Performance tuning is the process of modifying a system to improve its efficiency. This is also known as optimizing.

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Looking for comparisons of disk i/o for a dedicated MySQL server

We hired a consultant to help us increase the capacity of our MySQL cluster, and the first thing (almost only thing) he did was to measure the disk i/o speed of our servers. I am interested in a ...
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1answer
121 views

What resources on OpenVMS Performance Management do you recommend?

I'm looking for details about how to measure OpenVMS performance, such as what all of the different reported statistics mean and how to adjust for them. In particular, I'm currently investigating ...
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8answers
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Hard Drive Speed: RPM vs. Cache

When trying to choose a SATA magnetic hard drive (not SSD) for high performance for both random and linear access, which should be the primary factor? For example: would a 10k RPM drive with 16MB ...
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3answers
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NetBackup Multiplexing for Oracle RMAN Backups

My question is... what multiplexing factor in NetBackup is recommended / do you use for Oracle RMAN backups over 1Gb/s management network to LTO3? JB Background: With enterprise backup tools like ...
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5answers
671 views

Trouble shooting wireless signal performance

I just performed a wireless network scan and my primary wireless route broadcasts a consist 70 DBm signal. I added a range extender that increases or decreases the signal 65 DB (Not sure how the DB m ...
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4answers
268 views

Exchange 2003 I/O Troubles

We have some internal processes that send email to our Exchange 2003 system (on Win2K3 R2 32bit). Recently they have been intermittently failing with various errors -- boiled down they report ...
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3answers
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Database I/O acceleration using solid state drives

What is the experience improving database performance using solid-state drives (particularly for PostgreSQL databases) such as HP's IO Accelerator? Did you see any marked improvements?
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Oracle tuning optimizer index cost adj and optimizer index caching

What is the correct way to set the optimizer index cost adj parameter for Oracle. As a developer I have observed huge performance improvements as this parameter is lowered. Common queries are ...
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5answers
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What could be causing memory creep on a VPS?

I've got a VPS package. I cannot log into my lxadmin because it is "out of memory". In HyperVM I see that my VPS is using 240 MB of 256 MB. When I reboot the HyperVM, the memory goes down to 2 MB. ...
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3answers
796 views

What should I set the initial MySQL Values in My.cnf to for Performance?

I am just setting up my new Linux Ubuntu 8.04 LTS server now, and getting ready for launch. My application is a PHP built application using the Zend Framework, and there is a MySQL heavy site (as are ...
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3answers
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What program can I use to benchmark network traffic? [duplicate]

Possible Duplicate: How to test real network throughput between two points? Given two computers connected by some network interface, is there a standard tool used by an academics publishing ...
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2answers
365 views

Is there any way to exclude specific files / directories from SuperFetch?

Overall, I love the SuperFetch feature in Vista and believe it results in hugely noticeable gains in the launch time and overall "snappiness" of the system. However, sometimes it apparently gets ...