使用grok解析activedirectory日志的速度很慢(代码片段)

我是grok的新手。我试图使用grok解析器解析Microsoft active directory logs。我正在使用java grok库。

日志看起来像

<13> 10.200.3.7  10.20.211.15 07/04/2017 15:34:00 PM SERVER01 07/04/2017 15:34:00 PM  LogName=Security  SourceName=Microsoft Windows security auditing.  EventCode=4624  EventType=0  Type=Information  ComputerName=SERVER01.network.local  TaskCategory=Logon  OpCode=Info  RecordNumber=1809490942  Keywords=Audit Success  Message=An account was successfully logged on.      Subject:     Security ID:        S-1-0-0     Account Name:       User-330    Account Domain:     -       Logon ID:       0x0      Logon Type:            3      New Logon:       Security ID:        S-1-5-18    Account Name:       SERVER01$       Account Domain:     DOMAIN      Logon ID:       0x12393ab39     Logon GUID:     C893D0A2-6498-BBE3-560D-0A1088FA4D9E      Process Information:      Process ID:     0x0     Process Name:       -      Network Information:     Workstation Name:       Source Network Address: 1.68.4.213      Source Port:        57261      Detailed Authentication Information:     Logon Process:      Kerberos    Authentication Package: Kerberos    Transited Services: -       Package Name (NTLM only):   -       Key Length:     0      This event is generated when a logon session is created. It is generated on the computer that was accessed.      The subject fields indicate the account on the local system which requested the logon. This is most commonly a service such as the Server service, or a local process such as Winlogon.exe or Services.exe.      The logon type field indicates the kind of logon that occurred. The most common types are 2 (interactive) and 3 (network).      The New Logon fields indicate the account for whom the new logon was created, i.e. the account that was logged on.      The network fields indicate where a remote logon request originated. Workstation name is not always available and may be left blank in some cases.      The authentication information fields provide detailed information about this specific logon request.      - Logon GUID is a unique identifier that can be used to correlate this event with a KDC event.      - Transited services indicate which intermediate services have participated in this logon request.      - Package name
<13> 10.200.3.7  10.20.211.15 07/04/2017 15:34:00 PM SERVER01 07/04/2017 15:34:00 PM  LogName=Security  SourceName=Microsoft Windows security auditing.  EventCode=4624  EventType=0  Type=Information  ComputerName=SERVER01.network.local  TaskCategory=Logon  OpCode=Info  RecordNumber=1809490942  Keywords=Audit Success  Message=An account was successfully logged on.      Subject:     Security ID:        S-1-0-0     Account Name:       User-331    Account Domain:     -       Logon ID:       0x0      Logon Type:            3      New Logon:       Security ID:        S-1-5-18    Account Name:       SERVER01$       Account Domain:     DOMAIN      Logon ID:       0x12393ab39     Logon GUID:     C893D0A2-6498-BBE3-560D-0A1088FA4D9E      Process Information:      Process ID:     0x0     Process Name:       -      Network Information:     Workstation Name:       Source Network Address: 1.68.4.214      Source Port:        57261      Detailed Authentication Information:     Logon Process:      Kerberos    Authentication Package: Kerberos    Transited Services: -       Package Name (NTLM only):   -       Key Length:     0      This event is generated when a logon session is created. It is generated on the computer that was accessed.      The subject fields indicate the account on the local system which requested the logon. This is most commonly a service such as the Server service, or a local process such as Winlogon.exe or Services.exe.      The logon type field indicates the kind of logon that occurred. The most common types are 2 (interactive) and 3 (network).      The New Logon fields indicate the account for whom the new logon was created, i.e. the account that was logged on.      The network fields indicate where a remote logon request originated. Workstation name is not always available and may be left blank in some cases.      The authentication information fields provide detailed information about this specific logon request.      - Logon GUID is a unique identifier that can be used to correlate this event with a KDC event.      - Transited services indicate which intermediate services have participated in this logon request.      - Package name

我的格鲁克模式是

<%USER:hField1> %IPV4:hIp1  %IPV4:hIp2 %DATESTAMP_12HOUR:hTime1;date;dd/MM/yyyy hh:mm:ss a %USER:hField2 %DATESTAMP_12HOUR:hTime2;date;dd/MM/yyyy hh:mm:ss a  LogName=%USER:logname%SPACESourceName=%GREEDYDATA:sourceName%SPACEEventCode=%GREEDYDATA:eventCode%SPACEEventType=%GREEDYDATA:eventType%SPACEType=%GREEDYDATA:typeField%SPACE ComputerName=%GREEDYDATA:computerName%SPACETaskCategory=%GREEDYDATA:taskCategory%SPACEOpCode=%GREEDYDATA:opCode%SPACERecordNumber=%GREEDYDATA:recordNumber%SPACEKeywords=%GREEDYDATA:keywords%SPACEMessage=%NON_DOT_DELIMITER:message.%SPACE%GREEDYDATA:jsonData

问题是，与我的自定义java解析器相比，它非常慢。我的自定义java解析器需要2.5秒来解析50K记录，而使用grok模式解析对于相同的数据需要60秒。

我的解析器有问题吗？