the use of mmap in Varnish is great, but be careful when the hot file set is larger than available RAM http://www.bbc.co.uk/blogs/internet/entries/17d22fb8-cea2-49d5-be14-86e7a1dcde04 …pic.twitter.com/CIvO2as0f0
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In the article you just posted, the system is doing almost nothing but reading files sequentially.
but the issue with varnish here is too many files, not how they were read
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