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<\/span>When Is It Time to Think About Performance?<\/span><\/h2>\nI usually think about performance when I access a site that has a heavy page, but heavy is not a good measure since it leads to the doubt “how much heavy”.<\/span><\/p>\nI usually make the test performance with pages having sizes of around 5 MB. <\/span>If it loads slowly enough to make you avoid using it, it is time to consider thinking about performance.<\/span><\/p>\nAlthough time is a subjective measure, comparing by the average navigation time, it is good enough for me.<\/span><\/p>\nFixing a loading time may be an alternative for the sake of better precision. On the web, you may get many opinions.<\/span><\/p>\n<\/span>How do I measure a page size?<\/span><\/strong><\/span><\/h3>\nA simple method is to download the page using the browser’s “Save as..” option.<\/span>After the download, you check the size of the file of files downloaded.<\/span><\/p>\n <\/p>\n
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<\/span>The 4-factors Performance Issues (at least)<\/span><\/h2>\nMost of the time, when judging a site performance we first think about connection speed and techs behind it.<\/span>This approach leads to severe mistakes.<\/span><\/p>\nWe must go, at least, through all the 4-factors performance issues:<\/span><\/p>\n\nTechnology usage – the way things are done.<\/strong><\/span>Language: Java, JavaScript, Ruby, etc. and their frameworks.<\/span>Database: Oracle, MongoDB, etc. ; concurrency, locks; etc.<\/span>Project architecture \u2014 the way things are done, for instance too many layers, heavy objects running everywhere, memory consumption, memory swap, etc.<\/span>Software update \u2014 Do you have the last versions?Connection speed, throughput, concurrency, protocol, etc.Data traffic generation \u2014 The way the content is handled.Client’s and Servers’ Hardware.<\/strong><\/span>How much memory do have a client and the server on the two sides of the connection?<\/span>Their CPU architecture like speed, cache channels, parallelism, bus, etc.<\/span>An easy way to check all this is making the following question:<\/span>How old is the hardware? <\/p>\n