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Since Varnish did not work out on Solaris yet again. I have decided to bite the bullet and write a headers normalization patch for Squid 2.7. This patch should produce much better cache hit rates with Squid. Efficiency++ What the patch does: 1. Removes Cache-Control request headers, don’t let clients by-pass cache if it is […]

Once again I have been blind sided by yet another conservative out-of-the-box setting. IPFilter is tuned way too conservative with it’s state table size. Here is how you can tell if your hitting any issues, run ipfstat and check for lost packets. victori@opensolaris:~# ipfstat | grep lost fragment state(in): kept 0 lost 0 not fragmented […]

One of our articles on fabulously40 went viral on the tagged.com which is one of the largest social networks in the alexa top 100. The viral aspect was quite apparent when the bandwidth sky rocketed to 30Mb/sec of sustained traffic. We were pushing over 60gigs of image data per day! We broke our bandwidth quota […]

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I have finally nailed out all our issues surrounding Varnish on Solaris, thanks to the help of sky from #varnish. Apparently Varnish uses a wrapper around connect() to drop stale connections to avoid thread pileups if the back-end ever dies. Setting connect_timeout to 0 will force Varnish to use connect() directly. This should eliminate all […]