Browse Source

Write request id to first 8 bytes of a file, instead of whole file, for

better write performance.
pull/28/head
Chris Lu 10 years ago
parent
commit
8af4753002
  1. 2
      go/util/constants.go
  2. 26
      go/weed/benchmark.go
  3. 10
      go/weed/server.go

2
go/util/constants.go

@ -1,5 +1,5 @@
package util
const (
VERSION = "0.64"
VERSION = "0.66"
)

26
go/weed/benchmark.go

@ -31,6 +31,7 @@ type BenchmarkOptions struct {
sequentialRead *bool
collection *string
cpuprofile *string
maxCpu *int
vid2server map[string]string //cache for vid locations
}
@ -51,7 +52,8 @@ func init() {
b.read = cmdBenchmark.Flag.Bool("read", true, "enable read")
b.sequentialRead = cmdBenchmark.Flag.Bool("readSequentially", false, "randomly read by ids from \"-list\" specified file")
b.collection = cmdBenchmark.Flag.String("collection", "benchmark", "write data to this collection")
b.cpuprofile = cmdBenchmark.Flag.String("cpuprofile", "", "write cpu profile to file")
b.cpuprofile = cmdBenchmark.Flag.String("cpuprofile", "", "cpu profile output file")
b.maxCpu = cmdBenchmark.Flag.Int("maxCpu", 0, "maximum number of CPUs. 0 means all available CPUs")
b.vid2server = make(map[string]string)
}
@ -59,25 +61,25 @@ var cmdBenchmark = &Command{
UsageLine: "benchmark -server=localhost:9333 -c=10 -n=100000",
Short: "benchmark on writing millions of files and read out",
Long: `benchmark on an empty weed file system.
Two tests during benchmark:
1) write lots of small files to the system
2) read the files out
The file content is mostly zero, but no compression is done.
You can choose to only benchmark read or write.
During write, the list of uploaded file ids is stored in "-list" specified file.
You can also use your own list of file ids to run read test.
Write speed and read speed will be collected.
The numbers are used to get a sense of the system.
Usually your network or the hard drive is the real bottleneck.
Another thing to watch is whether the volumes are evenly distributed
to each volume server. Because the 7 more benchmark volumes are randomly distributed
to servers with free slots, it's highly possible some servers have uneven amount of
benchmark volumes. To remedy this, you can use this to grow the benchmark volumes
benchmark volumes. To remedy this, you can use this to grow the benchmark volumes
before starting the benchmark command:
http://localhost:9333/vol/grow?collection=benchmark&count=5
@ -100,6 +102,10 @@ func init() {
func runbenchmark(cmd *Command, args []string) bool {
fmt.Printf("This is Seaweed File System version %s %s %s\n", util.VERSION, runtime.GOOS, runtime.GOARCH)
if *b.maxCpu < 1 {
*b.maxCpu = runtime.NumCPU()
}
runtime.GOMAXPROCS(*b.maxCpu)
if *b.cpuprofile != "" {
f, err := os.Create(*b.cpuprofile)
if err != nil {
@ -497,9 +503,9 @@ func (l *FakeReader) Read(p []byte) (n int, err error) {
} else {
n = len(p)
}
for i := 0; i < n-8; i += 8 {
for s := uint(0); s < 8; s++ {
p[i] = byte(l.id >> (s * 8))
if n >= 8 {
for i := 0; i < 8; i++ {
p[i] = byte(l.id >> uint(i*8))
}
}
l.size -= int64(n)

10
go/weed/server.go

@ -32,17 +32,17 @@ func init() {
var cmdServer = &Command{
UsageLine: "server -port=8080 -dir=/tmp -volume.max=5 -ip=server_name",
Short: "start a server, including volume server, and automatically elect a master server",
Long: `start both a volume server to provide storage spaces
Long: `start both a volume server to provide storage spaces
and a master server to provide volume=>location mapping service and sequence number of file ids
This is provided as a convenient way to start both volume server and master server.
The servers are exactly the same as starting them separately.
So other volume servers can use this embedded master server also.
Optionally, one filer server can be started. Logically, filer servers should not be in a cluster.
They run with meta data on disk, not shared. So each filer server is different.
`,
}
@ -73,7 +73,7 @@ var (
)
func init() {
serverOptions.cpuprofile = cmdServer.Flag.String("cpuprofile", "", "write cpu profile to file")
serverOptions.cpuprofile = cmdServer.Flag.String("cpuprofile", "", "cpu profile output file")
filerOptions.master = cmdServer.Flag.String("filer.master", "", "default to current master server")
filerOptions.collection = cmdServer.Flag.String("filer.collection", "", "all data will be stored in this collection")
filerOptions.port = cmdServer.Flag.Int("filer.port", 8888, "filer server http listen port")

Loading…
Cancel
Save