All Questions
Tagged with performance monitoring
67
questions
1
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0
answers
778
views
Monitoring SLA/SLO/SLI using Prometheus
I have done much research about monitoring SLI metrics with Prometheus. I have found only how to monitor a cluster using Kubernetes. I'm hoping to find a response here for simple monitoring.
I also ...
- 111
0
votes
1
answer
34
views
is there something like the stem-and-leaf plot for timeseries?
When wanting to quickly take a look at the distribution of a sequence of values, the stem-and-leaf plot is an incredibly simple, yet powerful tool. It takes a few minutes to teach the computer to draw ...
- 91
1
vote
1
answer
59
views
How to monitor data transfer speed and volume between two computers on same network
My application on Win2012 Server stores its cache on a ZFS appliance in the local network, during peak load we are seeing some performance degradation, this only happens in the production environment ...
- 111
1
vote
0
answers
63
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capturing durations (intervals) between tracepoints in perf
When using the perf tool (Linux), is there any simple and convenient way to time durations between two tracepoints?
The obvious use is for syscall sys_enter and sys_exit points like sys_enter_fsync ...
- 11.1k
-1
votes
1
answer
706
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Are thousands of expired keys bad on performance for Redis?
I'm new to Redis, so I don't know which metrics I should care about and how to monitor its healthiness and responsiveness.
My colleagues and I are maintaining a software, which uses Redis heavily for ...
1
vote
2
answers
384
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How to interpret traceroute results
I am trying to figure out how to interpret the attached image.
First two hops are on our LAN, hops 3-5 belong to our WAN provider, while hop 6 is at our hosting provider and the hop 7 is a Windows ...
3
votes
2
answers
1k
views
Linux: Extreme load on idle CPU
I'm investigating a strange situation with extreme load (but low CPU, IOWAIT, SYS, disk/network activity) on one of our linux servers on which many oracle database instances are running.
When having ...
- 203
3
votes
1
answer
2k
views
/proc/diskstats: No such file or directory
Trying to get some disk performance metrics (in particular, using munin), found that /proc/diskstats does not exist.
Tried yum provides '*/diskstats' but nothing except munin was found.
CentOS ...
- 2,237
1
vote
1
answer
38
views
Does orca rrdtool apply any averaging/fudging of graph values?
I have a plot of data that consists solely of zero and one values. However, the orca plot that results shows intermediate values.
I wonder why this is.
- 468
0
votes
1
answer
126
views
Test cloud VM performance
I have a linux VM hosted in a cloud environment. I suspect the provider to do too much overprovisioning with CPU and IO, from time to time.
For example postgresql's reports 300ms+ queries that are ...
- 288
3
votes
1
answer
5k
views
iostat - dm-0 device shows much higher latencies than sdX
We are running linux (Centos 5.x) VM's on top of vmware vsphere 5.5. I am monitoring disk latency using iostat, specifically the await column, but I am noticing strange results with the device mapper/...
- 134
1
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0
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1k
views
Random server load spikes, number of tasks doubles, CPU/Memory consistent
We run a vBulletin forum with 6,000 visitors per day on an SSD VPS with 5GB RAM and 24 CPU Cores. On a typical day we see 30-50 concurrent users at any given moment. On busy mornings, it'll go up to ...
- 151
0
votes
1
answer
459
views
Why perfmon for remote desktop servers get an empty file (only time stamp)?
I'm trying to remotely monitor a server using perfmon, the output file is always empty and only the time stamp field is there?
- 11
2
votes
1
answer
570
views
SMI generation / detection in GRUB / real mode vs. in Linux
I'm trying to get an idea of the frequency and duration of SMI events on a Supermicro X10SAE C226 board (2.0a BIOS) with E3-1245v3 Haswell CPU.
The Intel BIOS Implementation Test Suite (BITS) SMI ...
- 161
0
votes
3
answers
9k
views
What's a good way to run a point-to-point network speed test over a WAN? [duplicate]
I want to monitor my WAN speed between two offices, and be able to schedule it to run at certain times of the day.
I guess in its simplest form this is just a point to point copy, but I want to ...
- 1,137
0
votes
3
answers
752
views
Passively monitor IO wait spike on process level
We use munin and monit to keep track of general stats about our vps, in last a couple of weeks, we have been running into issues where random IO wait spike is killing our server performance.
Since ...
- 331
2
votes
2
answers
1k
views
Disk Monitoring with cronjobs -- report disk issues
Is there a way to monitor disk health and send cronjob reports for errors?
I know you can use smartctl -s on -a /dev/hda to pull information but just wondering if there is a way that could be used to ...
- 6,681
1
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0
answers
173
views
% segments retransmitted above threshold
I've been doing some monitoring on our servers and we get warnings that the TCPv4 / % Segments Retransmitted is above acceptable threshold:
https://i.stack.imgur.com/MqXis.jpg
Is there any way to ...
- 111
2
votes
0
answers
245
views
Getting the virtual memory address for (major) page faults
On a Linux (Cent OS 5) system, I have a process that accesses a large amount of memory mapped files. The process is generating a large amount of page faults because the aggregated size of the mapped ...
- 159
0
votes
4
answers
331
views
Testing performance from around the world - how do I get a linux shell easily in multiple countries?
We are building a socket based service where latency is paramount, and as such we have servers distributed into 7 data centres around the world. However, whilst we know we're bringing the servers ...
3
votes
4
answers
1k
views
Monitoring file access in Linux
Is there a way to gather statistics about blocks being accessed on a disk?
I have a scenario where a task is both memory and I/O intensive and I need to find a good balance as to how much of the ...
- 159
0
votes
1
answer
6k
views
Enable: Asp.net connection pool monitoring with performance monitor
I'm a C# developer, but I'm running in a system management issue here.
Intro:
I'm suspecting that an ASP.NET application is having some issues with the connection pool and that the pool is flooding ...
- 121
2
votes
1
answer
2k
views
PerfMon "Data Collector" Vs. "Save Settings"/html
Perfmon seems to have two ways to capture / log its findings. One is to use a "data collector," and the other is to open a context menu and "Save Settings As" which produces an html file.
Could ...
- 247
4
votes
1
answer
1k
views
How can I diagose 100% CPU consume of svnserve.exe?
Our Subversion server goes to 100% CPU consume after some hours of work. A restart solve the problem for some hours only. The commit and checkout will be very slow in this case.
How can I find the ...
- 175
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votes
1
answer
570
views
Zabbix and time series data from old-school devices
We should monitor and log ~1000 devices (1..4 sensor per device). SMS and email alert and the common functions are required if anything going wrong.
I think we instead of developing the whole ...
- 121
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votes
3
answers
2k
views
Is it possible to get some type of performance report on Windows Server 2008 R2
I have a server running Windows Server 2008 R2 and I would like to know how well it handles a certain load.
Is there any built in way of telling the server to monitor performance for a specific ...
- 167
3
votes
2
answers
772
views
Questions about storage performance
I would be glad guys, if you can answer me some of my questions about the performance of our storage. The setup
HP P2000 SAS with 2GB cache
8x 1TB SATA 7200 RPM storage
RAID6
3x hosts with SAS HBA ...
- 1,493
1
vote
1
answer
2k
views
Best Metrics for Monitoring Apache Solr instance
We are running apache solr through sunspot.
What are the best metrics to use to look at the performance of solr in regards to needs to cluster/scale?
I am looking at monitoring these with nagios or ...
- 3,040
0
votes
3
answers
12k
views
Resource monitor and how to spot if you have disk I/O problems?
I have an application server which runs pervasive SQL and app using it.
Last weeks the users are complaining about poor performace of the app and I suspect disk I/O problems because CPU and RAM ...
- 397
1
vote
4
answers
2k
views
Recommended MySQL monitoring tool [closed]
I am looking for a good all-in-one monitoring tool for a single MySQL server and underlying Linux OS. I need something that gives me a quick graphical view of what is going on right now and that ...
- 21
3
votes
1
answer
448
views
Monitor Network Performance of VPN Servers from different locations
Our company has 3 VPN Servers in US. We want to monitor network performance ( the most important factor is how fast users from different locations in the world can download data when using our servers ...
- 135
0
votes
1
answer
287
views
Web Server Monitoring Tools or software? [duplicate]
Possible Duplicate:
What tool do you use to monitor your servers?
Recommended website performance monitoring services?
I am looking for tools or software to monitor a web server. Most ...
- 149
2
votes
1
answer
1k
views
Windows Performance Monitor keeps trying to add unwanted counters
I have been running a Data Collector Set for SQL Server for a week, and everything was going just fine until I tried clicking on Action -> Save Current View and now it always tries to add the ...
- 180
0
votes
2
answers
844
views
Linux: lightweight tool to restart process when they get killed
I have a micro instance of ec2. A couple of java process’ gets killed every now and then.
Which tool can I run to monitor process and restart then when they get killed?
- 4,413
2
votes
1
answer
9k
views
Resource Monitor Disk Usage scale
I'm sure this is going to be very dependent on the harddrives and other hardware that we have in our machine, but I have no idea how to read these graphs.
This graph looks nice and low.
This one ...
- 429
10
votes
4
answers
13k
views
Nagios remote monitoring: NRPE Vs. SSH
We use Nagios to monitor quite a few (~130) servers. We monitor CPU, Disk, RAM and a few other things on each server. I've always used SSH to run the remote commands, purely because it requires little ...
user80776
3
votes
5
answers
6k
views
Figuring out what's causing a server to slow down
I have a potential client that has a php site that performs fine most of the time. However, every week or so, it will experience lag (slow page loading). I am sure there are a myriad of things that ...
- 177
1
vote
1
answer
294
views
How to monitor and log processor, memory and other details for website running behind IIS?
I have ASP.NET application installed behind IIS 6.0(Windows Server 2K3). Now when i run the application and i would like to get some load testing scenarios to work on this. While doing the load test i ...
- 145
5
votes
2
answers
3k
views
Real-time IIS monitoring
We're looking for some monitoring software that will report and display real-time performance information for IIS. We're currently using perfmon to monitor requests executing, requests queued, etc...,...
- 151
0
votes
4
answers
18k
views
Zabbix not collecting data
It's the first time that i install a Zabbix server on my dedicated server (debian 5).
But zabbix cannot collect data from the server itself (no remote server, it's installed on the server i have to ...
- 498
2
votes
1
answer
208
views
mysql query monitor
I have mysql server.
I need a free monitor (something similar to the mysql enterprise monitor http://www.mysql.com/common/images/enterprise/EnterpriseDashboard.png).
I need the graphs to be in ...
- 289
44
votes
11
answers
97k
views
How to monitor and log the memory/cpu usage of processes over time? [closed]
I am looking for a way to diagnose issues, such as swap death, where a balooning memory process fills up swap and kills the whole machine (such as apache).
I'm already using cacti and I can set up ...
- 1,003
9
votes
3
answers
11k
views
Monitor system CPU / system calls in Linux
I have a couple processes that are eating up a lot of system CPU time (as determined by looking at vmstat). Is there an easy way to find out what kind of system calls are being made?
I know there ...
- 613
1
vote
2
answers
929
views
Network bound / network pipe monitoring on Linux?
I'm trying to analyze the performance of an application running on Linux. I use a combination of vmstat/iostat/top to see if the machine is disk I/O bound or CPU bound, but I'm not sure what utility ...
- 613
6
votes
3
answers
737
views
A strategy for network monitoring to improve network health?
The goal
is to find out which parts of network should be upgraded / reorganized to improve network health (reliability and performance).
What are the methods to monitor network traffic, detect ...
- 1,585
7
votes
9
answers
9k
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 ...
- 1,510
1
vote
2
answers
286
views
Microsoft Windows server monitoring tools
I'm more of a developer then an IT guy and I was wondering if there are any existing Microsof tools for monitoring servers and potentially SQL Server.
We have access to MSDN so anything created by ...
- 385
3
votes
2
answers
745
views
Sysadmin 101: How can I figure out why my server crashes and monitor performance?
I have a Drupal-powered site that seems to have neverending performance problems. It was butt-slow about 5 months ago. I brought in some guys who installed nginx for anonymous visitors, ajaxified a ...
- 849
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1
answer
793
views
IRP_MJ_WRITE latency up to 15 seconds
We have written an application that performs small (22kB) writes to multiple files at once (one thread performing asynchronous queued writes to multiple locations on behalf of other threads) on the ...
- 132
3
votes
1
answer
498
views
Monitoring load on a VPS
I am an administrator on a Virtual Private Server being rented from a host-provider. (I am running Ubuntu. They are running Virtuozzo.)
I get that, although I have some guaranteed resources (like RAM ...
- 274