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On Self Describing Filesystem Metadata, by Darrick Wong

The following is a write-up by Oracle mainline Linux kernel engineer, Darrick Wong, providing some backround on his work on Linux FS Metadata Checksumming, which, after many years of work, will will be turned on by default in the upcoming e2fsprogs 1.43 and xfsprogs 3.2.3. One of the bigger problems facing filesystems today is the problem of online verification of the integrity of the metadata. Even though storage bandwidthhas increased considerably and (in some cases) seek...

Friday, May 29, 2015 | Linux | Read More

We're Hiring! Linux Kernel Performance Engineer

Our team is looking for an experienced Linux Kernel Performance Engineer, located in the SF Bay Area or Broomfield, CO. Click here for details: https://oracle.taleo.net/careersection/2/jobdetail.ftl?job=15000KP0&lang=en Linux community experience is highly valued. Oracle is an Equal Employment Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender...

Friday, May 1, 2015 | Linux | Read More

Improving Sunvnet Performance on Linux for SPARC, by Sowmini Varadhan

The following is a write-up by Oracle mainline Linux kernel engineer, Sowmini Varadhan, detailing her recent work on improving the performance of the Sunvnet driver on Linux for SPARC. Background In the typical device-driver, the Producer (I/O device) notifies the Consumer (device-driver) that data is available for consumption by triggering a hardware interrupt at a fixed Interrupt Priority Level (IPL). In the purely interrupt-driven model,the Consumer then masks off any...

Tuesday, December 2, 2014 | Linux | Read More

China Linux Storage and File System (CLSF) Workshop 2014

This is a contributed post by Oracle mainline Linux kernel developer, Liu Bo, who recently presented at the 2014 China Linux Storage and File System (CLSF) Workshop.  This event was held on October 21st in Beijing.  OCFS2 Xue Jiufei from Huawei showed us their work on OCFS2 of the last year, including bug fixes like "Packet loss when reconnect" and a few features like "Range lock based on DLM" and "Self-heal when fault recover". She also mentioned that Huawei already plans to...

Monday, November 17, 2014 | Linux | Read More

Upcoming BTRFS Presentation by Liu Bo at the Korea Linux Forum

Oracle Linux kernel developer, Liu Bo, will be giving a presentation on BTRFS Integrity at the Korea Linux Forum on 11th Nov 2014. In VerifyFS in Btrfs Style, Liu Bo will discuss his current work on extending BTRFS to include integrity verification: There are different scenarios where we need to check whether we can trust an FS image that was handled by other untrusted parties, that means we need to have every part of the FS unchanged. Security is indeed important at any time....

Thursday, November 6, 2014 | Linux | Read More

Improving the Performance of Transparent Huge Pages in Linux, by Khalid Aziz

The following is a write-up by Oracle mainline Linux kernel engineer, Khalid Aziz, detailing his and others' work on improving the performance of Transparent Huge Pages in the Linux kernel. Introduction The Linux kernel uses small page size (4K on x86) to allow for efficient sharing of physical memory among processes. Even though this can maximize utilization of physical memory, it results in large numbers of pages associated with eachprocess and each page requires an entry in...

Tuesday, August 12, 2014 | Linux | Read More
 

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