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On Thursday 15 May 2008, Abraham Gyorgy wrote: |
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> I know X runs always as root. But setting the X server process' |
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> priority to for example -10 makes graphical software response faster. |
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> It works for me!! (no matter the system hangs sometimes :). |
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> I think you have a fast machine, try it with a very slow computer |
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> (sempron processor and radeon xpress200m+fglrx). |
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Please don't top post in this forum. |
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Look, you are talking about running the X session as root. That doesn't |
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make sense as an "X session" is e.g. gnome or kde which runs as the |
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user. I fail to see how the X client programs have any effect on the |
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the responsiveness of the server, yet this is exactly what you are |
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saying. Then you talk about vulnerabilities in the client apps with an |
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implication that this can somehow affect the server which runs as root. |
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But that is just not true, except if a client can exploit a |
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vulnerability in the server (which is to my mind not what you are |
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saying). |
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Finally, there is very little point in debating this topic. If Linus |
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says that niceness has never had a whole lot of effect in Linux, and |
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that perceived differences are entirely due to reducing the latency a |
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specific app experiences, then I am going to go with the one guy that |
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knows the subject and consider your experiences to be anecdotal. |
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You'll probably get better results with X by selecting a suitable |
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process scheduler and configuring your HZ to 1000 |
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> 2008/5/14 Alan McKinnon <alan.mckinnon@×××××.com>: |
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> > On Wednesday 14 May 2008, Josh Cepek wrote: |
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> > > > lapitopi gyuszk # snice -15 X |
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> > > |
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> > > As already pointed out, running process with a nice value less |
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> > > than 0 can only be done by root, and it's usually a really bad |
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> > > idea to run your entire X session as root. X (and applications |
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> > > running under X) involve a lot of code, and vulnerabilities can |
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> > > exist in this code. |
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> > |
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> > I think you don't know how X runs. |
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> > |
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> > X *always* runs as root on Linux so whether you nice it to 19 or |
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> > -19 is not relevant. It was only very very recently that someone |
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> > got X to run as a user. Do you disagree or should I elaborate? |
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> > |
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> > -- |
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> > Alan McKinnon |
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> > alan dot mckinnon at gmail dot com |
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> > |
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> > -- |
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> > gentoo-user@l.g.o mailing list |
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-- |
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Alan McKinnon |
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alan dot mckinnon at gmail dot com |
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-- |
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gentoo-user@l.g.o mailing list |
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