Light-Weight Clones — FAQ

posted on May 3, 2017 by Amit Golander

About a year ago, a light-weight clone API was standardized and added to POSIX. The storage-agnostic API empowers users, so that they can create a logically cloned file at close-to-zero time and capacity overheads: # cp --reflink   dir1/SrcFile   dir2/CopyFile Plexistor supports the POSIX-compliant LW-Clone API since our M1FS v2.0 release in 2016. Since then however, we had several repeating questions, which we would like to address in this FAQ. The three most frequently [...]

Synchronous programming: Simpler & More Efficient

posted on March 29, 2017 by Amit Golander

Google has published its synchronous programming vision, which is: Simpler to program More efficient "The Attack of the Killer Microsecond" video & pdf is a technical writeup with a marketing-like title. It points out that the hardware technology (e.g. persistent memory) required for greater efficiencies is here, but the matching software is scarce. It is not every day that you find out that a vision you already productized is Google's wet dream... Googlers [...]

Reclaim Your CPU (Exemplified by PostgreSQL)

posted on January 25, 2017 by Amit Golander

Did you ever stop to think how much of the expensive CPU you purchased actually works for you? Did you just buy the more expensive CPU (e.g., E5-2699) to be on the safe side? Maybe you could have saved thousands of dollars and settled for the much cheaper E5-2650? Several months ago, a grad student from Tel-Aviv University presented at the ICSEE conference an interesting research of what your CPU does for [...]

Lightweight Clones “cp –reflink”

posted on November 7, 2016 by Amit Golander

Background Cloning a file, also commonly referred to as creating a Snapshot, is a very useful operation. Especially, if you can clone the data in a rapid, simple, low-overhead and coherent manner. Cloning usage varies. Creating on-demand database images for backups; replicating machine images (e.g., VDI); and forking live production environments in order to provide an instantly-available safe sandbox for developers, data scientists or QA, are just a few usage examples. [...]

Redis Labs Cuts Operational Costs with Plexistor

posted on October 9, 2016 by Amit Golander

  Guest post by:     Yiftach Shoolman, CTO     Redis Labs, home of Redis, the world’s most popular in-memory NoSQL database Redis Labs delivers enterprise grade Redis, both as a cloud service (Redis Cloud) and as downloadable software (Redis Labs Enterprise Cluster, RLEC). Redis Lab’s customers enjoy zero-downtime seamless scaling, and effortless cross-region, cross-datacenter high availability with automatic failure detection & failover, in addition to the high throughput and sub-millisecond latencies of [...]

Reducing Oracle Database Cost

posted on October 5, 2016 by Amit Golander

Guest post by:      Efstathios Efstathiou, Master Database Engineer,      Federal Office of Information Technology, Systems and Telecommunication (FOITT) This blog post is quick summary of my presentation at the Swiss Oracle User Group (SOUG), Sep. 20th 2016. The full set of slides is available at: The Pain As everyone knows, Oracle Enterprise Database is an excellent solution. Excellent, but very expensive. Many efforts have been taken to improve the per-core efficiency and I/O [...]

The Storage Olympics

posted on August 2, 2016 by Amit Golander

No Doping Scandal Here! Maybe a few dopes, though.  After all, anyone can compete in the Storage System Olympics. Do you have an extent-based design written entirely in a defunct minicomputer company’s command line scripting language?  Bring it on.  Tuned for throughput, with musclebound 200 megabyte gulps lumbering down the test rig, you might score a Gold Medal for Throughput. Even if your Frankenstein monster is useless in the real world. Or [...]

Ubuntu 16.04 LTS just got better

posted on July 21, 2016 by Amit Golander

Today Ubuntu 16.04 reached maturity - the Long Term Support (LTS) phase. This is a big deal, because most Canonical users move from one LTS version to another, every two years, while skipping the minor intermediate versions. I won't bore you with how Ubuntu server 16.04 is better than the previous 14.04 LTS version. Just imagine how much progress was made in Docker and the Linux Kernel in two years. Entire [...]


posted on June 30, 2016 by Amit Golander

Last week we had the honor of meeting a dozen sharp technology analysts. A lot of interesting questions were asked. A nice by-product of the TFD event is that it is recorded, so several nice videos are available online. These videos explain the product and show results of several databases accelerated by SDM. You're welcome to get popcorn and watch: Product (15min)                    - Technology [...]

Ampool data pipeline on Plexistor SDM @ IMC Summit

posted on May 24, 2016 by Amit Golander

Today was the 1st day of In-memory Computing (IMC) summit at San Francisco. Approximately 350 Big Data fans gathered, exchanged ideas and walked by the different booths. Hopefully, they will all return tomorrow to attend our talk on the benefits of Memory and Storage convergence to in-memory computing. In-memory computing frameworks using SDM can be split to two types: Existing IMC frameworks – in which, the benefit should be seen out-of-the-box [...]


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