We now compare the performance of the Harvest cache against the CERN proxy-http cache [15] and evaluate the Harvest cache's httpd-accelerator's performance gain over the Netscape Netsite, NCSA 1.4, and CERN 3.0 Web servers. We also attempt to attribute the performance improvement to our various design decisions, as laid out in Section 2, and to evaluate the latency degradation of faulting objects through hierarchical caches. The measurements presented in this section were taken on SPARC 20 model 61 and SPARC 10 model 30 workstations. We will see that Harvest's high performance is mostly due to our disk directory structure, our choice to place meta-data in VM, and our threaded design.