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Questions tagged [diagnostic]

The tag has no usage guidance.

20
votes
3answers
71k views

How to test a connection without telnet? [closed]

I'm trying to test whether machine A can connect to machine B on certain ports. The sysadmins of machine A have seen fit to remove the telnet command. What would be a convenient replacement? Machine A ...
10
votes
3answers
31k views

How to diagnose frequent segfaults

My server is logging frequent segmentation faults to /var/log/kern.log in different tools. So far I've seen them in Perl, PHP and rsync. All installed software is up-to-date Debian packages. Here's an ...
9
votes
10answers
24k views

Linux - Is there any way to identify the speed of your memory through software?

Is there any way to identify the speed of your memory through software? I am on Fedora 9 and looking to find out the speed of the DIMM's I have in there currently. I have tried a 'lshw' but it doesnt ...
9
votes
2answers
16k 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 a ...
8
votes
2answers
4k views

Why is Postgres sitting 95% idle, with no file I/O?

I have a TileMill/PostGIS stack running on an 8 core Ubuntu 12.04 VM on an OpenStack cloud. It's a rebuild of a very similar system which was running nicely on very similar hardware (same cloud, but ...
7
votes
2answers
7k views

How to interpret traceroute / output of MTR?

I have been running MTR to/from one of my servers and noticed something that looks odd to me. Because I am not really into this I will give you three outputs: This is from the server to my home ...
7
votes
3answers
899 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 ...
7
votes
1answer
4k views

Identifying what caused a server reboot

I have an HP ProLiant DL380p Gen8 that is running VMWare ESXi 5.5. It has been rebooting itself at seemingly random intervals for the past 24 hours. There is only a single VM running, and even if I ...
6
votes
8answers
1k 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 ...
6
votes
4answers
9k views

Methods for analyzing Red Hat sosreport output?

For some time (since EL 4.6), Red Hat has embedded a system report and troubleshooting tool into the operating system. The tool, sosreport, collects system information and settings and bundles it into ...
6
votes
1answer
19k views

determining free memory from command line on Windows

I would like to monitor the free memory on four machines each running Windows Server 2003 R2 SP2 64-bit. Each box has 31.7gb of RAM. I would like to periodically run a command line tool so I can ...
5
votes
8answers
34k 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 ...
4
votes
2answers
5k views

Diagnosing possible intermittent network failures/slowdowns; tool?

Is there a simple (linux cli) tool that I can run continuously for a period of time to see if the there are any connection problems between two specific network endpoints over the wan? One remote ...
4
votes
1answer
6k views

Is there a complete reference for HP's diagnostic port 84 and/or port 85 codes?

The HP ProLiant DL580 systems (G5 is the one I'm interested in at the moment) have a two-digit 7-segment display on the system board (visible only inside the chassis) which displays various diagnostic ...
3
votes
3answers
7k views

How do I detect what is changing file ownership on Linux?

I have inherited a bunch of Linux (Ubuntu Precise) servers and am currently having problems with the ownership of a folder changing to "root" fairly often. We run puppet, which changes the ownership ...
3
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 ...
3
votes
1answer
17k 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 ...
3
votes
4answers
149 views

Are there any good tools for reporting on a computer's specs?

I have a client who has a computer they want to upgrade. They are unable to tell me the specs of this computer and they're not the type of person I could walk it through with. Ideally, I'd like to ...
3
votes
3answers
815 views

Snapshot of system at high load times?

I'm seeing high load average at regular times on one of my sites. I have alerts setup, but it's not obvious what's causing the high load, so I'd like to capture the state of the system when the alert ...
3
votes
3answers
3k 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 ...
2
votes
2answers
5k views

Is it possible to track who is running SQL Server Profiler?

Is it possible to see who is running SQL Server Profiler against a certain database and possibly from what machine? Say through Profiler itself or by T-SQL statement. I wonder if it is even possible ...
2
votes
3answers
186 views

Are there any good (hopefully free) hardware diagnostic utilities available?

A diag utility that runs from CD or USB would be my preference. I'm having some trouble with a desktop PC that I support, and I haven't been able to figure out what is going on with it. I used ...
2
votes
3answers
2k views

Server memory configuration after upgrade

I have an IBM 346 server that can support up to 16GB of memory. It previously had 8GB installed (8x 1GB slots) and was working fine. I have upgraded it to 16GB using 8x 2GB slots. However now when the ...
2
votes
3answers
785 views

memtest86+ crashing on server

We have a few DELL 1950 servers. One of those servers has CentOS6.3 and it's randomly rebooting, so I suspected it was hardware (no log generated). The other four servers do not randomly reboot. We ...
2
votes
3answers
5k views

(How) can I use syslog to diagnose mysterious crashes?

I run a LAMP stack on Ubuntu server. Twice today it has ground to a halt and required a hard reboot. Prior to this it had been stable for many months. It has been about a fortnight since the last ...
2
votes
2answers
8k views

Process in the run queue

How do show the current list of processes and threads currently in the run queue? That is to say, if my server's load average is 32.1, then there were on the average about 32 processes or threads ...
2
votes
2answers
5k views

How to diagnose failed drive on server with raid storage controller?

I have problem with one of my Dell PowerEdge R210. Machine is with Centos 6, today system logs started to inform that the hard drive is failing. Jan 6 03:20:12 centos6 kernel: LSI Debug log info ...
2
votes
2answers
256 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 ...
2
votes
1answer
62 views

Get MSI log for Active Setup

One of my users has Outlook unable to start with "Cannot start Microsoft Office Outlook. Cannot open the Outlook Window" and I've already ruled out existing add-ins. (This is just for background ...
2
votes
0answers
79 views

How can one get a UDE report from Microsoft Fixit Center Pro?

As per this video anybody is supposed to be able to upload their server's logs to the Microsoft Fixit center Pro and get an Automated diagnostic report called UDE. http://channel9.msdn.com/Shows/...
2
votes
0answers
450 views

How to start a data collector upon high CPU load condition?

I have a Windows 2008R2 server that experience high CPU load for several minutes about once every couple of weeks. Unfortunately, when these events occurs, logging into the system through RDP or at ...
1
vote
5answers
645 views

What does “-k start” mean in the output of ps command

I try to run an apache instance. It doesn't run properly. I am trying to get some diagnostic information. I gave ps command and the apache instance that don't run properly are output with -k start. ...
1
vote
3answers
55 views

How to list Windows process timers?

I have a Windows system that exposes some weird activity at regular timer interval and suspect this originates in a running process. Is there a tool to list all process timers? No matter it is CLI or ...
1
vote
1answer
538 views

Should I run rsop as administrator or as domain user?

I have to diagnostic some AD policy on a windows7 client. So I want run rsop but I dont know if I have to run it as administrator (local) or as domain limited user.
1
vote
2answers
880 views

Are my disks within this MSA storage failing?

When I go into my HP Array Configuration Utility, there is no errors and and warnings. No visible amber lights either. Should I swap out the disks? This Windows server lost the storage about 4 times ...
1
vote
4answers
1k views

What is the easiest way to run a boot level surface scan?

I have a PowerEdge 1850 running two SCSI Ultra 320 drives (10k 73gb). I am looking for recommendations on boot disks / methods to run a boot time surface scan. I would like to do this at boot time ...
1
vote
1answer
121 views

How to set up an end-to-end SNMP data collection system to cloud?

Aim: We are creating a cloud server which will collect diagnostic data (like bytes exchanged, SNR) from remote SNMP enabled network devices (like Routers, Switches). The SNMP devices may be located ...
1
vote
1answer
27 views

Serial over USB during boot

I am currently trying to debug the boot sequence of Xen, and past a certain point, the only way to do it is over a serial connection. Now, on the laptop I'm using there exists no serial port nor an ...
1
vote
1answer
296 views

How to test SCSI drives faulty or not?

I have 10 scsi drives which are used. How do I test them to ensure they are working correctly? Some have red stickers presumably indicating they are faulty. The server I have access to is an IBM with ...
1
vote
1answer
79 views

Tools to help identify unknown server issue

We've been struggling to identify a issue where all our bespoke systems crash at least once a day. We haven't changed all our systems to we're trying to pin down what else has changed which is ...
1
vote
3answers
272 views

FRSdiag.exe install by an end user?

Why would an end user (non-admin, but knowledgable) attempt (but fail) to install FRSdiag.exe on their workstation? Is there a security issue here?
1
vote
1answer
282 views

No Event Logs in Diagnostic on Windows Azure?

I'm trying to get .NET Remoting to work on Windows Azure, with a web role. I get a 500 internal server error when trying to access the URL. I've tried using Azure MMC (http://code.msdn.microsoft.com/...
0
votes
2answers
2k views

How can i find out what crashed my Windows Server 2008 R2 box?

My file server just went belly up and I can't seem to figure out why. Perhaps I'm naive but when these things happen I can typically look through my System, Application or Security Event Viewer log ...
0
votes
2answers
198 views

Hardware Diagnosis: Different Ram, Same Memtest Failure

Trying to diagnose random hardware freezes and did the natural thing; started memtesting everything. DDR400 DDR2 Ram CAS 5-5-5-18 Four sets of sticks; 2x2GB PNY's and 2x1GB Elixirs So far I've ...
0
votes
2answers
380 views

Better approach for diagnose web server failure

Yesterday my web sites were down for a short time. I logged on my server and my first reaction was restart the apache web server. After that everything was working fine. So I start to check the ...
0
votes
1answer
255 views

Server diagnostic tools?

I have an Openfiler server that is misbehaving. Im looking for a bootable CD or similar that will tell me whether there are memory, RAID controller or similar issues.
0
votes
3answers
7k views

Are there DFS Diagnostic Utilities server and client

Are there any tools for DFS troubleshooting? Some searches suggest network monitoring, but if you dont know how to read the scans with DFS in mind it seems a bit pointless.
0
votes
3answers
76 views

Looking for a diagnostic DVD or CD creation tool [closed]

I am looking for a diagnostic DVD utility (which tests hardware, create partition, fix partition, etc..) which can boot directly when the computer start. I am looking a solution which support ...
0
votes
1answer
2k views

hp dl580 g5 diag error

server disk access is slow, and running insight diagnostics reports this error: Error: 640003 DST Error Error: 640006: The Read and/or Write HARD error rate is above threshold This drive has ...
0
votes
4answers
146 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 ...