Questions about monitoring server hardware and software performance, or network performance.

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3
votes
2answers
1k views

How can ASP.NET's “Request Wait Time” be 0 when “Requests Queued” is consistently in the hundreds?

I'm curious why Performance Monitor claims I always have a few hundred ASP.NET 3.5 requests "queued". The "Requests Queued" "ASP.NET v2.0.50727" performance counter is hovering in the few-hundred ...
0
votes
1answer
19 views

sar-like Utility For File Access

I'm troubleshooting a linux server's performance degradation from last night. I have sysstat installed on the server and it's polling every 2 minutes. At around the time the event happened, there ...
0
votes
0answers
11 views

data collector set from template “the security id may be not assigned”

I want to create data collector set from template on my windows server 2012 R2 (virtual machine). At last step (where you need to specify user to run this test) I'm getting this error: My ...
1
vote
0answers
6 views

Is there a way to check resource utilization on a cluster running SLURM?

Not sure if this question fits better here or at Unix.SE but I figured it feels more appropriate here. I am running some computation-heavy research on a national cluster which uses SLURM for ...
2
votes
1answer
4k views

Running perfmon continuously with periodic reports

I have a question very similar to this one, but I want to continuously run perfmon, during reboots and throughout the day. Further, I'd like to generate a perfmon report every 10 mins or so. The ...
3
votes
2answers
58 views

How to compare mainframe CPU performance?

I am working with an application that runs on tomcat in OMVS. It run terribly on one mainframe, and adequately another another. Is there a way I can compare the CPU of the two mainframes as a ...
0
votes
0answers
16 views

Task Manager shows high kernel time

Foreward: Hardware: dual-socket Intel Xeon, 128gb memory, hardware RAID-1 SSD OS: Windows 2012 R2 Standard w/ Remote Desktop Services The Task Manager for one of our terminal/application servers ...
0
votes
1answer
1k views

Apache loading time in microseconds - difference between header and log

I recently followed this guide to obtain performance measurement of siteload on a web server. To log the time it takes for Apache to process a request add this to your apache configuration file: ...
1
vote
1answer
3k views

Active Sessions Performance Counter for Web Server

I would like to monitor the number of active sessions for my ASP.Net 4.0. It is hosted on IIS7 Windows 2008 Server. When I looked at the Performance counter, I saw many instances. How could I know ...
-2
votes
2answers
10 views

memory usage per user in SGE cluster

I would like to automate the estimation of monthly memory usage of all jobs performed by a given user in my cluster (SGE, ubuntu). I have seen there are many tools to compute the current memory usage ...
0
votes
1answer
1k views

performance monitor in iis 7 to monitor which website is using most resources (asp.net)

I am using Windows Server 2008 R2 and IIS 7.5, and am hosting multiple websites on the same webserver. Is it possible to use Performance Monitor to know on average which website is using the most ...
0
votes
2answers
3k views

Exchange 2010 - resolving Calendar Attendant\Requests Failed

On my mailbox server, I am receiving the alert: MSExchange Calendar Attendant\Requests Failed Or in Solarwinds Requests Failed (Calendar Attendant) for Exchange 2010 Mailbox Role Counters (...
0
votes
1answer
1k views

IIS/ASP.NET performance incident - Perfmon Current Annonymous Users going through roof but Requests/sec low

Setup: ASP.NET 4.0 website on IIS 6.0 on Win 2003 64 bit, 8xCPUs, 16GB memory, separate SQL 2005 DB server. Had a serious slowdown today with any otherwise fairly well performing ASP.NET site. For a ...
0
votes
0answers
21 views

SCOM 2012 - understanding rules vs. monitors?

In SCOM 2012, I have a subscription that was setup by one of my admins who is no longer here. I'm a little confused by the subscription and while I've read multiple times the differences between ...
0
votes
0answers
16 views

How to check that VMWare virtual machine is receiving sufficient resources from the physical server?

We have VMWare virtual machine in data center but applications on it suddenly started to be slow after one weekend. We are considering possibility that data center has moved virtual machine to other ...
0
votes
2answers
37 views

Analyze memory and cpu peaks of docker container

I want to analyze the maximum memory (RAM + swap) usage and the maximum cpu utilization of a single docker container. I know that one can use docker stats and /sys/fs/cgroup/memory/docker//memory....
0
votes
1answer
26 views

JBOSS AS 7 monitoring Paramaters

We are using JBOSS AS 7 in standalone mode to run our web application. Our user base is around 1000 users and we have 4 instances of a JBOSS running on 4 RHEL6 machines behind a load balancer. ...
4
votes
0answers
2k views

Use perfmon to monitor a specific ASP.NET webapp across worker process restarts, IIS restarts, etc.?

I have a few perfmon performance counters that I'd like to track for a specific ASP.NET application over an extended period of time, say a week or a month. The trouble is that perfmon counters are ...
3
votes
1answer
3k views

Getting “No such interface supported” when connecting to a remote Performance Monitor

I have 6 machines: 2 x Windows 7 32-bit (W71, W72) 4 x Windows 2008 R2 64-bit (W2k81, W2k82, W2k83, W2k84) I want to access the W2k8 machines' performance monitors remotely from the W7 machines. ...
0
votes
0answers
23 views

CPU utiliation in summary and task areas differ

We have a Cisco UCS-B200-M3 server with 48 cores under high load. The curious thing is a mismatch in top output. Here are the initial lines from top: top - 14:14:06 up 35 days, 18:11, 0 users, load ...
1
vote
1answer
75 views

“Committed Bytes In Use” is high when there are plenty of “Available Bytes”

My windows computer keeps showing low on memory message so I used performance monitor to check memory status. The results are: Commit Limit: 25,758,334,976 (bytes) Committed Bytes: ...
-2
votes
1answer
42 views

Analyzing server performance [duplicate]

Analyzing server performance Hi we have recently finished work on one ecommerce site which is built on opencart 2.x and site has around 1k products. The site is currently running on VPS server. from ...
0
votes
0answers
92 views

IIS time-taken and \ASP.NET\Request Execution Time relation

I am aware that the IIS log entry time-taken field will also report network-time (under certain conditions). I use the PerfMon counter \ASP.NET\Request Execution Time that reports The number of ...
5
votes
2answers
821 views

What is the (*) in Windows Performance Counters

Take the following counter for example: \LogicalDisk(*)\% Free Space Where can I find what can be plugged in place of the *? I know sometimes it's _global_ and other times it can be _total_. I ...
0
votes
0answers
17 views

Is it possible to get performance metrics out of hitachi san array or out of tuning manager?

Has several hitachi san arrays ( AMS, HUS ) and virtualizers ( VSP, USPV ). Hitachi Command Suite had installed. Tuning Manager quite usefull, but i want to get statistics out of it ( automatic way, ...
0
votes
0answers
160 views

How to monitor request timeouts/drops between IIS and nginx

An NGINX reverse proxy is load balancing multiple Windows IIS/ASP.NET servers. Let's say the servers are under heavy load and might drop connections/requests. I see upstream timed out errors in nginx'...
0
votes
1answer
93 views

Windows command line tool for disk IO monitoring

I am looking at extracting disk IO statistics on Windows 2003 upon occurrence of some events, e.g. a long full GC occurring that is waiting a long time for CPU resource. I have read that Process ...
2
votes
2answers
3k views

How can I monitor disk IO load on a Windows 2008 server?

We are running multiple processes on our servers, which are mostly CPU intensive, but also use the local HDDs for reading the data. I can trivially look at the CPU load and memory usage in TaskManager ...
1
vote
1answer
22 views

Why can't I view or add SQL and Network Performance Counters in Performance Monitor?

I'm trying to add the below Performance Counters to a user-defined data collector set in a Performance Monitor on Windows Server 2012 R2. I can see them when I dump them to a file (eg typeperf -q -o "...
3
votes
1answer
2k views

monitoring disk i/o via wmi

I'm using WMI to monitor Windows Server 2003 and Windows Server 2008 hosts. I got all the info I wanted but the disk I/O performance. I've tried quering the "...
1
vote
1answer
40 views

Does it make sense to use perfmon in a vSphere infrastructure?

vCenter has its own performance counters, so does it make sense to use perfmon to baseline or monitor things like IOPS of Windows VMs, or should I just be using vCenter counters instead? Would ...
6
votes
1answer
2k views

Have issue with monitoring 32bit app pools running on 64bit IIS

I am performing a monitoring task on my 64bit web server which has couple of applications pools running in 32bit mode. I am using .Net CLR Memory object in perfmon to monitor them. However, my ...
0
votes
0answers
10 views

How to show delta of a counter metric in PCP between time A and B?

For simple metric like disk.all.read it is enough to do something like this: $ pmval -a ... -S 11:50 -s 2 -t10m -r disk.all.read metric: disk.all.read ... start: Tue Feb 23 11:50:00 2016 end: ...
8
votes
7answers
3k views

Nagios Check that Simulates Web Full Rendering Time

Does anyone know of a Nagios plugin or cli program that can simulate the load time of a webpage as it would be in a browser. For example the resulting total load time of something like Pingdom's Full ...
0
votes
0answers
14 views

drop in nmon top monitoring

We've had an incident in production and while looking at the nmon TOP graphs for some java program, I was surprised to notice drops in the data collection, see the picture: As you can guess (since ...
0
votes
0answers
15 views

Error Running pcp on Cent OS

I am installing pcp and pcp-webapi using the following command [vagrant@localhost ~]$ sudo yum -y install pcp-webapi It installs successfully, however when I try to start the service using sudo ...
34
votes
5answers
55k 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 ...
2
votes
1answer
1k views

High CPU load caused by slow disks?

We are running a online application on a 3-year old server (quadcore Xeon, 4GB RAM, SAN-disks). The server hosts besides the web application a SQL-, FTP-, SFTP, SMTP, and POP-services. Over the years ...
1
vote
1answer
182 views

Monitor java application memory inside Cloud Foundry

I have a Java application that I'm deploying inside a Cloud Foundry environment. I want to monitor the application's memory usage. Cloud Foundry provides the cf app command that produces output ...
2
votes
3answers
1k views

What SQL Server Query will set perfmon counter “Longest Transaction Running Time” > 0

I'm trying to decide whether this performance counter is worthwhile monitoring: \\SERVER\MSSQL:Transactions\Longest Transaction Running Time. So during testing I tried to create some long running ...
0
votes
2answers
369 views

Why is the average in perfmon different than the average calculated from the csv?

I'm looking at a Physical Disk\Avg. Disk sec/Transfer counter in perfmon. We've always had faith in the Average number that perfmon reports over the selected time span. I can't figure out why if I ...
0
votes
0answers
37 views

Establishing performance baseline with SCOM 2012 APM

We're lookign at establishing a performance baseline for our production environment. This could be as simple as establishing highest measured TPS for MS SQL environment and highest measured RPS for ...
1
vote
0answers
396 views

High CPU caused by system interrupts

We have a three day old Idacentre A740 AIO PC. (windows 8.1 pro) The system is up-to-date. After we start the PC and "do notthing" the system interrupts taken 40% CPU time approximately. Tried to ...
3
votes
1answer
143 views

Can I configure PCP (Performance Co-pilot) clients to report to a monitoring server from behind a firewall

I have several computers that are running applications. These computers are on the internet, in that they can connect out to the general internet over port 80. These computers have dynamic IP ...
0
votes
1answer
54 views

concurrent user tesing using jmeter

On a 8GB RAM machine with Intel i5 2500 processor, i am running tomcat and able to send upto 400 requests with 0% error rate using JMeter for fetching a data size of around 2MB (approx). When i ...
0
votes
1answer
56 views

Current Number of Requests per Second with Apache 2.4

I know how to test the maximum number of requests per second with tools like apache bench and httperf. But is there a way to see the average number of requests per second a live server is currently ...
1
vote
0answers
41 views

Physical memory runs out after sql changes

We have an 2008 r2 server working for 5 years, its physical memory was always around 70% but after our last site code and SQL stored procedures and functions updates it got to 94-96% and all the pages ...
1
vote
1answer
65 views

What's the difference between Memory\Pool Paged Bytes and Process(_Total)\Paged Pool Bytes

(Be gentle with me, I'm a developer, not a server guy) I'm looking at some issues with custom code I have, and I'm tracking pool usage on a Windows Server 2008 machine. I'm confused about some ...
0
votes
2answers
499 views

Zabbix NFS monitoring

How would you monitor response of mounted NFS directory with Zabbix? I'm thinking about something like $ time /bin/ls -U /path/to/nfs (I think the output from nfsstat(8) relates less with user ...
3
votes
1answer
250 views

Performance counter alert not working

I want to monitor for example CPU usage on a server and run a script which will figure out the most demanding processes and logs it into file. I planned to use Performance counter alert which can be ...