112 lines
4.8 KiB
Plaintext
112 lines
4.8 KiB
Plaintext
package "mutilate3"
|
|
version "0.1"
|
|
usage "mutilate -s server[:port] [options]"
|
|
description "\"High-performance\" memcached benchmarking tool"
|
|
|
|
args "-c cc --show-required -C --default-optional -l"
|
|
|
|
option "verbose" v "Verbosity. Repeat for more verbose." multiple
|
|
option "quiet" - "Disable log messages."
|
|
|
|
text "\nBasic options:"
|
|
|
|
option "server" s "Memcached server hostname[:port]. \
|
|
Repeat to specify multiple servers." string multiple
|
|
option "binary" - "Use binary memcached protocol instead of ASCII."
|
|
option "qps" q "Target aggregate QPS. 0 = peak QPS." int default="0"
|
|
option "time" t "Maximum time to run (seconds)." int default="5"
|
|
|
|
option "keysize" K "Length of memcached keys (distribution)."
|
|
string default="30"
|
|
option "valuesize" V "Length of memcached values (distribution)."
|
|
string default="200"
|
|
|
|
option "records" r "Number of memcached records to use. \
|
|
If multiple memcached servers are given, this number is divided \
|
|
by the number of servers." int default="10000"
|
|
|
|
option "update" u "Ratio of set:get commands." float default="0.0"
|
|
|
|
text "\nAdvanced options:"
|
|
|
|
option "username" U "Username to use for SASL authentication." string
|
|
option "password" P "Password to use for SASL authentication." string
|
|
option "threads" T "Number of threads to spawn." int default="1"
|
|
option "affinity" - "Set CPU affinity for threads, round-robin"
|
|
option "connections" c "Connections to establish per server." int default="1"
|
|
option "depth" d "Maximum depth to pipeline requests." int default="1"
|
|
option "roundrobin" R "Assign threads to servers in round-robin fashion. \
|
|
By default, each thread connects to every server."
|
|
|
|
option "iadist" i "Inter-arrival distribution (distribution). Note: \
|
|
The distribution will automatically be adjusted to match the QPS given \
|
|
by --qps." string default="exponential"
|
|
option "skip" S "Skip transmissions if previous requests are late. This \
|
|
harms the long-term QPS average, but reduces spikes in QPS after \
|
|
long latency requests."
|
|
option "moderate" - "Enforce a minimum delay of ~1/lambda between requests."
|
|
|
|
option "noload" - "Skip database loading."
|
|
option "loadonly" - "Load database and then exit."
|
|
|
|
option "blocking" B "Use blocking epoll(). May increase latency."
|
|
option "no_nodelay" - "Don't use TCP_NODELAY."
|
|
|
|
option "warmup" w "Warmup time before starting measurement." int
|
|
option "wait" W "Time to wait after startup to start measurement." int
|
|
option "save" - "Record latency samples to given file." string
|
|
|
|
option "search" - "Search for the QPS where N-order statistic < Xus. \
|
|
(i.e. --search 95:1000 means find the QPS where 95% of requests are \
|
|
faster than 1000us)." string typestr="N:X"
|
|
option "scan" - "Scan latency across QPS rates from min to max."
|
|
string typestr="min:max:step"
|
|
|
|
text "\nAgent-mode options:"
|
|
option "agentmode" A "Run client in agent mode."
|
|
option "agent" a "Enlist remote agent." string typestr="host" multiple
|
|
option "agent_port" p "Agent port." string default="5556"
|
|
option "lambda_mul" l "Lambda multiplier. Increases share of \
|
|
QPS for this client." int default="1"
|
|
option "measure_connections" C "Master client connections per server, \
|
|
overrides --connections." int
|
|
option "measure_qps" Q "Explicitly set master client QPS, \
|
|
spread across threads and connections." int
|
|
option "measure_depth" D "Set master client connection depth." int
|
|
|
|
text "
|
|
The --measure_* options aid in taking latency measurements of the
|
|
memcached server without incurring significant client-side queuing
|
|
delay. --measure_connections allows the master to override the
|
|
--connections option. --measure_depth allows the master to operate as
|
|
an \"open-loop\" client while other agents continue as a regular
|
|
closed-loop clients. --measure_qps lets you modulate the QPS the
|
|
master queries at independent of other clients. This theoretically
|
|
normalizes the baseline queuing delay you expect to see across a wide
|
|
range of --qps values.
|
|
"
|
|
|
|
text "
|
|
Some options take a 'distribution' as an argument.
|
|
Distributions are specified by <distribution>[:<param1>[,...]].
|
|
Parameters are not required. The following distributions are supported:
|
|
|
|
[fixed:]<value> Always generates <value>.
|
|
uniform:<max> Uniform distribution between 0 and <max>.
|
|
normal:<mean>,<sd> Normal distribution.
|
|
exponential:<lambda> Exponential distribution.
|
|
pareto:<loc>,<scale>,<shape> Generalized Pareto distribution.
|
|
gev:<loc>,<scale>,<shape> Generalized Extreme Value distribution.
|
|
|
|
To recreate the Facebook \"ETC\" request stream from [1], the
|
|
following hard-coded distributions are also provided:
|
|
|
|
fb_value = a hard-coded discrete and GPareto PDF of value sizes
|
|
fb_key = \"gev:30.7984,8.20449,0.078688\", key-size distribution
|
|
fb_ia = \"pareto:0.0,16.0292,0.154971\", inter-arrival time dist.
|
|
|
|
[1] Berk Atikoglu et al., Workload Analysis of a Large-Scale Key-Value Store,
|
|
SIGMETRICS 2012
|
|
"
|
|
|