0
votes
1answer
57 views

mpstat not displaying intr/s column

I'm on CentOS 6.5, sysstat 9.0.4.22.el6 For some reason mpstat is not displaying the intr/s column I'm running it this way, for example, and only these columns get displayed: mpstat -P ALL 1 5 ...
2
votes
1answer
54 views

Linux filesystem page cache - hot or not

How can you tell how much of the filesystem cache is hot (frequently accessed) or not? The use case would be determining when you are approaching the limits of your memory but before you actually hit ...
0
votes
0answers
19 views

Properly configuring lm_sensors

I am using Observium as my monitoring device. I have installed lm_sensors and this is my sensors.conf file: cat /etc/sensors.conf label temp1 "temp-System" label temp2 "temp-CPU" label temp3 ...
1
vote
2answers
314 views

get current hard disk read write in ubuntu and make log file

I'm writing a customized monitoring panel for Ubuntu server. At this step i need to get real time hard disk read and write rate then put it into a file as a log file. I used tools like Hdparm,Iotop ...
2
votes
1answer
114 views

nmon NFS Performance Counters/Metrics

I have recently used nmon to record NFS client performance data from a suse 10 SP4 host and now need help understanding what the captured read & write figures truly indicate. With other ...
0
votes
0answers
42 views

top output seems fine, yet server is overloaded

This server I am benchmarking gives no obvious signs of getting overloaded at a first glance. top output: top - 22:48:25 up 5 days, 3:41, 3 users, load average: 3.19, 3.34, 3.25 Tasks: 146 total, ...
3
votes
1answer
630 views

How to monitor NFS load from userland?

Apologies if I'm not using the proper jargon (although I'm a longtime linux user, I'm not an admin) or if this is a FAQ (though searching SE got lots of hits, I didn't see anything quite like this ...
0
votes
0answers
28 views

Get Value of SMEM using PHP

I'm using smem command to know how much RAM each user is using. It also display the Count column. As far as my knowledge is concerned, Count column is a value PHP-FPM pm.start_servers and PHP-FPM ...
0
votes
1answer
56 views

Linux user permissions setup for monitoring tool

We have external monitoring tool which will access our linux machines through SSH and will read top/ping/netstat/disk activity. As i am creating separated ssh key and separated user for this purpose i ...
2
votes
3answers
187 views

How do I determine the number of seeks performed on Linux?

I have two programs that write to my servers disk. One I wrote, it does linear writes, it's writing data quickly. Another I'm benchmarking, it's writing data at a 3rd of the speed. It doesn't do much ...
0
votes
1answer
366 views

Debugging I/O issues on a linux server

What are some ways to debug I/O issues on a linux server? I've been using: # nohup top -b -d 10 > /var/log/top.log & # nohup iotop -b -d 5 -o -t > /var/log/iotop.log & PS: hardware ...
0
votes
1answer
647 views

Huge CS value in #vmstat - what does it mean?

Here is the output for #vmstat for my VPS (Parallels virtualization): procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------ r b swpd free buff cache si so ...
1
vote
1answer
167 views

What does this blktrace output mean?

I run blktrace and get lines like the following: 8,0 0 4 0.000016614 783 P N [kjournald] What does the N stand for? The field it's in is supposed to indicate read or write ...
1
vote
1answer
130 views

why dstat failed with --tcp option?

why --tcp option failed? should i install some package? if yes, which package i should install? this question is not the same as ...
-2
votes
1answer
344 views

Ubuntu program RAM and CPU OID

Running on Ubuntu. I need to monitor my program CPU and RAM , my prefer way is to monitor by SNMP. Does someone know the OID for program CPU and RAM(not total)? If there isnt so what is the simple ...
0
votes
2answers
1k views

Windows equivalent performance counters in Linux with Sysstat (or similar)

I administer a range of both Windows and Linux servers. On the Windows servers, I have the following performance counters logging every 15 seconds to a CSV file: Bottleneck analysis: Processor ...
0
votes
0answers
318 views

How can I setup a Proxy I can sniff traffic from using an ESX vSwitch in promiscuous mode?

I have a pretty specific requirement, detailed below. Here's what I'm not looking for help for, to keep things tidy and on topic: How to configure a standard proxy Any ESX setup required to ...
1
vote
4answers
158 views

Performance Monitor in Linux [duplicate]

Possible Duplicate: What tool do you use to monitor your servers? In Windows I use the Performance Monitor to see how much CPU, memory etc my server is using. Is there something similar to ...
4
votes
4answers
3k views

Graphing per-user CPU usage on a Linux machine

I want to graph (graphical output would be great, i.e. a .png file) the following situation: I have users A, B, and C. I limit their resources so that when all users run a CPU intensive task at the ...
7
votes
11answers
1k views

Is there tool that will monitor or log speed of web server responses

I have GNU/linux Box (linode VPS running Debian) with PHP, Apache, MySQL and Varnish (and app/site that use those) is there a tool that will save or monitor load times of web server responses?
1
vote
1answer
73 views

Server Monitoring: Collect data on Windows machine [closed]

Here's the situation: three servers need to be monitored, all data should be accessible on Windows machine. Standard sensors need to be monitored: - cpu usage - mem usage - disk usage I'm out of ...
3
votes
1answer
1k views

htop Memory meter is full. I haven't even started any service yet

I don't understand why my htop meter is full already. I'm not even running some task. Here's the screenshot of my htop: http://i.imgur.com/F56uB.png The green meter shows used memory, the blue meter ...
2
votes
3answers
407 views

Lightweight (plug and play) machine resource monitoring utility? [duplicate]

I need to monitor my Ubuntu Linux server performance, prior to diving into nagios / zabbix type of "enterprise server monitoring" solutions I would prefer something more lightweight. My requirements ...
0
votes
1answer
82 views

What options exist to compare the performance of a Solaris 5.9 and a Linux (Redhat RHEL 5.X) Server?

What options exist to compare the performance of a Solaris 5.9 and a Linux (Redhat RHEL 5.X) Server? I have aging Solaris server and a replacement Linux server hosted on VMWare. A key success factor ...
2
votes
5answers
2k views

Performance monitoring on Linux/Unix

I run a few Windows servers and (Debian and Ubuntu) Linux and AIX servers. I would like to continously monitor performance on these systems in order to easily identify bottlenecks as well as to have ...
1
vote
1answer
637 views

Is it possible to get hdparm to report the current level of performance degradation on my SSD?

I work on a product that is a headless Debian Linux system with removable Intel X-25M solid state drives. Recently we noticed that the read/write performance of these drives degrades over time, and ...
2
votes
3answers
203 views

Linux: System analysis tool [closed]

I have a server performing multiple tasks over traffic coming to it. Lately the server has been stuttering. When the system chokes, it reboots - this leaves me with little meaningful information as ...
6
votes
3answers
3k views

What is the closest equivalent of “load average” in Windows available via WMI?

Linux has a notion of Load Average which is defined as: System load averages is the average number of processes that are either in a runnable or uninterruptable state. A process in a runnable ...
2
votes
1answer
237 views

Monitor a long running process

I need to start a long running, memory/disk/cpu intensive process on Linux, and monitor it so I can : check it terminates with a good status code, collect stats (mem cpu disk every x minutes ) alert ...
24
votes
5answers
24k views

How passively monitor for tcp packet loss? (Linux)

How can I passively monitor the packet loss on TCP connections to/from my machine? Basically, I'd like a tool that sits in the background and watches TCP ack/nak/re-transmits to generate a report on ...
3
votes
3answers
1k views

Nagios plugin to take process snapshot when load is high

We have configured nagios with check_load NRPE plugin to monitor server load. It reports when load is high, but does not have option to take a snapshot top processes ( like top commmand) at that time. ...
3
votes
3answers
11k views

Measure Linux IOPS for a running system

How do I measure IOPS of a running Linux server? I know that the theoretical IOPS of a SATA drive is around 90 and enterprise 10k SAS/FC disk is 180. I want to know how much my running system is using ...
2
votes
4answers
1k views

Best way to say “sync all system clocks to this server, when and ONLY when I say so?” Mixed setup of Windows+Linux servers

Title pretty much explains it. Let's say there's 100 servers, various versions of Windows and Linux, and one Windows server is the "master clock." I did look at this question: How do I synchronize ...
0
votes
1answer
253 views

JBoss 4.2 Autodiscovery Failure (NoClassDefFoundError)

I am experimenting with Hyperic for the first time. I have a basic server & agent setup and working on a Redhat Linux box. But when the autodiscoverer is running for JBoss 4.2 I get the exceptions ...
26
votes
6answers
1k views

Top-like tool for IP traffic [closed]

I need to keep watch on how much bandwidth some connections are taking in a server, and I know I have seen a top-like tool for that before. However, I can't remember the name of the tool, and I'm not ...
1
vote
1answer
473 views

Linux network connections logging

I have linux (OpenSuse) testing server and I would like to have detail log about http and ftp connections (and maybie other TCP connections). Informations I'm interested in are IP address, transfer ...
4
votes
1answer
230 views

“Enterprise Monitoring Solution” with the lightest agent?

I have a network of disparate remote VPS / "cloud" / colocated servers that I would like to monitor from a central location, using open source software like ...
0
votes
2answers
263 views

How Can Linux Top Show 2% Idle, but Load Say 1.20?

On CentOS5, I'm seeing the 'top' command showing a hover between 20% and 2% idle, but then the load says 1.20. How can that be possible? When I type 'uptime', as well, I see 3 load numbers that are ...
0
votes
1answer
762 views

Incinga vs Cacti vs Zabbix vs [duplicate]

Possible Duplicate: What tool do you use to monitor your servers? I'd like to get a good overview of the various monitoring tools. I'm looking for something modern, fresh and lightweight ...
2
votes
1answer
961 views

How to monitor current output/receive queue length in Linux

I want to check the capacity and performance of my network. Besides checking the txkB/s and rxkB/s via Sar, I'd also like to see the average queue length of the network interface(so that the average ...
1
vote
1answer
329 views

Setting thresholds via smartd.conf

We currently use smartd to monitor SMART health on our disks. I would like to set the 'thresholds' that smartd uses to report. For example: 197 Current_Pending_Sector 0x0012 100 100 000 ...
1
vote
1answer
123 views

mpstat on slackware 13.0 shows no utilization

As the title says, the mpstat command, executed on Slack 13.0 continuously shows almost no processor utilization of any sort. In fact none of the output ever seems to change at all. The system is dual ...
2
votes
4answers
2k views

How to periodically collect hardware performance counters in linux?

I'm trying to monitor various hardware performance counters of a running system, however it seems that current PMC tool e.g. oprofile or perf tool can only record counters after the program finished, ...
0
votes
2answers
380 views

Thresholds for Linux performance metrics

What are recommended threshold for Linux performance metrics? I'm collecting statistics from remote servers using rstatd. On which values should I issue warnings? errors?
5
votes
2answers
3k views

Monitor and graph CPU usage per process and per thread

I need to monitor CPU usage by a given process and each of its threads. For each of them I want to have: average and maximum CPU usage percent, total CPU time used during the captured period, a ...
84
votes
2answers
36k views

What exactly do the colors in htop status bars mean?

By default, htop shows colored status bars for processors, memory, and swap. From left to right, the bars are colored green, blue, yellow, and red depending on some thresholds. What does it mean when ...
0
votes
5answers
3k views

How can I monitor network performance in Linux? [closed]

I am managing a network with a Linux server (CentOS 5.4) and Windows XP Clients. Recently I have become concerned about network performance and would like to begin monitoring it. Is it possible to ...
3
votes
2answers
724 views

Measuring system calls per second in Linux

Is there a way to measure the total number of system calls per second on a Linux system? strace gives counts, but only for a single process. It looks like some versions of sar support this, but the ...
4
votes
2answers
944 views

Monitor load & resource usage of single process on linux (Red Hat)

Does anyone know of a way to monitor the load & resource usage of a single program. What I have is a process I'd like to know how much load it puts on the server but it's not something I can just ...
6
votes
9answers
4k views

Linux: How to find out whether the harddrive is causing a bottleneck?

I'm not asking how to find out where a bottleneck is. I just what to know how to check if the harddrive is being used at its limit (and hence causing a bottleneck). Something like top where I can see ...