Systems Performance

Marsoni

M251S

$58.83

Get it in 3 business days with 1 day shipping. Friday, May 29

Systems PerformanceSystems Performance, Second Edition, covers concepts, strategy, tools, and tuning for operating systems and applications, using Linux based operating systems as the primary example. A deep understanding of these tools and techniques is critical for developers today. Implementing the strategies described in this thoroughly revised and updated edition can lead to a better end user experience and lower costs, especially for cloud computing environments

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I got these for my husband to wear with jeans or business casual dress pants. They look sharp and professional and dress up jeans if you're going out. He says they fit comfortably and he can walk on them all day without his feet hurting. They are beautiful genuine leather so they don't get stinky. I got my husband's normal size and they fit to size.

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Reviewed in the United States on February 11, 2026

Verified Purchase

timothy scalabrelli

Lake Worth, US

★★★★★ 4

Comfortable

Size: 9, Color: Black/Ivory

Most comfortable and roomy shoes I ever wore. Great for insoles. Looks nice too. The base of the shoe is a bit too thick but it’s fine.

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Reviewed in the United States on September 5, 2025

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Jennay

Phoenix, US

★★★★★ 5

Mens shirt

Size: 17"-17.5" Neck 36"-37" Sleeve, Color: Lavender Blue Check

It's a very well made shirt. I got it for my husband, he has to wear this kinda stuff for work. He actually loves this brand of shirt. Very comfortable. I actually got it on Amazon days or whatever it's called. So the price was cheaper than normal:)

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Reviewed in the United States on August 13, 2025

Verified Purchase

Joe Anderson

Los Angeles, US

★★★★★ 5

My original dress shirt in white.

Size: 15"-15.5" Neck 34"-35" Sleeve, Color: Grey Sage Check

Tried and true dress shirt but I love how the collar stays are actually sewn into the collar.

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Reviewed in the United States on October 29, 2025