Benchmark: timing 5 iterations of ATerm, ETerm, GnomeTerminal, KDEKonsole, MRXVT, URXVT, WTerm, XFCETerminal, XTerm...
        ATerm: 10 wallclock secs ( 0.00 usr  0.00 sys +  3.91 cusr  1.47 csys =  5.38 CPU)
        ETerm: 45 wallclock secs ( 0.00 usr  0.00 sys + 20.91 cusr  4.79 csys = 25.70 CPU)
GnomeTerminal:  5 wallclock secs ( 0.00 usr  0.00 sys +  2.60 cusr  1.38 csys =  3.98 CPU)
   KDEKonsole:  9 wallclock secs ( 0.00 usr  0.00 sys +  6.67 cusr  1.71 csys =  8.38 CPU)
        MRXVT:  5 wallclock secs ( 0.00 usr  0.01 sys +  1.42 cusr  1.39 csys =  2.82 CPU) @ 500.00/s (n=5)
        URXVT: 81 wallclock secs ( 0.00 usr  0.00 sys + 60.68 cusr  3.15 csys = 63.83 CPU)
        WTerm:  8 wallclock secs ( 0.00 usr  0.01 sys +  2.04 cusr  1.26 csys =  3.31 CPU) @ 500.00/s (n=5)
 XFCETerminal:  4 wallclock secs ( 0.00 usr  0.00 sys +  2.82 cusr  0.95 csys =  3.77 CPU)
        XTerm: 90 wallclock secs ( 0.00 usr  0.00 sys + 62.70 cusr  8.41 csys = 71.11 CPU)

              s/iter XTerm URXVT ETerm KDEKonsole ATerm GnomeTerminal XFCETerminal WTerm MRXVT
XTerm           14.2    --  -10%  -64%       -88%  -92%          -94%         -95%  -95%  -96%
URXVT           12.8   11%    --  -60%       -87%  -92%          -94%         -94%  -95%  -96%
ETerm           5.14  177%  148%    --       -67%  -79%          -85%         -85%  -87%  -89%
KDEKonsole      1.68  749%  662%  207%         --  -36%          -53%         -55%  -61%  -66%
ATerm           1.08 1222% 1086%  378%        56%    --          -26%         -30%  -38%  -48%
GnomeTerminal  0.796 1687% 1504%  546%       111%   35%            --          -5%  -17%  -29%
XFCETerminal   0.754 1786% 1593%  582%       122%   43%            6%           --  -12%  -25%
WTerm          0.662 2048% 1828%  676%       153%   63%           20%          14%    --  -15%
MRXVT          0.564 2422% 2163%  811%       197%   91%           41%          34%   17%    --