Ulf Zibis wrote:
Am 26.06.2009 17:47, Xueming Shen schrieb:
Ulf,
I do have a "prototype implementation" that uses buffer based
read/write on Jar/ZipFile, it
is not that "much" faster as you would have expected (basically the
gain of using direct buffer
comes from saving one or two memory copy of the content, which is
very faster, compared to
the "real hard" work of moving bits from harddisk to memory).
Often those bits are just cached in memory from OS side, maybe also
big chunks of rt.jar and charsets.jar after VM is launched.
Another 2 cents!
-Ulf
Our performance team works on both warm start and cold start, the terms
we use for the them:-)
