The profiling tag has no wiki summary.
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Best way to profile Unicorn workers?
I'm trying to get a better picture of what my Unicorn workers are doing. Are they blocked on calls to other services for a significant portion of their cycles? Are they free most of the time?
The ...
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4answers
1k views
What consumes memory in java process?
we are trying to investigate memory usage of java process under moderate load.
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
12663 test 20 0 8378m 6.0g 4492 S 43 8.4 ...
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2answers
138 views
MySQL Query Profiling for Indexes
Is there a way which I can have MySQL record its queries and their Explain so that I can figure out how to index the expensive stuff? I'm new to this stuff. Thank you.
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57 views
Cisco 7206vxr cpu reducing
I have a 7206VXR (NPE-G2) . At the rate of 140 kpps i gain 80% of cpu .
So i looking for ways how to reduce it?
So i want to turn off netflow(but don't want to this,monitoring is highly important for ...
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1answer
48 views
How to investigate requests per second that are coming in?
If I have a server that is running Nginx + Passenger (mod_rails) how would I figure out how many requests a second are coming in?
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2answers
211 views
What's difference between monitoring, tracing and profiling?
I have seen these three words showing up a lot, but don't understand the exact differences between them. For example, collecting CPU utilisation is often called profiling and can also fall into ...
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3answers
301 views
How to find virtualization performance bottlenecks?
We have recently started moving our C++ build server(s) from real machines into VMs. (MS Hyper-V)
We have some performance issues that I've currently no idea how to address. We have:
Test-Box - ...
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51 views
Request Stats printer for Rails
For every request , rails, by default, logs time spent in views/active_record(sql), active resource http requests, etc. For e.g.
Started GET "/blah" for 127.0.0.1 at Thu Jun 07 19:07:33 +0530 2012
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50 views
Profile long-running job on EC2
We have a job that takes a long time to run - 11 or more hours - so it runs on a Amazon EC2 instance.
The job is executing lots of processes, scripts and utilities and such.
(It is doing cufflinks ...
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1answer
522 views
How can I check if my DB needs more RAM?
How would you check if your postgresql DB instance needs more RAM memory to handle their current working data?
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1answer
138 views
Get system information from multiple computers via bootable USB device
I am looking for something similar to what is posted in this question: Linux + get the all information about the hardware from machine by tool or script
Basically - I want to be able to plug in a USB ...
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1answer
99 views
Server Processor Selection Criteria & Profiling
We are purchasing a server to run various Bioinformatics software packages. The main package on our test machine is multi threaded and is totally CPU bound, the IO & RAM are not limiting ...
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222 views
Source of 'Failed to CoCreate profiler' event log
I have a Win Small Business Server 2003 box that has started regularly logging event ID 1022, "Failed to CoCreate profiler". There's no obvious pattern to when this happens, other than several times ...
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1answer
129 views
How to run truss with piped command in Solaris
How to run a truss command with piped output?
eg.
# truss -leDo /tmp/truss.out tar cvf - dirs/ | gzip -1 > archive.tar.gz
I get only the "tar" output in truss, not from gzip!
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2answers
204 views
Server I/O climbs, bandwidth peaks, server locks, where to start?
I'm using Linode to host a Wordpress blog with an eCommerce plugin named 'Shopp'.
I moved the site just a few days ago from a previous shared hosting account (with less resources than the Linode ...
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4answers
4k views
Profiling Apache+Mysql+Php server - which is the bottleneck?
How do I profile an Linux + Apache + Mysql + Php server for speed?
I have a server with a heavily modified MediaWiki instance running on Ubuntu 8.04. It's a bit sluggish - I haven't done anything to ...
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5answers
130 views
What do these profiling results mean?
I'm trying to switch a site from an old CMS to WordPress. I ain't got root. I can't install extensions. Vanilla PHP 5 install. So I just put microtime on each end, topped it off with ...
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1answer
429 views
Unexplained CPU and Disk activity spikes in SQL Server 2005
Before I pose my question, please allow me to describe the situation. I have a database server, with a number of tables. Two of the biggest tables contain over 800k rows each. The majority of rows ...
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2answers
156 views
Looking for advice to find the bottleneck of Samba server
My LAN structure:
A PC acts as a Samba client, IP: 192.168.1.12
A NAS router which runs a Samba server, IP: 192.168.1.1. The NAS router uses a USB key as its storage device and the USB has a 15MB/s ...
2
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1answer
83 views
Profiling windows performance
I am used to using profilers for software development. I have had multiple windows pcs which all have slowed down over time, as well as had work PCs become slower. I understand this is probably the ...
2
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1answer
493 views
Performance testing servers: How to characterize performance?
I need to purchase servers, and need to understand the right way to specify them.
Based on the answers to this question, there are several parameters to take into account:
CPU speed + Number of CPU ...
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1answer
399 views
XDEBUG/PHP doesn't dump profile even when set up properly?
I installed xdebug from source, but also tried my package manager (separately) and they both are loaded correctly (verified by restarting Apache and seeing the xdebug copyright info in phpinfo()) but ...
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1answer
398 views
Celery - minimize memory consuption
We have ~300 celeryd processes running under Ubuntu 10.4 64-bit , in idle every process takes ~19mb RES, ~174mb VIRT, thus - it's around 6GB of RAM in idle for all processes. In active state - process ...
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2answers
506 views
Diagnosing poor performance on IIS / ASP.NET / MSSQL app
I'm trying to diagnose the cause of poor performance from a third-party web application we've deployed; the environment is:
ASP.NET on IIS, Windows 2003 Server
SQL Server 2008 on a separate Windows ...
0
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1answer
56 views
Raw hardware utilization profiling
Looking for a way to profile hardware utilization. While it'd be nice to correlate the utilization to the cause of the hardware being use, at this point I'm more interested in as detailed as possible ...
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1answer
533 views
Problems to connect Java visualVM to a EC2-instance
I'm trying to profile a AWS EC2 instance via visualVM.
The instance is in a securitygroup which allows all connections and i'm runing jstatd with a
grant codebase ...
1
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1answer
116 views
Bacula optimization/profiling tools
I'm trying to get an idea of where the bottlenecks are in our backup system. Are there tools available for profiling this? If not, any pointers to a home grown method would also help.
I guess most ...
1
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1answer
255 views
Send email from IIS on some action
Is there a way to send email on, let's say, application pool of some site stop? Or on IIS restart. So that I want see if something happened on remote server by receiving email, is there a method to do ...
2
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2answers
379 views
Visual Studio Profiler In Virtual Machine
I am unable to profile any application using Visual Studio profiler in Virtual Machines.
I have used Virtual machines of Amazon EC2 at work and Virtualbox, Vmware at home.
Also I have used AMD ...
1
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4answers
483 views
Will running RRDtool or Cacti slow down my servers performance?
I'm consider running some performance profile tools like Cacti for my server, but I'm concerned that running RRDtool or Cacti slow down my servers performance? Is this a valid concern for me? Or ...
1
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1answer
88 views
What profiling tool for Linux requires very little overhead?
I need a tool to profile a Linux application, but I can't seem to find any that have little overhead. (By overhead, I mean require a large download or disk space once installed.)
I looked at valgrind ...
3
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5answers
848 views
Linux server performance profiling - how to see what caused high load
If a server is experiencing high load, I use top and similar tools to troubleshoot why. However, this is only effective if I can analyze while the server is experiencing the problem.
What are some ...
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1answer
405 views
What's throttling the database?
Hardware: Intel x86_64 with 192GB of RAM.
OS: CentOS 5.4 x86_64.
DBMS: DB2 v. 9.7.1 64 bit.
During certain special workloads (e.g. parallel REORGs/RUNSTATs), I've
seen the server transporting ...
2
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3answers
638 views
Apache and high load avg
I have an odd problem I am not sure how to analyze further - there is a pretty lighweight website running on a pretty good box(Xeon, 4Gb ram, SATA). Judging by access logs, it get's about 120 requests ...
2
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3answers
2k views
A definition for a CPU second?
Hey,
I'm totally behind this topic.
Yesterday I was doing profiling for some script I'm working on, and the unit for time spent was a 'CPU second'. Can anyone remind me with the definition of it?
...
3
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3answers
244 views
How to profile for HDD usage pattern?
I'm considering upgrading the storage system for some of my servers, and all the guides and manuals advise to consider the storage usage patterns of your app before deciding on a (RAID? SSD? iSCSI? ...
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2answers
992 views
SQL Server: Index utilization statistics?
Is there a way in SQL Server to get a report of index usage?
i know starting with SQL Server 2005, you can get reports of top resource-using queries, based on what's in the Plan Cache:
i'm curious ...
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5answers
1k views
Find which pages cause load?
I'm not normally a sysadmin, but I've got a production server under heavy load (serving some basic php pages, and some php redirect files that have some sql queries, and no images) that keeps ...
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4answers
210 views
“Catch All” Server-Side Load Profiling
If I have an infrastructure with some Web Servers (Windows 2003 and IIS) and a Database (SQL Server 2005) and ASP.net, I wonder if there is a catch-all tool that simply allows me to say "Ok, I now ...
