Messages in this thread | | | Date | Tue, 21 Mar 2006 15:52:02 +0100 | From | Ingo Molnar <> | Subject | Re: interactive task starvation |
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* Willy Tarreau <willy@w.ods.org> wrote:
> Ah no, I never use those montruous environments ! xterm is already > heavy. [...]
[ offtopic note: gnome-terminal developers claim some massive speedups in Gnome 2.14, and my experiments on Fedora rawhide seem to corraborate that - gnome-term is now faster (for me) than xterm. ]
> [...] don't you remember, we found that doing "ls" in an xterm was > waking the xterm process for every single line, which in turn woke the > X server for a one-line scroll, while adding the "|cat" acted like a > buffer with batched scrolls. Newer xterms have been improved to > trigger jump scroll earlier and don't exhibit this behaviour even on > non-patched kernels. However, sshd still shows the same problem IMHO.
yeah. The "|cat" changes the workload, which gets rated by the scheduler differently. Such artifacts are inevitable once interactivity heuristics are strong enough to significantly distort the equal sharing of CPU time.
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