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In varnishhist the x-axis shows the time varnish took between getting the request from the kernel and sending it back to kernel.

The y-axis shows the number of requests.

| => cache hit
# => cache miss

That is what I understood from the manpage. Correct me if I'm wrong.

Yet there is one thing I'm unsure about. The pipes (|) on the far left side, do they also stand for cache hits or are they just there to print the y-axis? I'm voting for the latter, but would like to be sure.

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2 Answers 2

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I don't have a vertical stack of pipes in the leftmost column.

My display is like so:

1:50, n = 2000


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               |||           ##                   #
+--------+--------+--------+--------+--------+--------+--------+--------+--------
|1e-6    |1e-5    |1e-4    |1e-3    |1e-2    |1e-1    |1e0     |1e1     |1e2

(Varnish 2.1.3 BTW)

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  • I do have a lot of pipes right above the plus sign next to 1e-6. If you don't have them they seem to be some requests. Strange.
    – pst
    Jan 11, 2011 at 12:13
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Even more useful details about how to read 'varnishhist' output can be found in answered question How to Read a Varnish Histogram.

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