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0
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0answers
9 views

ASUS RT-N66U how to identify source of traffic spike [migrated]

I have an ASUS RT-N66U as my home router. We are experiencing some traffic spikes in downloading over WiFi that slow all other activity to a crawl. Is there a way to identify the source (ip/host) of ...
2
votes
0answers
88 views

Diagnosing slow active directory logins

I'm having a hard time diagnosing intermittent slow logins on domain PCs. A bit of information about the network that has this problem: My domain spans 5 sites, all with VPN connections. DCs are ...
2
votes
2answers
7k views

Diagnosing permission problems with Cobian Backup to network share

I'm running the latest Cobian 11. I have a Synology DS412 NAS. All of my machines (Mac and Windows) access this just fine when I'm logged in and I browse to it manually. I have Cobian installed as a ...
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votes
1answer
348 views

Web server keeps going down, how can I find out whats causing it?

I am pretty new to running a VPS. I am using http://www.pingdom.com/ to monitor my server and notify me when its down. What is the process I should go through to determine why is causing the server ...
2
votes
2answers
156 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 ...
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1answer
4k views

How to troubleshoot a hanging Linux machine [closed]

There is this popular job interview question: Given a machine hangup (let's say RHEL) how do you trouble shoot the problem? My answer would be: 1) I'd use (what is the name of that server BIOS ...
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3answers
336 views

Server Crash Diagnosis…Are there any 'black box recorder' style programs available

My redhat server is crashing every three weeks or so at 4:15am ish on Sunday mornings. (well it was sundays the last two have been Thursday mornings at 4:15ish) Looking at the logs (mysql, httpd, ...
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votes
4answers
139 views

What diagnostic information can I give my system administrator to help him diagnose the cause of slow performance on Windows XP?

I'm not a sysadmin, but a developer. Lately, my colleagues and I have all seen a big slowdown in the performance of our Windows XP machines, especially the laptops. In fact, performance is so bad on ...
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13answers
855 views

Hard drive fail - How to regain confidence on the drive or make some use of it

After a hard drive fail (lots of corrupted sectors) I reformat it, but the drive give me no confidence to use it in production. Is there a tool to stress test so I know I can use it? In which ways ...
3
votes
3answers
2k views

What's the best way to track Jitter and Packetloss

I need to track Jitter and Packet Loss over a MPLS line. What's the most accurate way to capture this information without interfering with the data being sent back and forth? Is SmokePing the best ...
6
votes
8answers
948 views

Free Tools for Hard Drive Diagnostics [closed]

Are there any free tools available to perform hard drive diagnostic? I have an old 3.5 IDE Samsung HDD which I use as an external drive through USB connection. I recently started to have problems with ...
2
votes
5answers
1k views

How to troubleshoot hanging linux server

I have several Ubuntu Server 8.04 machines at a remote location. Every couple of months or so, one of them would stop responding and need to be power cycled. From looking at my log files it seems that ...
7
votes
3answers
534 views

How to troubleshoot Windows? Post your checklist [closed]

There is sometimes a situation when Windows suddenly goes crazy: is slow, unresponsive, some things don't work, it crashes. I wonder how do you approach diagnosing those issues. I'm merely a ...