Messages in this thread | | | Date | Fri, 23 Sep 2005 22:42:16 +0400 | From | Alexey Dobriyan <> | Subject | Re: tty update speed regression (was: 2.6.14-rc2-mm1) |
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On Fri, Sep 23, 2005 at 10:12:11AM -0700, Nish Aravamudan wrote: > I did not see any tty refresh problems on my TP with HZ=250 under > 2.6.14-rc2-mm1 (excuse the typo in my previous response) under the > adom binary you sent me. I even played two games just to make sure ;)
The slowdown is HZ dependent: * HZ=1000 - game is playable. If I would not know slowdown is there I wouldn't notice it. * HZ=100 - messages at the top are printed r e a l l y s l o w. * HZ=250 - somewhere in the middle.
> Is there any chance you can do an strace of the process while it is > slow to redraw your screen?
Typical pattern is:
rt_sigaction(SIGTSTP, {SIG_IGN}, {0xb7f1e578, [], SA_RESTART}, 8) = 0 poll([{fd=0, events=POLLIN}], 1, 0) = 0 poll([{fd=0, events=POLLIN}], 1, 0) = 0 write(1, "\33[11;18H\33[37m\33[40m[g] Gnome\r\33[12"..., 58) = 58 rt_sigaction(SIGTSTP, {0xb7f1e578, [], SA_RESTART}, NULL, 8) = 0 rt_sigaction(SIGTSTP, {SIG_IGN}, {0xb7f1e578, [], SA_RESTART}, 8) = 0 poll([{fd=0, events=POLLIN}], 1, 0) = 0 poll([{fd=0, events=POLLIN}], 1, 0) = 0 write(1, "\33[12;18H\33[37m\33[40m[h] Hurthling\r"..., 62) = 62 rt_sigaction(SIGTSTP, {0xb7f1e578, [], SA_RESTART}, NULL, 8) = 0 rt_sigaction(SIGTSTP, {SIG_IGN}, {0xb7f1e578, [], SA_RESTART}, 8) = 0 poll([{fd=0, events=POLLIN}], 1, 0) = 0 poll([{fd=0, events=POLLIN}], 1, 0) = 0 write(1, "\33[13;18H\33[37m\33[40m[i] Orc\r\33[14d\33"..., 56) = 56 rt_sigaction(SIGTSTP, {0xb7f1e578, [], SA_RESTART}, NULL, 8) = 0 rt_sigaction(SIGTSTP, {SIG_IGN}, {0xb7f1e578, [], SA_RESTART}, 8) = 0
I can send full strace log if needed.
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