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Questions tagged [lag]

55 questions
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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 and the error is "Connection timed out". However,…
Ray
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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 sites to a data center (faster servers and more…
NoAlias
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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 uses timestamps all over the place to time how…
Andrew
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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 (fixes/enhancements), I like to do a round of quick…
JustBeingHelpful
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How to fix very long logon times on Windows Server 2016?

I recently have very long login times on a Windows Server 2016 Datacenter VM. The boot is super fast, but after I type in credentials, it takes about 60 min until I get to the desktop. The login screen keeps "Applying User Settings" in the…
efr
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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 translated the application from Perl to Julia. It is a…
Pedro Serra
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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. After ruling out a few potential root causes, I…
mythofechelon
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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, the other is Dell 8132's (now called N4000 I…
Hank
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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…
brenguy
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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 input/response lags significantly thus rendering it…
rominator007
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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 (Cisco Nexus 5000). Now, what is the best practice…
Emil
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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 connections. Machine works fine and responds…
Wiggler Jtag
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After Mavericks upgrade problems with PHPStorm

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. So I reinstalled Mavericks. On a clean…
tester
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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. Seconds_Behind_Master is now more than 4 days and 6…
Matthias
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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 something similar?
Peter
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