Op woensdag 25 april 2018 16:54:59 CEST schreef Alan Cox: > > > I think memory allocation and io waits can't be decoupled from > > > scheduling as they are now. > > > > The scheduler is not decoupled from either, it is intimately involved > > in both. However, none of the decision making smarts for either reside > > in the scheduler, nor should they. > > It belongs in both. > > Classical Unix systems never had this problem because they respond to > thrashing by ensuring that all processes consumed CPU and made some > progress. Linux handles it by thrashing itself to dealth while BSD always > handled it by moving from paging more towards swapping and behaving like > a swap bound batch machine. > > Linux thrashes itself to death, the classic BSD algorithn instead throws > fairness out of the window under extreme load to prevent it. It might take > a few seconds but at least you will get your prompt back. > > Alan > I haven t tried BSD.
But when I was young I allocated 10MB on a HP9000 (UX) with 1MB of RAM. People wanted to launch me out of the window (18th floor). I did not want to say Unix was better, only with so much emphasis on security I' m surprised how easy it is for a regular user to bring linux to on it s knees.
