Now that flash storage is becoming more popular, IO alignment question keeps popping up more often than it used to when all we had were rotating hard disk drives. I think the reason is very simple – when systems only had one bearing hard disk drive (HDD) as in RAID1 or one disk drive at [...] [...more]
In the first part of this article I have showed how I align IO, now I want to share results of the benchmark that I have been running to see how much benefit can we get from a proper IO alignment on a 4-disk RAID1+0 with 64k stripe element. I haven’t been running any benchmarks [...] [...more]
You may have seen in the last couple of weekly news posts that Baron mentioned we are working on a new adaptive flushing algorithm in InnoDB. In fact, we already have three such algorithms in Percona Server (reflex, estimate, keep_average). Why do we need one more? Okay, first let me start by showing the current [...] [...more]
Package: Disk Usage Summary: Calculate the disk space usage of a directory Groups: Files and Folders, PHP 5 Author: Nitesh Apte Description: This class can be used to Calculate the disk space usage of a given directory. It can traverse a given directory recursively and count the total number of directories, files and their sizes. [...] [...more]
ATTO Technology 6Gb/s SAS/SATA And RAID Host Bus Adapters Interoperable With Toshiba Hard Disk Drives ATTO Technology, Inc., a global leader of storage connectivity and infrastructure solutions for data-intensive computing environments, announced recently that its first-to-market 6Gb/s SAS/SATA Host Bus Adapters and 6Gb/s SAS/SATA RAID Host Bus Adapters have met compatibility requirements with Toshiba’s enterprise-class [...] [...more]
