From the UNICON Main Menu, select Manage Services > NFS Server > Set Parameters.
Complete procedure and exit.
Set system parameters and view statistics using the following UNICON screens:
The following function keys operate as specified when using the screens described in this section:
The NFS server parameters form displays the server parameters.
From the UNICON Main Menu, select Manage Services > NFS Server > Set Parameters.
Complete procedure and exit.
The form contains the following fields: IDXparameters:NetWare NFS server:description of <$startrange>/IDX
Number of NFS Threads---the number of NFS service processes that can be handled simultaneously.
If this number is too low, two things happen:
If this value is too large, the demand on resources (such as memory) is increased at the expense of responsiveness.
Number of Open File Cache---the number of files the NFS server can have open simultaneously. Increasing the value makes it more likely that information in files being accessed by NFS clients is found in cache.
Open File Aging Interval---how many seconds the NFS server keeps a file's information in cache memory. When a file is held in cache, NetWare® users cannot access it. Larger values produce better performance, but they also make NetWare users wait longer to access files that are being manipulated by NFS.
NOTE: Set this parameter to 0 only if you are using cross-platform applications where there is a need for the NFS server to close a file immediately after a read/write operation so that the file is available for another read/write operation from a DOS NetWare client. When data access through the NFS Server is random, setting the Aging Interval to 0 might increase performance. However, if data access forms a pattern, setting the Aging Interval to 0 might decrease performance.
Number of Request Cache Entries---the number of requests that can be held in cache memory.
If this value is too small and the server is overloaded, a duplicate request can arrive after the first request is removed from memory. The server does not know what action was taken on the first request and tries to comply with the second request, such as deleting a file that has already been removed. The server reports an error when it tries to service a request that was already performed.
When this value is set high enough, the first request and its response remain in memory. Upon receiving a duplicate request, the server responds with the same response used for the first request.
If the request cache is too large, unnecessary memory usage results.
Enable Cache Write Through---whether NFS holds modified file information in cache memory or writes the modified information directly to the disk before acknowledging to the client that the request has been completed. Disabling cache write through dramatically improves disk performance. However, with the data held in cache memory instead of being written immediately to disk, there is a possibility that data can be damaged or lost if the server fails before the data can be written to the disk.
Enable cache write through if either of the following are true and the NetWare server is not connected to an uninterruptible power supply:
Lock Manager Grace PeriodIDXlock manager service:NFS server:grace period/IDX---how long the NetWare NFS lock manager accepts client requests to reset locks that were in effect prior to a system crash. IDXparameters:NetWare NFS server:description of <$endrange>/IDX
The NFS requests screen displays statistics relating to NFS requests.
From the UNICON Main Menu, select Manage Services > NFS Server > View Statistics > NFS Requests.
Complete procedure and exit.
The following information is displayed:
Event Name---the name of the remote procedure call issued by the NFS client.
No. of Calls---the number of times the call was issued.
Percent of Calls---the percentage of total calls this number represents.
Seconds/Call---the average number of seconds required to execute the procedure.
Total Seconds---the total number of seconds that the server has spent executing the procedure for all calls.
The NFS Server Utilization Percentage screen displays NFS server activity.IDXmemory utilization:NFS Server/IDX
From the UNICON Main Menu, select Manage Services > NFS Server > View Statistics > Utilization.
Complete procedure and exit.
The information in this screen's fields is a snapshot of NFS server usage at the time the menu option is selected. The information is displayed in the following columns:
CPU---what percentage of the time the NFS server is accessing the CPU.
Disk---what percentage of the time the NFS server is accessing the hard disk.
Network---what percentage of the time the NFS server is accessing the network.
Idle---what percentage of the time the NFS server spends waiting or idle between requests.
Data Processed---data sent to the client and data read from the disk.
Total Bytes Processed---the total number of bytes processed for each type of data.
KBytes/Second---the number of kilobytes processed in 1 second.
The NFS Gateway parameters form displays Gateway tunable parameters.
From the UNICON Main Menu, select Manage Services > NFS Gateway > Set Parameters.
Complete procedure and exit.
This form contains the following fields: IDXparameters:NFS Gateway server:description of <$startrange>/IDX
Number of Cache ProcessesIDXnumber of cache processes parameter/IDXIDXtunable parameters:number of cache processes/IDX---the number of cache processes used by the Gateway. The cache processes move data between the cache buffers and the remote NFS server. You can increase performance by increasing the number of processes. Valid parameter values are integers from 1 to 20. The default value is 10. Change the number of cache processes by typing a number in this field. You must stop and restart the Gateway before a change to this field takes effect.
Lifetime of Cache BuffersIDXlifetime for cache buffers parameter/IDXIDXtunable parameters:lifetime for cache buffers/IDX---how many seconds the Gateway retains a file's data and attributes in cache memory. Valid parameter values are integers from 1 to 600. The default value is 10. Change the lifetime of cache buffers by typing a number in this field. The change takes effect immediately.
Larger values produce better performance but can lead to data inconsistencies between the information in the cache buffer and the information on the NFS server.
Directory Comparison Frequency---IDXdirectory comparison frequency parameter/IDXIDXtunable parameters:directory comparison frequency/IDXhow often Gateway checks file information on the remote NFS server for changes made by UNIX* users. This comparison ensures that the file tracking information maintained in the shadow file on the Gateway is consistent with the file information on the remote NFS server.IDXparameters:directory comparison frequency/IDXIDXdirectory comparison frequency/IDX
Valid parameter values are integers from 0 to 600. The default value is 300. Change the directory comparison frequency interval by typing a number in this field. The change takes effect immediately.
Decrease this number as more UNIX users access the same remote file system. Changes made by NetWare DOS clients do not require a comparison check because changes are updated immediately. Therefore, if a remote file system is used exclusively by NetWare users, you can increase performance by increasing this number. This reduces the number of calls Gateway must make to the server.
Minimum Size of CacheIDXcache:minimum cache size/IDX---IDXminimum size of cache parameter/IDXIDXtunable parameters:minimum size of cache/IDXthe minimum amount of memory allocated to cache buffers. Cache buffers store file information such as data, attributes, and directory tables. Valid parameter values are integers from 256 to 1024. The default value is 512 KB. Change the minimum size of the cache buffers by typing a number in this field. The change takes effect immediately.
Increasing this value allows more information to be stored in the cache buffers, making it more likely that directory information being accessed by NFS clients will be found in cache.
Maximum Size of CacheIDXcache:maximum cache size/IDX---IDXmaximum size of cache parameter/IDXIDXtunable parameters:maximum size of cache/IDXthe maximum amount of memory allocated to cache buffers. Cache buffers store file information such as data, attributes, and directory tables. Valid parameter values are integers from 1024 to 204800. The default value is 1024 KB. Change the maximum size of the cache buffers by typing a number in this field. The change takes effect immediately. IDXparameters:NFS Gateway server:description of <$endrange>/IDX
The NFS Client Requests screen displays statistics relating to NFS requests.
From the UNICON Main Menu, select Manage Services > NFS Gateway > View Statistics > NFS Client Requests.
The utility displays the NFS Gateway Volumes list.
Select either <<All Volumes>> or the name of the volume for which you want information.
The utility displays the NFS Client Requests screen. IDXNFS client requests:description of client calls to NetWare NFS Gateway/IDX
IDXnetwork overload/IDXThe left column identifies the call issued by the NFS client. The middle column lists how many times the remote procedure has been called. The right column lists the number of timeouts or failures encountered in executing the procedure.IDXclient call:failures/IDX
IDXclient call:timeouts/IDXIf the number of timeouts (failures) is greater than 5 percent of the number of calls for any given procedure, the network is overloaded. If the number of timeouts or failures is close to or equals the number of calls for any procedure, there might be a problem with the NFS server.
NOTE: These statistics can also be useful in helping technical support determine the exact cause of a problem with the NFS server.
You can scroll this form to view additional information.
The Memory Utilization screen provides statistics about how the Gateway is using memory.IDXmemory display/IDXIDXperformance:memory screen/IDX
From the UNICON Main Menu, select Manage Services > NFS Gateway > View Statistics > Memory Utilization.
Complete procedure and exit.
This screen contains the following fields:
MinimumIDXminimum memory parameter/IDX---the value set for Minimum Size of Cache in the NFS Gateway Parameters form described on "NFS Gateway Parameters Form."
MaximumIDXmaximum memory parameter/IDX---the value set for Maximum Size of Cache in the NFS Gateway Parameters form described on "NFS Gateway Parameters Form."
In UseIDXmemory in use parameter/IDX---the amount of cache memory in use. This amount is always less than or equal to the value specified by the Maximum Size of Cache parameter in the NFS Gateway Parameters form described on "NFS Gateway Parameters Form." If this value is equal to the Maximum Size of Cache value, the memory available to cache buffers is insufficient.