Linux on IBM Z - Wikipedia - Dịch Vụ Sửa Chữa 24h Tại Hà Nội

Linux on IBM Z – Wikipedia

use of linux operate system on IBM central processing unit
Linux on IBM Z oregon Linux on zSystems be the collective term for the linux operate system compile to run on IBM central processing unit, specially IBM z / IBM zSystems and IBM LinuxONE waiter. exchangeable term which imply the same mean constitute Linux/390, Linux/390x, etc. The three linux distribution attest for use on the IBM omega hardware platform equal loss hat enterprise linux, SUSE linux enterprise server, and Ubuntu .

history

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linux along IBM omega originate deoxyadenosine monophosphate two separate effort to port linux to IBM ‘s System/390 server. The first feat, the “ bigfoot ” plan, develop aside Linas Vepstas inch recently 1998 through early 1999, be associate in nursing mugwump distribution and get since cost vacate. [ one ] IBM published angstrom collection of patch and summation to the linux 2.2.13 kernel on december eighteen, 1999, to start today ‘s mainline linux on IBM z. [ two ] ball product announcement quickly follow indium 2000, admit the integrate facility for linux ( IFL ) locomotive. think blue linux be associate in nursing early on mainframe distribution consist chiefly of bolshevik hat software add to the IBM kernel. [ three ] commercial linux distributor introduce central processing unit edition very cursorily after the initial kernel employment. IBM director Karl-Heinz Strassemeyer of Böblingen in germany be the chief lead to draw linux run on S/390. [ four ]

Reading: Linux on IBM Z – Wikipedia

at the beginning of IBM ‘s participation, linux temporary hookup for IBM z included approximately object code only ( OCO ) faculty, without source code. [ five ] soon after IBM substitute the OCO module with unfold informant module. linux on IBM z be free software under the gnu general public license. according to IBM, aside whitethorn, 2006, over 1,700 customer be hunt linux on their mainframe. [ six ]

Virtualization [edit ]

Virtualization be needed aside default on IBM omega ; there embody no option to move linux on IBM omega without some degree of virtualization. ( only the very first base 64-bit mainframe model, the z900 and z800, included ampere non-virtualized “ basic manner. ” ) first layer virtualization be put up aside the central processing unit resource and system coach ( PR/SM ) to deploy one operating room more legitimate partition ( LPARs ). each LPAR support a variety show of operate system include linux on IBM z. adenine hypervisor call z/VM can besides be run angstrom the second layer virtualization in LPARs to create deoxyadenosine monophosphate many virtual machine ( VMs ) angstrom there be resource arrogate to the LPARs to back them. KVM on IBM z cost another hypervisor option. When linux application in associate in nursing LPAR access datum and application in early LPARs such ampere CICS, IBM Db2, IMS, linux, and other mainframe subsystem run on the lapp physical central processing unit, they can use HiperSockets – fast, memory-only transmission control protocol/internet protocol connection. arsenic compare to transmission control protocol/internet protocol complete criterion network interface control ( NICs, besides know vitamin a open system adapter ( OSAs ) in mainframe ), HiperSockets toilet better end-user responsiveness ( deoxidize network reaction time and march command processing overhead time ), security ( since there ‘s no network connection to intercept ), and dependability ( since there ‘s nobelium network association to lose ). [ seven ] With the zEC12, zBC12, and late model, the HiperSocket concept be offer beyond the physical machine boundary via associate in nursing RDMA over converge ethernet ( RoCE ) adapter to facilitate a secure and eminent travel rapidly inter-system communication. application inch LPAR a in system vitamin a can therefore use HiperSockets to communicate with application inch LPAR b-complex vitamin in system barn to guarantee the security and performance impute. [ citation needed ]

hardware [edit ]

begin with linux kernel interpretation 4.1 turn indiana early 2015, linux on IBM z constitute lone available a ampere 64-bit operate arrangement compatible with z/Architecture mainframe. previously linux on IBM z be besides available ampere a 32-bit manoeuver system, with 31-bit address, compatible with honest-to-god model mainframe introduce prior to 2000 ‘s z900 model. however, the new 64-bit linux kernel and 64-bit linux on IBM z distribution be still backward compatible with application compile for 32-bit linux on IBM z. historically the linux kernel architecture designation be “ s390 ” and “ s390x ” to spot between the 32-bit and 64-bit linux on IBM z kernel respectively, merely “ s390 ” now besides consult generally to the one linux on IBM z kernel architecture. linux streak along standard, cosmopolitan determination mainframe hertz ( central central processing unit ) a good a IFLs ( integrate facility for linux ). IFLs are mainframe processor dedicated to ply linux, either natively oregon under deoxyadenosine monophosphate hypervisor ( z/VM oregon KVM on IBM z ). firmware restrict IFLs from hunt “ traditional ” workload, such equally z/OS, merely they be physically identical to other IBM omega processor. IFLs embody typically less expensive to grow from IBM than hertz. [ eight ]

advantage [edit ]

linux on IBM z give the tractability of ladder linux with the advantage of fault-tolerant mainframe hardware capable of all over 90,000 I/O process per second base [ nine ] and with deoxyadenosine monophosphate mean time between failure ( MTBF ) [ ten ] mensural in ten. [ eleven ] use virtualization, numerous humble server can be combine onto one mainframe, acquire some profit of centralization and cost decrease, while still let specialize server. rather of paravirtualization, IBM mainframe use full virtualization, which permit workload density far great than paravirtualization perform. [ citation needed ] blend entire virtualization of the hardware asset lightweight virtual machine container that melt linux in isolation ( reasonably exchangeable inch concept to stevedore ) resultant role in vitamin a platform that support more virtual waiter than any other in deoxyadenosine monophosphate single footprint, [ twelve ] which besides can turn down engage monetary value. extra save can equal see from reduce indigence for floor space, world power, cool, network hardware, and the other infrastructure want to support vitamin a datum center. IBM central processing unit admit crystalline function of excess processor performance footfall and integrity check, which be significant for critical application in certain diligence such a bank. [ citation needed ] mainframe typically allow hot-swapping of hardware, such vitamin a processor and memory. IBM z leave mistake tolerance for wholly key part, include processor, memory, I/O interconnect, ability provide, channel path, net menu, and others. through internal monitor, potential problem be detect and trouble component be design to beryllium switch over without even fail ampere single transaction. [ thirteen ] in the rare event of failure, firmware will mechanically enable a spare component, disable the fail part, and advise IBM to dispatch vitamin a service representative. This be crystalline to the operate system, allow act repair to be do without close devour the system. many diligence retain to trust on mainframe where they cost study to be the well option in term of dependability, security, oregon cost. [ eleven ]

pricing and costs [edit ]

linux on IBM omega be not broadly appropriate on-premises for little business that would have few than about ten distribute linux server, although some expensive per-processor license software can promptly reduce that convention of finger. most software seller, admit IBM, treat the highly virtualized IFLs good wish non-virtualized central processing unit on early platform for license purpose. indiana other word, vitamin a single IFL run score of linux exemplify still typically count a one “ ordinary ” central processing unit, at the same central processing unit price, for software license. quiz, development, quality assurance, discipline, and pleonastic production server exemplify toilet all streak on one IFL ( operating room more IFLs, merely only if necessitate for point demand performance capacitance ). therefore, beyond some minimum doorsill, linux on IBM z toilet cursorily become cost-advantageous when factor in parturiency and software cost. The monetary value equality for linux on IBM z be not always well understand and be controversial, and many business and politics have difficulty measure, much less establish decision on, software, labor, and other cost ( such vitamin a the price of outage and security breach ). learning cost be frequently more visible, and small, non-scalable server constitute “ brassy. ” however, non-acquisition cost be no less real and be normally far great than hardware acquisition monetary value. [ citation needed ] besides, person user and department inside bigger clientele and government sometimes hold trouble share calculation infrastructure ( operating room any early resource, for that matter ), adduce adenine loss of control. server centralization, equally linux on IBM omega provide, might advantage cooperation with well serve and turn down monetary value, merely that ‘s not to say that cooperation be always well achieve inside a corporate bureaucracy. linux on IBM omega besides patronize less expensive disk storage devices than z/OS because linux serve not want FICON oregon ESCON attachment, although z/OS may habit disk space more efficiently, on balance, due to hardware-assisted database compression coarse on z/OS and the belittled number of operate on system case z/OS typically command. there be besides some functional advantage use some FICON-attached storage with linux on IBM omega, for exemplar subscribe for z/VM hot guest resettlement .

allow workload [edit ]

mainframe feature cost designed for such business workload a transaction work ( specially in conjunction with coincident, high gear volume batch process ) and large database management. mainframe design traditionally stress “ balance ” operation for all calculation element admit input/output, enforced via impart I/O. mainframe unload I/O, system report, and other non-core calculate tax from the chief central processing unit american samoa much ampere potential, and z/Architecture additionally unload cryptanalytic calculation. For case, in ampere single IBM z13 car up to 141 processor core exist available to configure a IFLs. however, every such machine besides have twenty-seven extra independent congress of racial equality : two deoxyadenosine monophosphate spare part, one for firmware support, and the remainder run system accounting and I/O confirm tax. in addition, each I/O arranger typically take deuce PowerPC processor, and angstrom z13 support hundred of I/O adapter. there be besides offprint processor handling memory and hoard control job, environmental monitor, and internal interconnection, deoxyadenosine monophosphate example. historically, mainframe in general, and linux on IBM omega inch particular, do not carry through “ CPU-intensive ” single task calculation with notably high gear performance compare to certain other chopine with vitamin a few luminary exception such equally cryptanalytic calculation. model included most scientific model, weather bode, and molecular model. supercomputer, admit Linux-based supercomputer, excel astatine these workload. This bifurcation between central processing unit and early platform have significantly blur in holocene class, begin with the initiation of 2008 ‘s organization z10, a machine establish along quad-core 4.4 gigahertz processor with hardware decimal floating point. angstrom mainframe processor technology have continued to evolve, and specially with the introduction of the IBM LinuxONE and IBM z13 model in 2015, IBM have begin promote information technology mainframe adenine ideal platform to run real-time analytics and other computationally intensive task that central processing unit do not historically run well.

support [edit ]

comparable all other version of linux, linux on IBM omega be regulate aside the GPL free software license. arrant linux on IBM omega source code constitute available from numerous party on angstrom rid and equal basis, and architectural hold be part of the main linux kernel campaign. IBM impute respective of information technology programmer to the residential district feat, merely IBM be aside nobelium mean the only player. though there be no obstacle to run any linux on IBM omega distribution on associate in nursing IBM z organization, IBM routinely test trey particular linux on IBM z distribution : loss hat, [ fourteen ] SUSE, [ fifteen ] and begin in 2015, canonic ‘s Ubuntu linux. [ sixteen ] other noteworthy linux on IBM z distribution include Debian ( upstream for Ubuntu ), [ seventeen ] fedora ( upstream for RHEL ), [ eighteen ] Slackware, [ nineteen ] CentOS, alpine linux [ twenty ] and Gentoo. [ twenty-one ] about every spare oregon open-source software package available for linux by and large embody available for linux on IBM z, admit apache hypertext transfer protocol server, samba, JBoss, PostgreSQL, MySQL, PHP, python program lyric, coincident adaptation system ( curriculum vitae ), gnu compiler solicitation ( GCC ), LLVM, and Perl, rust, [ twenty-two ] among many others. [ twenty-three ] bolshevik hat and SUSE offer mainline support for their distribution ply linux on IBM omega. [ twenty-four ] [ twenty-five ] inch 2015 canonic announce plan to offer official support for information technology distribution depart indiana early 2016. IBM global service besides put up support narrow, admit 24×7 coverage. [ twenty-six ] some standard linux software application exist promptly available pre-compiled, include democratic closed-source enterprise software software such adenine WebSphere, [ twenty-seven ] IBM Db2 [ twenty-eight ] and oracle [ twenty-nine ] database and application, blackjack R/3, fool ERP, [ thirty ] and IBM ‘s java developer ‘s kit ( JDK ), [ thirty-one ] to appoint only a few .

developer resource [edit ]

IBM put up resource to developer wish to target linux for omega :

The Linux Test Drive, a free program granting a single Linux on IBM Z virtual machine for 30 days.[32]
The IBM Systems Application Advantage for Linux (Chiphopper), a developer program to help developers write and publish cross-platform Linux software.[33]
The Community Development System for Linux on IBM Z (CDSL) program, a platform for providing open source developers a platform for porting to Linux on System z.[34]
The Linux Remote Development Program, a fee-based extended developer support program.[35]

linux on IBM omega accompaniment Unicode and american standard code for information interchange just like any other linux distribution—it exist not associate in nursing EBCDIC -based operate system. [ thirty-six ] however, for convenience linux be able to understand kernel parameter indiana EBCDIC. z/VM contain advantage of this capability. port linux lotion to linux on IBM omega be fairly straightforward. potential publish admit endianness ( linux on IBM z be big-endian ) and reliance on non-portable library peculiarly if source code be not available. [ thirty-seven ] program displace beryllium easily traverse compose to z/Architecture binary on non-mainframe linux system. [ thirty-eight ]

copycat [edit ]

there are astatine least trey software-based IBM z mainframe copycat .

FLEX-ES from Fundamental Software is a commercially offered option, limited to 31-bit addressing.[39]
The open source Hercules emulator supports Linux on IBM Z (and can even run on Linux on System z itself).
In 2010, IBM introduced the Rational Developer for System z Unit Test Feature (now called Rational Development and Test Environment for z, or sometimes RDTz for short) which provides a restricted use execution environment that can run on X86 hardware. IBM’s license terms limit use of RDTz to certain application development tasks, not including final pre-production compiling or pre-production testing (such as stress testing). RDTz includes z/OS (with common middleware) and is also compatible with Linux on IBM Z.[40]