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Add support for two classes of clients experiment #16

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Add support for two classes of clients experiment #16

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352572f
add support for two classes of clients experiment
vitorenesduarte Apr 2, 2019
3f84b8a
log black color value
vitorenesduarte Apr 2, 2019
3d3218a
Fix two-class command generation
vitorenesduarte Apr 18, 2019
23fdd16
Remove unnecessary client argument
vitorenesduarte Apr 18, 2019
ae9a140
Remove conflict bounds check
vitorenesduarte Apr 18, 2019
a3f1f6c
Merge branch 'master' into two
vitorenesduarte Jun 10, 2019
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6 changes: 2 additions & 4 deletions bin/run.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -59,11 +59,9 @@ fi

# Usage of ./bin/client:
# -c int
# Percentage of conflicts. Defaults to 0%
# Percentage of conflicts. Defaults to 0. If the conflict rate is 142, two classes of clients (conflict and non-conflicting) are created.
# -e Egalitarian (no leader).
# -f Fast Paxos: send message directly to all replicas.
# -id string
# the id of the client. Default is RFC 4122 nodeID.
# -maddr string
# Master address. Defaults to localhost
# -mport int
Expand All @@ -89,7 +87,7 @@ if [ "${TYPE}" == "client" ]; then
mkdir -p logs/

for i in $(seq 1 ${NCLIENTS}); do
${DIR}/client ${args} 2>&1 | tee -a logs/c_${i}.txt ${ALL} >/dev/null &
${DIR}/client -id ${i} ${args} 2>&1 | tee -a logs/c_${i}.txt ${ALL} >/dev/null &
echo "> Client $i of ${NCLIENTS} started!"
done

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32 changes: 18 additions & 14 deletions src/client/client.go
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,7 @@ import (
"time"
)

var clientId string = *flag.String("id", "", "the id of the client. Default is RFC 4122 nodeID.")
var id *int = flag.Int("id", 1, "The id of the client.")
var masterAddr *string = flag.String("maddr", "", "Master address. Defaults to localhost")
var masterPort *int = flag.Int("mport", 7087, "Master port. ")
var reqsNb *int = flag.Int("q", 1000, "Total number of requests. ")
Expand All @@ -22,7 +22,7 @@ var noLeader *bool = flag.Bool("e", false, "Egalitarian (no leader). ")
var fast *bool = flag.Bool("f", false, "Fast Paxos: send message directly to all replicas. ")
var localReads *bool = flag.Bool("l", false, "Execute reads at the closest (local) replica. ")
var procs *int = flag.Int("p", 2, "GOMAXPROCS. ")
var conflicts *int = flag.Int("c", 0, "Percentage of conflicts. Defaults to 0%")
var conflicts *int = flag.Int("c", 0, "Percentage of conflicts. Defaults to 0. If the conflict rate is 142, two classes of clients are created: one that issues conflicting commands, another that doesn't")
var verbose *bool = flag.Bool("v", false, "verbose mode. ")
var scan *bool = flag.Bool("s", false, "replace read with short scan (100 elements)")

Expand All @@ -34,10 +34,6 @@ func main() {

rand.Seed(time.Now().UnixNano())

if *conflicts > 100 {
log.Fatalf("Conflicts percentage must be between 0 and 100.\n")
}

var proxy *bindings.Parameters
for {
proxy = bindings.NewParameters(*masterAddr, *masterPort, *verbose, *noLeader, *fast, *localReads)
Expand All @@ -48,16 +44,13 @@ func main() {
proxy.Disconnect()
}

if clientId == "" {
clientId = uuid.New().String()
}

log.Printf("client: %v (verbose=%v, psize=%v, conflicts=%v)", clientId, *verbose, *psize, *conflicts)
log.Printf("client: %v (verbose=%v, psize=%v, conflicts=%v)", *id, *verbose, *psize, *conflicts)

karray := make([]state.Key, *reqsNb)
put := make([]bool, *reqsNb)

clientKey := state.Key(uint64(uuid.New().Time())) // a command id unique to this client.

for i := 0; i < *reqsNb; i++ {
put[i] = false
if *writes > 0 {
Expand All @@ -66,10 +59,21 @@ func main() {
put[i] = true
}
}

// maybe issue unique key per client
// issue 42 if:
// - two-class experiment and we have an even id
// - normal experiment and the random says so
karray[i] = clientKey
if *conflicts > 0 {
r := rand.Intn(100)
if r <= *conflicts {

if *conflicts == 142 {
// two-class experiment
if *id % 2 == 0 {
karray[i] = 42
}
} else {
// normal experiment
if rand.Intn(100) < *conflicts {
karray[i] = 42
}
}
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