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From: | Dmitry Gutov |
Subject: | bug#28695: 26.0.60; Rendering lag spikes caused by double-buffering on Linux |
Date: | Fri, 27 Oct 2017 02:19:28 +0300 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:56.0) Gecko/20100101 Thunderbird/56.0 |
On 10/16/17 5:30 AM, Eli Zaretskii wrote:
Children Self Comma Shared Object Symbol 0,03% 0,03% emacs libXext.so.6.4.0 [.] XdbeSwapBuffers 0,00% 0,00% emacs emacs [.] XdbeSwapBuffers@pltHmm... so do you see any difference between these 2 scenarios in other parts of the profiles?
It's really hard for me to tell. Now, I've re-ran the experiment again (last time I did it with ag, now with rg) and I'm attaching the "unexpanded" views of the graphs in all cases. 1 and 11 were with a small window, and 2 and 22 were with a fullscreen one.
The search results for XdbeSwapBuffers were really similar to the above, so I'm not including that.
Don't really see a significant difference. If I had to guess, the slowdown maybe has to do with Xorg not being able to keep up, but, like, in an asynchronous fashion.
perf.txt.1
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perf.txt.2
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perf.txt.11
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perf.txt.22
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