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Dear Varnish-Team,<br>
<br>
while trying to optimize varnish performance for my company i've
noticed, that removing all comments from the vcls used in our
configuration tribles the requests per seconds from an easy ab test
with 100% cache-misses. On an ab test with 100% cache-hits the
improvement was about 8-10%. I was a little bit shocked, because
i've read that the vcls are compiled to c and execution shouldn't
depend on the amount of comments.<br>
<br>
I took a deeper look and found out, that the compiler appends a char
array of the vcl source (srcbody) to the VCL_conf. Which operations
need this data?<br>
<br>
If these operations are not crucial for an production environment
(e.g. if it's just used for tracing and source output with -C),
could you please add an option to prevent the compiler to add such
additional information to the VCL_conf?<br>
These operations would have to be reviewed, so they still work with
this option activated (if with less verbosity because of the missing
data).<br>
I know it's very helpful to have such informations in an staging
environment, but i wouldn't use tracing in production and so i might
not need this extra data there. The performance gain on the other
hand could be noticeable.<br>
<br>
I might get a performance boost with the recent version of varnish
already by just minifying the vcl's in the deployment, but there
still would be a lot of data left in the VCL_conf, that may not be
needed imo.<br>
<br>
I hope you can shed some light on this matter.<br>
<br>
Regards<br>
Gordon<br>
<br>
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<p> <b>Gordon Schmidt</b><br>
Softwareentwickler - QA </p>
<p> Unister GmbH<br>
Barfußgässchen 11 | 04109 Leipzig </p>
<p> Telefon: +49 (0)341 65050 - 25757<br>
<a href="mailto:gordon.schmidt@unister.de">gordon.schmidt@unister.de</a><br>
<a href="http://www.unister.de">www.unister.de</a> </p>
<p> Vertretungsberechtigter Geschäftsführer: Thomas Wagner<br>
Amtsgericht Leipzig, HRB: 19056 </p>
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