我已经习惯easysnmp
阅读 SNMP OID,但我pysnmp
现在选择了库,因为easysnmp
不支持Python3asyncio
中的架构。
考虑的问题是,pysnmp
它比其他库太慢:
pysnmp:
from pysnmp.hlapi import *
import time
t = time.time()
iterator = getCmd(SnmpEngine(),
CommunityData('public'),
UdpTransportTarget(('192.168.1.120', 161)),
ContextData(),
ObjectType(ObjectIdentity("1.3.6.1.2.1.33.1.2.7.0")))
errorIndication, errorStatus, errorIndex, varBinds = next(iterator)
if errorIndication: # SNMP engine errors
print(errorIndication)
else:
if errorStatus: # SNMP agent errors
print('%s at %s' % (
errorStatus.prettyPrint(),
varBinds[int(errorIndex)-1] if errorIndex else '?'))
else:
for varBind in varBinds: # SNMP response contents
print(' = '.join([x.prettyPrint() for x in varBind]))
print(time.time() - t, 's')
出去:
SNMPv2-SMI::mib-2.33.1.2.7.0 = 21
0.15317177772521973 s
简单的snmp
from easysnmp import snmp_get
import time
if __name__ == '__main__':
t = time.time()
response = snmp_get(
'1.3.6.1.2.1.33.1.2.7.0', hostname='192.168.1.120',
community='public', version=1
)
print(response.value)
print(time.time() - t, 's')
出去:
21
0.0063724517822265625 s
gosnmp
func elapsed(what string) func() {
start := time.Now()
fmt.Println("start")
return func() {
fmt.Printf("%s took %v\n", what, time.Since(start))
}
}
func snmpRead() {
g.Default.Target = "192.168.1.120"
err := g.Default.Connect()
if err != nil {
log.Fatalf("Connect() err: %v", err)
}
defer g.Default.Conn.Close()
oids := []string{"1.3.6.1.2.1.33.1.2.7.0"}
result, err2 := g.Default.Get(oids) // Get() accepts up to g.MAX_OIDS
if err2 != nil {
log.Fatalf("Get() err: %v", err2)
}
for i, variable := range result.Variables {
fmt.Printf("%d: oid: %s ", i, variable.Name)
switch variable.Type {
case g.OctetString:
fmt.Printf("string: %s\n", string(variable.Value.([]byte)))
default:
fmt.Printf("number: %d\n", g.ToBigInt(variable.Value))
}
}
}
func main() {
defer elapsed("snmp")()
snmpRead()
}
出去:
start
0: oid: .1.3.6.1.2.1.33.1.2.7.0 number: 21
snmp took 3.668148ms
快 30 倍于pysnmp
我需要在Python3go-routine
中填充的异步性能。asyncio
那么,这是否意味着我应该从 迁移pysnmp
到gosnmp
?