1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking.org

SQLite Now Faster With Memory Mapped I/O

Free Software

Published on 21 May 2013 04:31 PM EDT
Written by Michael Larabel in Free Software
5 Comments

SQLite 3.7.17 was released yesterday. What makes this new release of the popular lightweight SQL database software noteworthy is that it introduces support for memory-mapped I/O.

Rather than using read/write system calls for dealing with database disk files, SQLite 3.7.17 adds support for accessing the disk now by directly using memory-mapped I/O. By using the SQLite memory mapped I/O calls, disk operations should be much faster as the disk contents no longer needs to be copied between kernel and user-space. SQLite developers have said by using this MMIO support the performance could be nearly doubled for some intensive tasks.

By using memory-mapped I/O, the SQLite library will also use less RAM since it shares pages with the operating system page cache rather than creating copies of those pages as with the old system calls. More details on this new mmap support in SQLite can be found on SQLite.org.

Other changes with SQLite 3.7.17 include new sqlite3 interfaces, enhancements to the extension loading mechanism, enhancing FTS3, virtual table improvements, and many bug-fixes. More details on the new SQLite library release can be found from its release page.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Linux Hardware Reviews
  1. Scythe Mugen MAX
  2. Intel Core i7 5960X Haswell-E On Linux
  3. Intel 80GB 530 Series M.2 SSD On Linux
  4. With A New Motherboard, The Core i7 5960X Haswell-E Lights Up
Latest Linux Articles
  1. Fedora 21 Alpha First Impressions: It's Great
  2. Counter-Strike: Global Offensive NVIDIA/AMD Benchmarks On Linux
  3. A Tour Of The New Phoronix Office
  4. 7-Way Linux Desktop Gaming Comparison On Ubuntu 14.10
Latest Linux News
  1. Oracle & Canonical Collaborate Over Their Competing Linux OSes On OpenStack
  2. Google Brings Coreboot To 64-bit ARM
  3. Debian Switches Back To GNOME As Its Default Desktop
  4. Fedora 21 Alpha Finally Sees The Light Of Day
  5. Qt 5.4 Will Support Applications Under A Wayland Compositor
  6. Valve Rolls Out A New Steam Storefront
  7. The Features Coming For Fedora 21
  8. Counter-Strike: Global Offensive Starts Rolling Out To Linux Users
  9. The Gestures Support Of GNOME 3.14
  10. Linux 3.17 Has Basic Support For The Xbox One Controller
Latest Forum Discussions
  1. Updated and Optimized Ubuntu Free Graphics Drivers
  2. Uselessd: A Stripped Down Version Of Systemd
  3. Wasteland 2 Officially Launched Today, Including For Linux Gamers
  4. X.Org Women Outreach Program Only Turns Up Two Applicants So Far
  5. NVIDIA GTX 770/780 -works ?
  6. State of Nouveau now and in the near future?
  7. New stress testing utility for GPU's
  8. How to get Catalyst 14.4 working on Ubuntu 14.04