Tag - intel

20-30% Performance Hit from the Spectre Bug Fix on Ubuntu

Spectre Bug Fix on Ubuntu

In this blog post, we’ll look at the performance hit from the Spectre bug fix on Ubuntu.
Recently we measured the performance penalty from the Meltdown fix on Ubuntu servers. It turned out to be negligible.
Today, Ubuntu made a Spectre bug fix on Ubuntu available, shipped in kernel 4.4.0-112. As with the Meltdown fix, we […]

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Meltdown and Spectre: CPU Security Vulnerabilities

CPU Security Vulnerabilities

In this blog post, we examine the recent revelations about CPU security vulnerabilities.
The beginning of the new year also brings to light fresh and new CPU security vulnerabilities. Today’s big offenders originate on the hardware side – more specifically, the CPU. The reported hardware kernel bugs allow for direct access to data held in the […]

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Percona Live 2016: Performance of Percona Server for MySQL on Intel Server Systems using HDD, SATA SSD, and NVMe SSD as Different Storage Mediums

We’re moving along on the first day at Percona Live 2016, and I was able to attend a lecture from Intel’s Ken LeTourneau, Solutions Architect at Intel, on Performance of Percona Server for MySQL on Intel Server Systems using HDD, SATA SSD, and NVMe SSD as Different Storage Mediums. In this talk, Ken reviewed some benchmark […]

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Hyper-threading -How does it double CPU throughput?

Hyper-threading

The other day a customer asked me to do capacity planning for their web server farm. I was looking at the CPU graph for one of the web servers that had Hyper-threading switched ON and thought to myself: “This must be quite a misleading graph – it shows 30% CPU usage. It can’t really […]

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