![]() While SMC-R does not aim to replace TCP, it taps a wealth of existing data center TCP socket applications to become more efficient without the need for rewriting them. SMC-R is an IBM protocol that provides RDMA capabilities over RoCE transparently for applications exploiting TCP sockets. This release includes the initial part of the implementation of the "Shared Memory Communications-RDMA" (SMC-R) protocol as defined in RFC7609. It enables users to setup/unlock/lock locking ranges for SED devices using the Opal protocol.ġ.7. This release adds Linux support for Opal nvme enabled controllers. That is, it is a specification for self-encrypting drives. For example, it defines a way of encrypting the stored data so that an unauthorized person who gains possession of the device cannot see the data. The Opal Storage Specification is a set of specifications for features of data storage devices (such as disk drives) that enhance their security. More features are expected in future releases. Only single thread tracing and the tool just reads trace_pipe in text and then write it to stdout. In this release, it only supports two tracers, function_graph or function (default tracer is function_graph, it can be configured in the acer config key). This tool intends to be a simple perf front-end for the already existing ftrace interface. statx(2), a modern stat(2) alternativeĭue to several shortcomings in the stat(2) system call (like not being y2038 ready or not playing well with networking filesystems), a new system call has been worked through the years, with the final result being statx(2), a new system call that has been added in this release.Ī new tool has been added to the perf toolkit: perf ftrace. Recommended LWN article: A journal for MD/RAID5īlog entry: Improving software RAID with a write-ahead logġ.4. With a journal device configured (typically NVRAM or SSD), the " RAID5 write hole" is closed - a crash during degraded operations cannot result in data corruption. Journaled RAID5 to close the write holeīased in work started in Linux 4.4, this release adds journalling support to RAID4/5/6 in the MD layer (not to be confused with btrfs RAID). Recommended LWN article: Making swapping scalableĬode: commit, commit, commit, commit, commit, commit, commit, commit, commitġ.3. This release makes the swap implementation more scalable, making it more suitable for use with modern storage devices. However, the swapping implementation was designed for traditional rotating hard disks, where the performance and latency of the swap did not matter as much as it does with modern storage. ![]() Cloud providers, for example, can overcommit memory more aggressively and fit more VMs to a platform with a fast swap device. ![]() Modern storage devices such as SSDs are making the usage of swapping attractive not just as a way to deal with excessive memory load, but also as a performance enhancement technique. A port of the deadline scheduler has also been added (more IO schedulers will be added in the future) This release solves that problem with the merge of a multiqueue-ready IO scheduling framework. However, this new multiqueue design didn't include support for pluggable IO schedulers. In Linux 3.13, the block layer added a new multiqueue design that performs better with modern hardware (eg. The Linux block layer is know to have different IO schedulers (deadline, cfq, noop, etc) with different performance characteristics each one, and users are allowed to switch between them on the fly. Pluggable IO schedulers framework in the multiqueue block layer Voltage, current regulators, power capping, power supplyġ.1.ACPI, EFI, cpufreq, thermal, Power Management.Tablets, touch screens, keyboards, mouses.Persistent scrollback buffers for all VGA consoles.Support for the SMC-R protocol (RFC7609).Journaled RAID5 to close the write hole.Pluggable IO schedulers framework in the multiqueue block layer.Clear QAM is not available from all cable operators, so check with your cable operator for clear QAM availability. ** Surround sound audio is on some ATSC and clear QAM digital TV broadcastsĬlear QAM is unencrypted digital cable TV, and can be received by connecting directly to a cable TV wire (no cable box needed).** The Cordcutter TV comes with apps for Apple iOS (iPhone and iPad),s Android (example: Samsung phone and tablet) and the Amazon FireTV box. ![]() ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |