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The Go programming language
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The previous code was preparing arrays of entries that would be filled if there was one entry every 128 bytes. Moving to a 4096 byte interval reduces the overhead per megabyte of address space to 2kB from 64kB (on 64-bit systems). The performance impact will be negative for very small MemProfileRate. test/bench/garbage/tree2 -heapsize 800000000 (default memprofilerate) Before: mprof 65993056 bytes (1664 bucketmem + 65991392 addrmem) After: mprof 1989984 bytes (1680 bucketmem + 1988304 addrmem) R=golang-dev, rsc CC=golang-dev, remy https://golang.org/cl/6257069 |
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This is the source code repository for the Go programming language. For documentation about how to install and use Go, visit http://golang.org/ or load doc/install.html in your web browser. After installing Go, you can view a nicely formatted doc/install.html by running godoc --http=:6060 and then visiting http://localhost:6060/doc/install.html. Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file. -- Binary Distribution Notes If you have just untarred a binary Go distribution, you need to set the environment variable $GOROOT to the full path of the go directory (the one containing this README). You can omit the variable if you unpack it into /usr/local/go, or if you rebuild from sources by running all.bash (see doc/install.html). You should also add the Go binary directory $GOROOT/bin to your shell's path. For example, if you extracted the tar file into $HOME/go, you might put the following in your .profile: export GOROOT=$HOME/go export PATH=$PATH:$GOROOT/bin See doc/install.html for more details.