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[2719.66 --> 2720.54] It's got the
[2720.54 --> 2721.14] Go Tracer
[2721.14 --> 2722.64] in it and
[2722.64 --> 2723.32] he walks you
[2723.32 --> 2723.64] through how
[2723.64 --> 2724.38] to use it
[2724.38 --> 2725.60] from start
[2725.60 --> 2726.44] to finish and
[2726.44 --> 2727.36] it's awesome.
[2727.60 --> 2728.00] I love the
[2728.00 --> 2728.66] Go Tracer so
[2728.66 --> 2729.66] much but
[2729.66 --> 2731.30] it's severely
[2731.30 --> 2732.38] lacking in
[2732.38 --> 2733.00] documentation.
[2734.02 --> 2734.64] Severely
[2734.64 --> 2735.20] lacking.
[2735.30 --> 2735.82] Tell us what
[2735.82 --> 2736.50] the Go Tracer
[2736.50 --> 2736.94] does.
[2737.70 --> 2738.38] I actually
[2738.38 --> 2739.04] looked to see
[2739.04 --> 2739.70] if that was
[2739.70 --> 2740.54] explained anywhere
[2740.54 --> 2741.46] and it really
[2741.46 --> 2741.92] isn't.
[2742.44 --> 2742.96] It isn't.
[2743.02 --> 2743.48] Go Tracer
[2743.48 --> 2745.08] allows you to
[2745.08 --> 2746.60] instrument your
[2746.60 --> 2748.00] Go applications
[2748.00 --> 2749.44] and capture
[2749.44 --> 2753.42] performance metrics
[2753.42 --> 2754.84] that you can
[2754.84 --> 2755.80] then put
[2755.80 --> 2756.46] through
[2756.46 --> 2757.86] different
[2757.86 --> 2758.76] tracing tools.
[2759.26 --> 2759.66] Go Tracer
[2759.66 --> 2760.62] is one of
[2760.62 --> 2760.86] them.
[2762.32 --> 2762.88] And it
[2762.88 --> 2763.60] lets you
[2763.60 --> 2764.10] see,
[2764.46 --> 2765.10] for example,
[2766.26 --> 2767.12] what you're
[2767.12 --> 2767.64] spending most
[2767.64 --> 2768.20] of your CPU
[2768.20 --> 2769.18] time on or
[2769.18 --> 2769.76] where you're
[2769.76 --> 2770.40] allocating the
[2770.40 --> 2771.02] most memory.
[2772.14 --> 2772.82] The better
[2772.82 --> 2773.32] tools are
[2773.32 --> 2774.02] visual and
[2774.02 --> 2775.08] you can click
[2775.08 --> 2775.64] on things
[2775.64 --> 2776.08] and find
[2776.08 --> 2776.46] out,
[2776.54 --> 2777.48] you know,
[2777.56 --> 2778.52] because the
[2778.52 --> 2778.94] graph is
[2778.94 --> 2779.30] bigger,
[2779.86 --> 2780.46] this is where
[2780.46 --> 2780.94] I'm spending
[2780.94 --> 2781.48] more of my
[2781.48 --> 2781.88] time and
[2781.88 --> 2782.36] you can drill
[2782.36 --> 2783.34] in and get
[2783.34 --> 2783.72] all the way
[2783.72 --> 2784.18] down to the
[2784.18 --> 2784.90] function level.
[2785.44 --> 2785.60] All right,
[2785.66 --> 2786.40] this code
[2786.40 --> 2787.30] takes more
[2787.30 --> 2787.68] time than
[2787.68 --> 2788.34] anything else
[2788.34 --> 2789.26] or I'm
[2789.26 --> 2789.74] calling this
[2789.74 --> 2790.44] one function
[2790.44 --> 2791.32] so many
[2791.32 --> 2791.90] times that
[2791.90 --> 2792.38] it's taking
[2792.38 --> 2792.90] all of my
[2792.90 --> 2793.64] CPU time.
[2793.80 --> 2794.06] So you
[2794.06 --> 2794.90] can drill
[2794.90 --> 2795.44] into your
[2795.44 --> 2796.00] app and
[2796.00 --> 2797.34] find performance
[2797.34 --> 2798.08] issues that
[2798.08 --> 2798.36] way.
[2799.36 --> 2799.72] Cool.
[2799.72 --> 2801.22] So it's
[2801.22 --> 2802.24] a good
[2802.24 --> 2802.54] video.
[2802.72 --> 2803.70] Go watch
[2803.70 --> 2803.86] that.
[2804.46 --> 2804.90] I do
[2804.90 --> 2805.56] have one