[ tl;dr: master starts sending bytes quicker than 3.0. ] Hello all.
I've been running some benchmarks to see how master stands up to the earlier version. One of the metrics are time-to-first-byte, which I've got (preliminary) results for now. First something to compare with; Apache (worker mpm) from ubuntu 12.04: localhost:80 (2013-09-23 15:42:43.971109 on fryer1) -------------------------------------------------- mean: 508.937μs (stdev 0.000030301) median: 505.162μs mean: 492.875μs (stdev 0.000028883) median: 492.782μs mean: 513.742μs (stdev 0.000026687) median: 514.409μs mean: 512.047μs (stdev 0.000032193) median: 510.670μs mean: 510.367μs (stdev 0.000031974) median: 510.384μs Numbers for current 3.0 branch: (0a7e6ca) localhost:6081 (2013-09-23 15:30:58.719143 on fryer1) -------------------------------------------------- mean: 317.403μs (stdev 0.000032792) median: 320.449μs mean: 262.953μs (stdev 0.000037567) median: 243.901μs mean: 339.497μs (stdev 0.000031443) median: 344.593μs mean: 344.804μs (stdev 0.000005411) median: 342.978μs mean: 320.578μs (stdev 0.000032696) median: 326.909μs and finally for current master: (988cd77) localhost:6081 (2013-09-23 15:44:48.687103 on fryer1) -------------------------------------------------- mean: 234.249μs (stdev 0.000013593) median: 225.852μs mean: 272.104μs (stdev 0.000049566) median: 263.452μs mean: 234.516μs (stdev 0.000033360) median: 226.136μs mean: 287.847μs (stdev 0.000050505) median: 285.355μs mean: 243.210μs (stdev 0.000048766) median: 226.050μs Method is a single connect/GET/read(1) loop, 5 runs of 100 connections with 2s sleep between. One warmup run before measurements are done. The object fetched was 177 bytes. Software used is up on github, if anyone feels like replicating the results or improving the benchmark: https://github.com/lkarsten/httpttfb -- With regards, Lasse Karstensen Varnish Software AS _______________________________________________ varnish-dev mailing list [email protected] https://www.varnish-cache.org/lists/mailman/listinfo/varnish-dev
