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 Benchmarking Platform
Phoromatic Test Orchestration

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 Articles & Reviews
  1. Ubuntu 15.04 Offers Faster OpenGL For AMD Radeon GPUs On Open-Source
  2. Ubuntu 15.04 Brings Some Graphics Performance Improvements For Intel Haswell
  3. Sub-$20 802.11n USB WiFi Adapter That's Linux Friendly
  4. The Lenovo T450s Is Working Beautifully With Linux
  5. Linux 4.0 SSD EXT4 / Btrfs / XFS / F2FS Benchmarks
  6. Linux 4.0 Hard Drive Comparison With Six File-Systems
Latest Linux News
  1. The Difference In Optimizations Between NIR & GLSL
  2. OpenMandriva Lx 3 Alpha: Adds UEFI Support, Defaults To LXQt
  3. Systemd Kills Off Shutdownd
  4. There's Now More Than 1,100 Games On Steam For Linux
  5. Btrfs In Linux 4.1 Has Fixes For File-Systems Of 20 Terabytes & Up
  6. Microsoft's CoreCLR Now Works On FreeBSD
  7. Unigine 2.0 Beta 2 Brings PBR, SSR, Kinect 2 Support
  8. KDBUS Still Hasn't Been Pulled, Might Not Land For Linux 4.1
  9. The State Of The Lima/Tamil Driver Code
  10. The New Linux Performance Test Lab Is Already Being Expanded
Most Viewed News This Week
  1. AMD Releases New "AMDGPU" Linux Kernel Driver & Mesa Support
  2. EXT4 In Linux 4.1 Adds File-System Level Encryption
  3. My Favorite Computer Desk Of The Past Decade For Less Than $100
  4. AMD Open-Sources "Addrlib" From Catalyst
  5. Library Operating System (LibOS) For Linux Still Being Pursued
  6. Linux-Powered Endless Computer Raises $100k+ In A Few Days
  7. Features Thus Far For The Linux 4.1 Kernel
  8. GIMP's Porting To GTK3 Continues