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A MyRocks Use Case

Percona

The use case is the TPC-C benchmark but executed not on a high-end server but on a lower-spec virtual machine that is I/O limited like for example, with AWS EBS volumes. I decided to use a virtual machine with two CPU cores, four GB of memory, and storage limited to a maximum of 1000 IOPs of 16KB. InnoDB and MyRocks dataset sizes.

Storage 55
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HammerDB v4.10 New Features: Purge and Write back for MariaDB TPROC-C

HammerDB

This is particularly important when running automated workloads back-back to generate a performance profile for a progressively increasing number of virtual users. Once the run has completed it will dynamically set the variables to run the purge and write back and restore your variables when complete.

C++ 62
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Building an elastic query engine on disaggregated storage

The Morning Paper

If all data was read from S3 every time, performance would suffer, so of course Snowflake has a caching layer – a distributed ephemeral storage service shared by all the nodes in a warehouse. The caching use case may be the most familiar, but in fact it’s not the primary purpose of the ephemeral storage service.

Storage 112
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Are Imposter Domains Re-Publishing Your Website?

Smashing Magazine

And of course, scrapers could scrape your site to look for security vulnerabilities or exposed contact or sales lead details. Search Engine And Web Archive Cached Results. Another common category of imposter domains are domains used by search engines for delivering cached results or archived versions of page views. Ad Scraping.

Website 89
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Architectural Myopia

ACM Sigarch

Virtualization, for instance, was being addressed by IBM in the 1960s. Both virtualization and power burst onto the architecture community seemingly out of nowhere even though there was a clear historical basis and trend for both. I had a professor in grad school who used to joke that all architecture is reinvented every 5 years.

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Making Windows Slower Part 2: Process Creation

Randon ASCII

And, of course, this post will also cover how to detect and avoid this problem. A long-standing correctness bug in the Windows file cache: Compiler bug? This is a CPU bound problem because all of the relevant disk data is cached. Unplanned serialization that lead to full-system UI hangs: 24-core CPU and I can’t move my mouse.

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The Return of the Frame Pointers

Brendan Gregg

Only in extreme circumstances does the cost (in processor time and I-cache footprint) translate to a tangible benefit - circumstances which usually resort to hand-coded assembly anyway. It shouldn't be 10%, unless it's cache effects. But I'd rather the cost be zero, of course!

Java 145