Monthly Archives: April 2012

EPRD & lessfs

To get an idea of the efficiency of EPRD caching I repeated the lessfs benchmark test with EPRD caching the Intel 320 SSD. The Intel 320SSD was registered as /dev/sdc. EPRD was setup like this : ./eprd_setup -f /dev/sdc -m … Continue reading

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Lessfs-1.5.12 performance

Introduction People frequently ask what the performance is that they may expect from Lessfs. This article will give an indication of what to expect. About the hardware All the tests are done using an Intel 5520HC system board with a … Continue reading

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Lessfs-1.5.11

Lessfs-1.5.11 now allows users to specify the cache size that hamsterdb will use internally. This version also solves a bug in configure.ac that would cause configure with –disable-debug to actually enable debugging. This bug caused users to report very low … Continue reading

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Lessfs-1.5.10 has been released

Lessfs-1.5.10 adds support for hamsterdb-2.0.1. A small change in the Hamsterdb API makes the transition from the 1.x series not completely transparent. Do not use Lessfs with hamsterdb-2.0 since it comes with a nasty bug. Please use the latest hamsterdb-2.0.1. … Continue reading

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EPRD – An eventually persistent ramdisk / disk cache

Today I uploaded a kernel project that I call eprd. This kernel module allows you to create a persistent ram disk. It can also be used to use DRAM to cache disk IO. Of course this comes with all the … Continue reading

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