I’ve tested every tweak I know and listed them with the results
Server Specs: VPS w/512mb 2xcore
Cscart Basic Skin
Fresh
Page Speed Grade:(73%)
YSlow Grade:(68%)
Page load time: 7.96s
Total page size: 547KB
Total number of requests: 81
Smart Optimiser installed
Page Speed Grade:(78%)
YSlow Grade:(84%)
Page load time: 6.61s
Total page size: 199KB
Total number of requests: 53
mod_deflate
Page Speed Grade:(77%)
YSlow Grade:(75%)
Page load time: 8.00s
Total page size: 196KB
Total number of requests: 81
‘js_compression’ => true
Page Speed Grade:(73%)
YSlow Grade:(68%)
Page load time: 8.05s
Total page size: 503KB
Total number of requests: 81
‘check_templates’ => false
Page Speed Grade:(73%)
YSlow Grade:(68%)
Page load time: 8.04s
Total page size: 547KB
Total number of requests: 81
‘join_css’ => true
Page Speed Grade:(74%)
YSlow Grade:(68%)
Page load time: 7.78s
Total page size: 551KB
Total number of requests: 73
Cache = sqlite
Page Speed Grade:(73%)
YSlow Grade:(68%)
Page load time: 8.04s
Total page size: 547KB
Total number of requests: 81
mod-pagespeed
Page Speed Grade:(82%)
YSlow Grade:(76%)
Page load time: 7.08s
Total page size: 219KB
Total number of requests: 58
[size=“6”]Everything BUT mod-pagespeed[/size]
Page Speed Grade:(79%)
YSlow Grade:(86%)
Page load time: 5.87s
Total page size: 199KB
Total number of requests: 45
[size=“6”]Everything enabled inc mod-pagespeed[/size]
Page Speed Grade:(82%)
YSlow Grade:(87%)
Page load time: 4.77s
Total page size: 193KB
Total number of requests: 28