Hi every one
we are using moodle 2.9+ (will upgrade in future) and have about 5000 users. authentication is working by LDAP . but login takes too time. about 30 sec.I want to optimize that. fallowing information has taken at modules>caching>Test performance page:
Cache store performance reporting - 100 unique requests per operation.
Store requests when used as an application cache.
| Plugin | Result | Set | Get - Hit | Get - Miss | Delete |
|---|---|---|---|---|---|
| File cache | Tested | 0.3412 | 0.0481 | 0.0030 | 0.0285 |
| Memcache | Invalid plugin | - | - | - | - |
| Memcached | Invalid plugin | - | - | - | - |
| MongoDB | Invalid plugin | - | - | - | - |
| Session cache | Unsupported mode | - | - | - | - |
| Static request cache | Unsupported mode | - | - | - | - |
Store requests when used as a session cache.
| Plugin | Result | Set | Get - Hit | Get - Miss | Delete |
|---|---|---|---|---|---|
| File cache | Tested | 0.5848 | 0.0320 | 0.0022 | 0.0262 |
| Memcache | Invalid plugin | - | - | - | - |
| Memcached | Invalid plugin | - | - | - | - |
| MongoDB | Invalid plugin | - | - | - | - |
| Session cache | Tested | 0.0004 | 0.0002 | 0.0001 | 0.0002 |
| Static request cache | Unsupported mode | - | - | - | - |
Store requests when used as a request cache.
| Plugin | Result | Set | Get - Hit | Get - Miss | Delete |
|---|---|---|---|---|---|
| File cache | Unsupported mode | - | - | - | - |
| Memcache | Invalid plugin | - | - | - | - |
| Memcached | Invalid plugin | - | - | - | - |
| MongoDB | Invalid plugin | - | - | - | - |
| Session cache | Unsupported mode | - | - | - | - |
| Static request cache | Tested | 0.0003 | 0.0001 | 0.0001 | 0.0002 |
Moving to Hardware and performance...
Your file caching is VERY slow. On my test server (which is nothing special at all) the performance is an order of magnitude faster.
Is your 'moodledata' on some sort of slow storage (NFS, some other share, some mystery virtualised storage)? You need to set up a proper cache using Redis, memcached or similar.
If login is taking a long time, I would do some testing to see if its not the ldap server itself that is getting bogged down and not your web server. Just doing simple logins via command line and getting the wait times would be a good test.
As for your file caching times. I am guessing you are using something other than just local disk, most likely NFS. I would recommend checking out using Redis for most of your caching if you cant use a more enterprise storage (more money) solution.