Solaris to Linux Migration 2. Many people have contacted me recently about switching from Solaris or illumos to Linux, especially since most of the Solaris kernel team were let go this year including my former colleagues, Im sorry to hear. This includes many great engineers who Im sure will excel in whatever they choose to work on next. They have been asking me about Linux because Ive worked for years on each platform Solaris, illumos, and Linux, in all cases full time and as a subject matter expert. Ive also done some work on BSD, which is another compelling choice, but Ill discuss that another time. The following is my opinion and not an official guide to any OS. Switching from Solaris to Linux has become much easier in the last two years, with Linux developments in ZFS, Zones, and DTrace. Ive been contributing out of necessity, including porting my DTrace. Toolkit tools to Linux, which also work on BSD. TheINQUIRER publishes daily news, reviews on the latest gadgets and devices, and INQdepth articles for tech buffs and hobbyists. The home page for SPEC, the Standards Performance Evaluation Corporation, a standards body for performance benchmarks. What follows are topics that may be of interest to anyone looking to migrate their systems and skillset scan these to find topics that interest you. ZFSZFS is available for Linux via the zfsonlinux and Open. Security. Lets face it. Software has holes. And hackers love to exploit them. New vulnerabilities appear almost daily. If you have software we all do you need to. Solaris 10 Kernel Patch Versions' title='Solaris 10 Kernel Patch Versions' />ZFS projects, and more recently was included in Canonicals Ubuntu Linux distribution Ubuntu Xenial 1. LTS April 2. 01. It uses a Solaris Porting Layer SPL to provide a Solaris kernel interface on Linux, so that unmodified ZFS code can execute. My company uses ZFS on Linux in production, and Ive been the go to person for deep ZFS problems. It feels largely the same, except kstats are in procsplkstatzfsarcstats, and I debug it with Linux tracing tools instead of DTrace more on that next. Igi 5 Full Pc Game. DDDFKicT8/UhTn5tHMirI/AAAAAAAABpo/WhAaECn0YDg/s1600/oracle+support+8.jpg' alt='Solaris 10 Kernel Patch Versions' title='Solaris 10 Kernel Patch Versions' />There have been some issues on Linux, but overall its been ok, especially given how hard we push ZFS. Weve used it for our container hosts codename Titus that do frequent snapshots, use sendrecv, etc. I think the ARC memory counters need more work, as people keep capping the ARC to avoid keeping memory from applications, and the ARC should already handle that with the exception of massive allocations. Theres also a ZFS sendrecv code path that should try to use the TASKINTERRUPTIBLE flag as suggested by a coworker, to avoid a kernel hang cant kill 9 the process. Both of those should be easy fixes. There are plenty of other bugs to fix, though, which you can see in the issue list on github. Linux has also been developing its own ZFS like filesystem, btrfs. Linux NFS Overview, FAQ and HOWTO Documents This document provides an introduction to NFS as implemented in the Linux kernel. It links to developers sites, mailing. Datasheet for the Solaris 9 Operating System. The Solaris 9 OS Is Secure Network Security. Solaris Secure Shell. Solaris Secure Shell software enables strong. James D March 10, 2017 at 2042. The author seems to be confusing a couple machines. The TRS80 Color Computer came out in 1980, but it was based on the 6809 which is. Since its been developed in the open unlike early ZFS, people tried earlier IS EXPERIMENTAL versions that had serious issues, which gave it something of a bad reputation. Its much better nowadays, and has been integrated in the Linux kernel tree fsbtrfs, where it is maintained and improved along with the kernel code. Since ZFS is an add on developed out of tree, it will always be harder to get the same level of attention. Were now testing container hosts in production on btrfs, instead of ZFS. Facebook have been using btrfs for a while in production, and key btrfs developers now work at Facebook and continue its development. There is a btrfs status page, but for the latest in development see btrfs posts to the linux kernel mailing list and btrfs sections on kernelnewbies. Its a bit early for me to say which is better nowadays on Linux, ZFS or btrfs, but my company is certainly learning the answer by running the same production workload on both. I suspect well share findings in a later blog post. Observability. Heres the big picture of performance observability tools on Linux, from my Linux performance page, where I also have diagrams for other tool types, as well as videos and slides of prior Linux performance talks I also have a USE Method Linux Performance Checklist, as a different way to navigate and apply the tools. Linux has many more text interfaces in proc that Solaris does, which help for ad hoc debugging. It sounds inefficient, but Ive never seen proc readers show up in CPU flame graphs. DTrace. Linux 4. 9 provides the raw capabilities to implement DTrace like scripts, allowing me to port over many of my DTrace. Toolkit scripts they also work on BSD. The hardest part on Linux is now done kernel support. I wrote about it in a previous post, DTrace for Linux 2. You might also like my Give me 1. Ill change your view of Linux tracing video as an introduction to the different built in Linux tracers. Nowadays, there are three built in tracers that you should know about ftrace since 2. Its fast, but limited in places, and usually only suited as a single user tool there are workarounds. I wrote an ftrace toolkit, perf tools, and the article Ftrace the hidden light switch. PMC profiler but can do tracing now as well, usually in a dump and post process style. Left 4 Dead Game Of The Year Edition Difference'>Left 4 Dead Game Of The Year Edition Difference. Its the official profiler. I wrote a page on it perf. BPF tracing features completed in 2. Many new tools can now be written, and the main toolkit were working on is bcc. Heres some output from my zfsdist tool, in bccBPF, which measures ZFS latency as a histogram on Linux. Tracing ZFS operation latency. Hit Ctrl C to end. Linux has been adding tracing technologies over the years kprobes kernel dynamic tracing, uprobes user level dynamic tracing, tracepoints static tracing, and perfevents profiling and hardware counters. The final piece was enhanced BPF aka e. BPF enhanced Berkeley Packet Filter, which provided the custom in kernel programmability needed for an advanced tracer, created by Alexei Starovoitov now at Facebook. Theres a front end for BPF, bcc BPF Compiler Collection, which has many single and multi purpose tools written by me and others. Check it out. Its currently much more difficult to write a bccBPF script than a DTrace script, but at least its now possible using Linux built ins, and one day there might be an easier front end. I have a page on e. BPF tracing, and the current bccBPF tools are There have been other tracing projects for Linux, and some companies found them useful for their needs, but the big problem was that they werent merged in mainline Linux. Now that e. BPF has been, many of these tracing projects may switch to using it as a backend since it is stable, or, they could further specialize in what they do non BPF related, eg, offline analysis of a capture file LTTng, sysdig. If youre on an older Linux kernel 3. My perf tools includes single purpose tools like opensnoop, execsnoop, iosnoop, and more, and multi purpose tools like funccount, kprobe, and uprobe. I intended perf tools as a hacky workaround until e. BPF was available, but ftrace has since been developed further hist triggers so perf tools may have a reason to continue. Zones. Id recommend this post about Zones vs Containers by Jessie Frazelle. On Linux, containers are a combination of namespaces restricting what a process sees and cgroups similar to Solaris resource controls. People rarely create them manually. They use third party software like Docker or Kubernetes to simplify their administration. I gave a talk about container performance recently at Docker. Con, and included a quick summary of how they work You. Tube, Slide. Share If you search of slideshare and youtube, youll find many other good talks on containers as well. Apart from Jessie, I also like talks by Jrme Petazzoni, and Tejun Heo. Linux containers have been in rapid development in the last few years. Sonicfire Sound Files.