Fengguang wu linux software

Linux test project, dave joness trinity quite effective lately automatedrecurring testing stephen rothwells next testing fengguang wus kbuild test robot see next slide frequent testing from many individuals and organizations tools. To that end, fengguang wu has been working on a set of adaptive readahead patches for a. Patch 09 allow persistent memory to be used like normal. Software variability and software product lines for me, commonly know as ifdef challenges. Internal space stations linux highperformance computer could help future mars mission linus torvalds quietly released the latest linux 4. As linux runs an increasing variety of workloads, its inkernel prefetching algorithm has been challenged by. Wu fengguang authored jan 07, 2009 this is to avoid name clashes for the introduction of a global swap macro. Software variability and software product lines for me, commonly know as ifdef challenges this is outside my area of expertise i work with the linux kernel core network stack cannot solve your research problems ill share my interactions with annoying ifdefs in hope to give insight into more problems to solve. On the scalability of linux kernel maintainers work. On the scalability of linux kernel maintainers work software. Motivation of software developers in open source projects. To provide more information about a project, an external dedicated website is created. Oracle linux 7 unbreakable enterprise kernel security update aarch64.

The linux developers had previously announced that 4. Bjorn helgaas when a process uses sysfs and tries to mmap more space than is available in a pci bar, we emit a warning and a backtrace. Traffic volumes are immense, often reaching 10,000 messages in a week, and keeping up to date with the entire scope of development is a virtually impossible task for one person. The presentation given by fengguang wu on day 1 of the 2012 kernel summit was about testing for build and boot regressions in the linux kernel. On the scalability of linux kernel maintainers work proceedings of. Feng shui software make the most of your home and office. Write and writeback user application kernel flusher thread dirty pages and writeout pages after immediately return dirty expired 30s avoid blocking. Approaches to performance can be considered either reactive or proactive. Nov, 2017 led by intel engineer fengguang wu, this zeroday security testing system automatically and constantly run regression tests on the mainline kernel and over 400 linux developer trees.

But in general we dont emit kernel messages when syscalls return failure. Unbreakable enterprise kernel security update for oracle linux 7. On the design of a new linux readahead framework acm. University of science and technology of china, hefei. This establishes a clear link between 01 and the project, and help to have a stronger presence in all internet. Greetings, we get the below oom errors in our kvm boot tests and they are. With all of these software tools, you have everything you need to effectively manage your small business. Evaluation and optimization of kernel file readaheads based on markov decision models. Toggle navigation patchwork linux ext4 filesystem development patches bundles about this project login. Jul 18, 2006 the first day of the 2006 linux kernel summit was held on july 17 in ottawa. Across thread and execution sampling for inhouse race detection.

The workaround for the expected failure is providing another failure. The linux kernel mailing list comprises the core of linux development activities. Web help desk, dameware remote support, patch manager, servu ftp, and engineers toolset. Identifying productivity drivers by modeling work units using partial data. As you are getting errors when building documentation files, i dont think this is a staging tree specific issue, as i havent changed anything in that directory that i can see.

Oct 28, 2015 fengguang wu from intel told me that theyre using btrfs a bit on their autotest farm but often experience latency issues and we talked about using btrfs as dockers storage backend, everything seems perfect except each docker instance is an individual namespace so that theyre not able to share page caching for the same content. Open source software ecosystems evolve ways to balance the workload among groups of participants ranging from core groups to peripheral. The inside story of an intel software quality award. The patches from fengguang and motohiro can be found in this linux kernel mailing list thread. China linux storage and file system clsf workshop 2015 report. Go to the 2006 kernel summit coverage subscribers only for discussions on a number of topics, including summaries from various kernel minisummits, kernel quality and the development process, the ioctl interface, the kernel abi, software suspend, and kernel. Feb 25, 2019 add stephen and juergen on mon, feb 25, 2019 at 11. Kedr provides runtime analysis of linux kernel modules including device drivers, file system modules, etc.

In proceedings of the 2017 11th joint meeting on foundations of software engineering esecfse 2017. Team members in china and oregon, led by senior software engineer fengguang wu, created the 0day validation infrastructure to automate linux kernel regression testing that immediately detects, isolates, and reports issues critical to driving ia quality by running about 36,000 tests every day on approximately 450 new patch sets. An updated linux kernel is available for oracle linux 7. Customer service customer experience point of sale lead management event management survey. In the presentation, fengguang described the test framework that he has established to detect and report these regressions in a more timely fashion. Hi john, the below lockup warning pops up very occasionally in kvm guest kernels and its bisected down to. Create a project open source software business software. Minghui zhou, qingying chen, audris mockus, and fengguang wu.

It is especially of interest as a good number of active developers are subscribed to this list. Greetings, the below errors show up in both upstream and linux next. I pulled your tree into linux next next20110415 on an i386 debian host. Yuanhan liu, susie li, fleming feng, tim chen, fengguang wu, bob kasten. Sparse warns that the percpu variables arent declared before they are defined.

This is intended for use with nvdimms that are physically persistent physically like flash so that they can be used as a costeffective ram replacement. Linux test project ltp collection of tools for testing the linux kernel and related features started by sgi maintained by ibm, cisco, fujitsu, suse, red hat and others. Dec 04, 2019 fengguang has 6 repositories available. In proceedings of the 10th workshop on hot topics in operating systems hotos, 2005. Patch 03 make mapped executable pages the first class citizen with test cases. Toggle navigation patchwork linux v4ldvb mailing list. Never before has such powerful feng shui software been available to the public or feng shui professionals. The mmap fails anyway, so the backtrace is mainly for debugging. Enables linux to be scalable, not just a part of it. Intel corporationuniversity of science and technology of china. Collection of tools for testing the linux kernel and related features. See these phoronix articles wu fengguang and kosaki motohiro have published patches this week that they believe will address some of these responsiveness issues, for which they call the system goes unresponsive under memory pressure and lots of dirty. Contribute to torvalds linux development by creating an account on github. Updated for 2020, year of the yang metal rat geng zi would you like to perform your own professional feng shui consultation and print out over 70 pages of personalised reports and charts.

It includes many capabilities, including fuzzer support. On the design of a new linux readahead framework acm sigops. Jan 24, 2019 from dave hansen to linuxkernelatvger subject. Toggle navigation patchwork linux pci development patches bundles about this project login. Patch 05 v4 allow persistent memory to be used like normal ram. Fengguang wu s 4 research works with 68 citations and 308 reads, including. Oracle linux 7 unbreakable enterprise kernel security update elsa20194820 important. Led by intel engineer fengguang wu, this zeroday security testing system automatically and constantly run regression tests on the mainline kernel and over 400 linux developer trees. Linux kernel performance tests shell 65 107 gnu general public license v2. Fengguang wu subject patch pssproportional set size accounting in smaps. Sequential prefetching is a well established technique for improving io performance.