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E aqui está a razao pq nao se usa sistemas windows em ambientes criticos :)

Discussão em 'Novidades GNU/Linux & *nix World' iniciada por xupetas, 9 de Setembro de 2008. (Respostas: 96; Visualizações: 8744)

  1. xupetas

    xupetas Banido

    London Stock Exchange crippled by system outage:

    LONDON (Reuters) - The London Stock Exchange (LSE.L: Quote, Profile, Research, Stock Buzz) suffered its worst systems failure in eight years on Monday, forcing the world's third largest share market to suspend trading for about seven hours and infuriating its users.

    The problem occurred on what could have been one of London's busiest trading days of the year, as markets rebounded worldwide following the U.S. government's decision to bail out mortgage companies Fannie Mae (FNM.N: Quote, Profile, Research, Stock Buzz) and Freddie Mac (FRE.N: Quote, Profile, Research, Stock Buzz).

    "We have the biggest takeover in the history of the known world ... and then we can't trade. It's terrible," one trader said.

    The Johannesburg Stock Exchange, which uses the LSE's trading platform TradElect, also suspended trading.

    "This halt today clearly has once again damaged (the LSE's) reputation as a leading exchange, especially on a day like today, highlighting that it may have been unable to handle the volumes this morning," added another trader.

    The exchange would not say whether volume was the issue and declined to give details on what had caused the problem. But angry customers were demanding an explanation.

    "We want answers as to how this happened in the first place and reassurances that it will not happened again," said Angus Rigby, chief executive of brokerage TD Waterhouse.

    The LSE, the world number-three exchange by traded volume in the first half of this year, opened for trading as usual at 0700 GMT, but connectivity problems left some brokers unable to trade. It was then forced to suspend trading to ensure some market players were not disadvantaged.

    The Exchange finally got trading going at 1500 GMT -- half an hour before it was due to close.

    "We had to sit on our hands and wait for fragmented and at times ambiguous announcements as to when the LSE would be up and running ... It's ironic that since 2:30 today we've been able to trade, and get a fair market value on Barclays or any other ADR (American depository receipt) on the New York Exchange, but not on the LSE," said Rigby.

    The UK Financial Services Authority, in its Financial Risk Outlook 2008 report, says the risk of such infrastructure failures is growing with the rise of electronic trading and straight-through processing.


    The LSE plans a series of system upgrades and is migrating Italian equities to its trading platform TradElect this month.

    Monday's trading suspension was the longest suffered by the exchange since April 5, 2000, when problems with an older trading system led to an eight-hour suspension.

    On June 17, the Milan Stock Exchange, which the LSE acquired in October 2007, suspended trading due to technical difficulties. On November 7 last year the LSE itself experienced a connectivity problem with its real-time market data system Infolect which connects to TradElect.

    The outrage came at an embarrassing time as the LSE fights new entrants. In a letter to the Financial Times on Monday LSE Chief Executive Clara Furse defended the exchange's position, describing TradElect, which the bourse introduced last year, as "the cutting edge".

    Nasdaq OMX Europe, a cash equity platform set up by transatlantic exchange group Nasdaq OMX (NDAQ.O: Quote, Profile, Research, Stock Buzz) to rival European bourses such as LSE and Deutsche Boerse (DB1Gn.DE: Quote, Profile, Research, Stock Buzz), will start on September 26. NYSE Euronext (NYX.N: Quote, Profile, Research, Stock Buzz)(NYX.PA: Quote, Profile, Research, Stock Buzz) said it will launch a pan-European market in November
    The LSE faces growing competition from new entrants and its share price has fallen sharply as a result this year.

    Turquoise, a cash equities trading venue backed by nine investment banks, as well as Chi-X Europe, owned by Nomura (8604.T: Quote, Profile, Research, Stock Buzz) and investment banks, are both gaining market share. Both said on Monday they were trading normally.

    The LSE outage coincided with a system failure at the Intercontinental Exchange (ICE.N: Quote, Profile, Research, Stock Buzz) (ICE), which shut trade across London commodity markets for more than an hour. According to an ICE official there was no apparent link between the two.

    (Additional reporting by Simon Falush and David Sheppard; Editing by Andrew Callus and David Holmes)

    Já agora o LSE TradElecté:

    LSE TradElect system goes live

    18 June 2007

    TradElect, the London Stock Exchange's new electronic trading system, has gone live.

    The new technology platform has been developed using the Microsoft .NET Framework, with support from Microsoft and Accenture, and marks the final phase of the Exchange's four-year Technology Road Map project. TradElect enables significant increases in both speed of trading and system capacity.

    "The introduction of TradElect, the culmination of a four year investment in next generation technology, will deliver a step change in trading capabilities to the London market," said David Lester, chief information officer at the Exchange. "As high-frequency algorithmic traders look globally for pools of liquidity in which to find alpha opportunities, TradElect sets new benchmarks in terms of system capacity and performance."

    The exchange made the strategic decision to replace its technology rather than adapt existing, outdated technology. Customers have had access to test environments for the past nine months, and the past two months have seen three market weekend dress rehearsals to prepare market systems for cutover.

    TradElect enables the market to execute trades fully and resiliently in around ten milliseconds. This builds on the performance of the Exchange's information dissemination platform, Infolect, which was launched in October 2005 and provides the market with a full-depth view of company prices within two milliseconds. These levels of performance should drive further increases in trading volume and allow new market strategies to be applied in London.

    TradElect also increases the Exchange's capacity, initially fivefold, to enable significant trading growth. TradElect's capacity would be sufficient to handle the current trading transactions for all European equities, and the system enables the Exchange to further double capacity on demand, at less than one fifth of previous costs.

    The new platform has been designed to the highest levels of resilience with comprehensive back up, which includes dual processing at two sites and recovery from component failure within a second.

    "TradElect's launch underlines the Exchange's commitment to invest continuously to improve market efficiency for the benefit of all traders, investors and listed companies. Together with a long-standing reputation for full transparency of information, strong regulation and progressive fee reductions, the London markets are underscoring their leading global position," said Lester.

    Ps: se reparem nem aquilo a correr em cluster os salvou :lol:
  2. slack_guy

    slack_guy Power Member

    Pelos vistos, para a 'tecnologia da próxima geração' 1 segundo são 7 horas :-)

    No entanto, repara que esteve a funcionar bem(?) durante 18 meses! O que, tendo em conta o que é, não me parece nada mau.
    Última edição: 9 de Setembro de 2008
  3. ruimoura

    ruimoura Power Member

    Esses case studys encomendados pela própria Microsoft são um belo de um delírio :-)
  4. oscarolim

    oscarolim Power Member

    Lendo a noticia, o problema foi o sistema de compra e venda, e nao o sistema operativo. Podia correr em spectrum, que o que deu barraca foi o sistema que controla a compra e venda.
  5. O sistema de compra e venda é muito provavelmente SQL based, sendo por sua vez as bases SQL inteiramente dependentes do sistema operativo numa implementação deste calibre.

    Nada contra os SO Microsoft ou qualquer outro SO, apenas a favor dos factos. ;)
  6. flsantos

    flsantos Power Member

    <offtopic mode on>
    @esquiso, realmente ao ler este post lembrei-me desse anuncio.
    Também li qualquer coisa sobre o BSofD no último ensaio dos Jogos Olímpicos, mas não me apercebi se foi gozo ou verdade.
    <offtopic mode off>
    Independentemente de ter estado a funcionar bem durante 18 meses, numa altura crucial para a bolsa falhou.
  7. Arnie_Marta

    Arnie_Marta I quit My Job for Folding

    Não me parece que falhou devido ao windows, mas ok...

    Quanto á pic mostrada parece claramente fake.
  8. oscarolim

    oscarolim Power Member

    A serio? A aplicacao nao tem peso nenhum no resultado? De certeza? Ja vi muitas aplicacoes feitas, que dava barraca em base de dados, mas a culpa nao era do motor SGBD mas sim da aplicacao. Provavelmente a mesma aplicacao com uma interface mySQL teria o mesmo resultado.
  9. esquiso

    esquiso Power Member

    É tão fake como esta, esta ou mesmo esta. E antes que digas que é "fake", aconselho-te a ver os URLs. Aquela simplesmente não está hostada no site da microsoft :) Mas uma imagem semelhante àquela é esta.

    Ah, cá esta a imagem original no site da MS. Ainda é fake? :)

    Mais sobre este assunto:

    Última edição: 9 de Setembro de 2008
  10. xupetas

    xupetas Banido

    pensamento subliminar... as maquinas criticas da tvc estão TODAS em hpux, linux, solaris :)

    Seja de billing, mediation, sap, etc :)
  11. RicardoMoreira

    RicardoMoreira Power Member

    Mas onde é que a noticia diz que a culpa é do sistema operativo? :confused:
  12. TuxBoss

    TuxBoss Power Member

    Uma coisa destas tem de ter no mínimo uma disponibilidade de 99,999%, isto é um desastre...

    Realmente pode ser que abram a pestana e comecem a meter SO's a sério em sistemas críticos.
  13. oscarolim

    oscarolim Power Member

    O que esta nas noticias e que foi um problema de comunicacao, de rede. Pode muito bem ter sido ou do outro lado, ou hardware. Agora expliquem-me o que e que o so tem a haver com isto? Em linux o hardware nunca avaria? Entao eu devo ter azar, o ubuntu ja me lixou umas memorias e uma placa de rede. Maldito linux. Nao presta...
  14. esquiso

    esquiso Power Member

    Here we go again. :)

    O que está nas noticias é que foi uma "software fault", dito pela porta voz do LSE. Podes ver isso no link da BBC.
    Ninguém na LSE abre o jogo quanto às verdadeiras razões, por isso só podemos especular que seja alguém "grande" a querer que não se fale muito disto. E depois da campanha "Get the Facts" a vangloriar-se da fiabilidade do Windows na LSE, well..
  15. RicardoMoreira

    RicardoMoreira Power Member

    Por ser erro de software o que garante que a culpa é o sistema operativo e não das aplicações que eles usam?
  16. Rexobias

    Rexobias Power Member

    Eu por acaso na semana passada tive imensos problemas com a inscrição online para o 2º ano na Universidade de Aveiro. Disseram-me que era problema com o Sistema Informático e eu não era caso único. O SI da UA não é Windows/Microsoft (que eu saiba) ... e a verdade é que quase estragou-me uma viagem.

    Cada um usa aquilo que prefere e que responde da melhor forma ás suas necessidades.
    Última edição: 9 de Setembro de 2008
  17. esquiso

    esquiso Power Member

    Provavelmente o mesmo que te garante que a culpa não é do SO. Palpites :)
  18. RicardoMoreira

    RicardoMoreira Power Member

    Mas eu não mandei palpite nenhum, apenas questionei o que vos leva a dizer que a culpa é do sistema operativo e não da aplicação em si. Ou até como alguém já referiu, do hardware.

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