7224S) and DLink Switch (DL1210-48) with two trunk ports. I did the same and created a lag (static) between them, afterwhcih a reboot was performed on both of ...
user avatar
0 votes
1 answer
3k views

MySQL replication lag increasing

I have simple master-slave replication setup. Everything worked with no problems for more than a year. Few days ago replication lag started to rise and it's still rising with no obvious reason. ...
user avatar
  • 187
5 votes
2 answers
4k views

Laggy server, seems iptables is doing the load

I added a few thousand IPs packed in multiple /24 classes to a CentOS box and because of that I am getting scanned day and night. Since this server will be a workhorse and it will only need to be ...
user avatar
  • 113
4 votes
1 answer
2k views

MongoDB Replica-Set with Replication Lag on one node only

we experience a strange behaviour in our MongoDB Replica-Set, setup of 3 Nodes (all Xeon Quad-Core-Class CPUs, 16GB of RAM for one, 24GB for the other two nodes) The one node with less RAM is normal ...
user avatar
0 votes
1 answer
134 views

Artificially degrade apache2 performance to meet real world conditions

I want to degrade my apache2 development server performance (it's on a local network) to simulate real world conditions (lag, slow connections, random timeouts...). Is there any apache mod to do ...
user avatar
  • 113
2 votes
3 answers
159 views

Copying Files Gives Disk Lag

I have some Game Server services running on my Debian 6.0 64-bit Custom Kernel machine. I lag on my currently running services whenever I install a new service. Installing a new service just ...
user avatar
10 votes
4 answers
33k views

Link bonding across multiple switches?

I've read up a little bit on bonding nics with ifenslave; what I'm having trouble understanding is whether there is special configuration needed in order to split the bonds across two switches. For ...
user avatar
  • 1,179
0 votes
1 answer
246 views

Dos/ Flood Lag even though Port not Saturated

My GameServers had been under some UDP Floods due to which they generated outputs to the attacker which gave the GameServers some huge lags. Thanks to friends at ServerFault that upon different kind ...
user avatar
2 votes
2 answers
268 views

Diagnosing Random Network Lag

I'm having trouble diagnosing some random lag on a 6 server LAMP cluster serving a MediaWiki site. While we're serving some 100 pages/sec the servers themselves are running fine with less than 0.5 ...
user avatar
  • 3,384
0 votes
2 answers
338 views

40 tcp clients simultaneously - extreme lag

I own a dedicated server at nuxit, which "guarantees" a 20mb connection. I run a game server there which i have programmed myself in java. The game does not consume a lot of memory/cpu/bandwith (...
user avatar
  • 175
1 vote
4 answers
5k views

Basic traceroute question - good traceroute, but connection times out?

Basic question: if I get a decent ping between hops in a traceroute reading, BUT I'm unable to connect to the host via FTP, what does that imply? By connecting via FTP, I simply mean using FileZilla ...
user avatar
  • 147
2 votes
1 answer
2k views

How to diagnose lag problem with 502 errors (linux, apache)?

For the past few weeks I've been getting more and more reports about lag on one of my sites. I've finally been experiencing it first hand over the last week, but I haven't been able to pinpoint the ...
user avatar
0 votes
1 answer
2k views

Link Aggregation between DELL PC2724 and Cisco Catalyst 3750

I'm trying to configure Link Aggregation between my two switches, on the DELL switch, there is only an option to include a port in a "LAG Group." On the Cisco's I've tried creating an EtherChannel ...
user avatar
  • 2,151
1 vote
1 answer
2k views

How can I Identify Cause of Slow Image Loading in IIS?

Please excuse if this question isn't as clear as it should be, but I'm a Dev (not a System Administrator) who is trying to help out with an issue we're seeing. We just migrated the hosting of our ...
user avatar
  • 111
1 vote
1 answer
1k views

Random Lag in Apache before serving files

I've been trying to troubleshoot some random lag that happens in less than 3% of requests I'm sending to my server. I wrote a testing script that uses PHP's file_get_contents on a seperate server and ...
user avatar
  • 235
1 vote
3 answers
3k views

web application lag when connecting to VPN database

I have a network traffic question, that I may get a lot of answers for. At work, I'm VPNing to a client's internal network where they have their stage SQL database. Every time I stage development (...
user avatar
  • 1,864
0 votes
2 answers
147 views

How to diagnose networking lags using Windows on colocation?

I have W2008 R2 server on colocation. I am getting weird cyclical lags - several times a minute latency jumps and then gradually drops back. I can tell becuase the service I consume sends me local ...
user avatar
3 votes
1 answer
14k views

Static LAG and VLAN Trunking Differences?

What is the difference between Static LAG and VLAN Trunking and which would be better to use going from Switch to Switch with CAT5 in a VLAN environment?
user avatar
  • 167
3 votes
4 answers
326 views

Downloading a file brings network to a crawl

I'm an IT assistant and am attempting a download of CentOS for a webserver. It's a 3.9 gig DVD ISO and whenever I start the download, or any download for that matter, it will max out at 300kbps, seems ...
user avatar
  • 63
0 votes
1 answer
2k views

Nginx Static Content Server Maxing Out?

I use nginx to serve the static content for a decently busy website of mine. I have the logging disabled, and 4 worker processes enabled with 5,000 connections per worker (which should yield a max ...
user avatar
  • 221
5 votes
4 answers
5k views

mysql connection is slow (5seconds)

After building my webapp on a first boot i create 2 connections to mysql on debian then 1-2 (r/w) for every page after that. The connection consistently take 5.2 seconds to connect. Debian is in a VM ...
user avatar