Tag - meltdown

This Week in Data with Colin Charles 28: Percona Live, MongoDB Transactions and Spectre/Meltdown Rumble On

Colin Charles

Join Percona Chief Evangelist Colin Charles as he covers happenings, gives pointers and provides musings on the open source database community.
In case you missed last week’s column, don’t forget to read the fairly lengthy FOSDEM MySQL & Friends DevRoom summary.
From a Percona Live Santa Clara 2018 standpoint, beyond the tutorials getting picked and scheduled, […]

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This Week in Data with Colin Charles 25: Meltdown/Spectre still dominate, FOSDEM approaches and Timescale gets funding

Colin Charles

Join Percona Chief Evangelist Colin Charles as he covers happenings, gives pointers and provides musings on the open source database community.
Still on Meltdown/Spectre, this time MariaDB Corporation has published Meltdown Vulnerability Impact On MariaDB Server – interesting the comparison between glibc/tcmalloc. Worthy Facebook thread about this too, with a bit of chat about MongoDB performance. […]

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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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Does the Meltdown Fix Affect Performance for MySQL on Bare Metal?

Meltdown Fix Affect Performance small

In this blog post, we’ll look at does the Meltdown fix affect performance for MySQL on bare metal servers.
Since the news about the Meltdown bug, there were a lot of reports on the performance hit from proposed fixes. We have looked at how the fix affects MySQL (Percona Server for MySQL) under a sysbench […]

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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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