XCache + memcached?
- Thread starter Moshe1010
- Start date
Moshe1010
Well-known member
Why not just use XCache by itself? It has a variable cache.
I got the idea that XCache works as opcache and it would be better to add data cache, although I'm not sure how much benefit small/medium boards have from data cache.
Would you recommend adding XCache to config.php or just leave it to run as is?
Thanks.
digitalpoint
Well-known member
If you are not using a multiple web server setup, you don't need memcached (in fact it would be slower than using XCache's data store).
Moshe1010
Well-known member
What's in the FAQ is enough for configuring XenForo to use XCache, but I'm talking about configuring XCache itself (through php.ini settings). Such configuration depends on your server specs, so I couldn't really say.
I wouldn't want to anyways because I'm no expert.. more of a guess and check kind of person and it's no huge deal to me when something goes wrong on one of my own boxes.
Moshe1010
Well-known member
I don't care breaking things since its a managed VPS (full support).
Specs:
2 X Xeon E5 2650
4GB RAM
XCache in php.ini:
I'm wondering if xcache.optimizer does anything since in version 2 that functions didn't work.
That's what I have in config.php
Not sure if I need to add cacheSessions to my config.php since I know there are some problems with users logging in with APC.
Specs:
2 X Xeon E5 2650
4GB RAM
XCache in php.ini:
Code:
xcache.shm_scheme = "mmap"
xcache.size = 512M
xcache.count = 1
xcache.slots = 8K
xcache.ttl = 0
xcache.gc_interval = 0
xcache.var_size = 8M
xcache.var_count = 1
xcache.var_slots = 8K
xcache.var_ttl = 0
xcache.var_maxttl = 0
xcache.var_gc_interval = 300
xcache.var_namespace_mode = 0
xcache.var_namespace = ""
xcache.readonly_protection = Off
xcache.cacher = On
xcache.stat = On
xcache.optimizer = Off
[xcache.coverager]
xcache.coverager = Off
xcache.coverager_autostart = On
xcache.coveragedump_directory = ""That's what I have in config.php
Code:
$config['cache']['enabled'] = true;
$config['cache']['frontend'] = 'Core';
$config['cache']['frontendOptions']['cache_id_prefix'] = 'xf_';
$config['cache']['backend'] = 'XCache';Not sure if I need to add cacheSessions to my config.php since I know there are some problems with users logging in with APC.
Last edited:
MattW
Well-known member
This is my config.php using Xcache (storing sessions as well)
and my Xcache settings (VPS with 8GB RAM)
PHP:
$config['cache']['enabled'] = true;
$config['cache']['frontend'] = 'Core';
$config['cache']['frontendOptions']['cache_id_prefix'] = 'xf_';
$config['cache']['cacheSessions'] = true;
$config['cache']['backend']='Xcache';and my Xcache settings (VPS with 8GB RAM)
Code:
extension = "xcache.so"
xcache.admin.enable_auth = On
xcache.admin.user = "USERNAME"
xcache.admin.pass = "MD5PASSWORD"
xcache.shm_scheme = "mmap"
xcache.size = 256M
xcache.count = 14
xcache.slots = 8K
xcache.ttl = 0
xcache.gc_interval = 0
xcache.var_size = 32M
xcache.var_count = 14
xcache.var_slots = 1K
xcache.var_ttl = 0
xcache.var_maxttl = 0
xcache.var_gc_interval = 300
xcache.var_namespace_mode = 0
xcache.var_namespace = ""
xcache.readonly_protection = Off
xcache.mmap_path = "/dev/zero"
xcache.coredump_directory = ""
xcache.coredump_type = 0
xcache.disable_on_crash = Off
xcache.experimental = Off
xcache.cacher = On
xcache.stat = On
xcache.optimizer = Off
xcache.coverager = Off
xcache.coverager_autostart = On
xcache.coveragedump_directory = ""
Last edited:
Moshe1010
Well-known member
Thanks. We have everything the same except xcache.count, which is based on CPU cores as I know that. Is there a reason for 14? I was thinking raising it to 8, although I'm not sure.
And xcache.var_size that is 32M at yours, why so big?
MattW
Well-known member
Mine is set to 14 because I have access to 14 CPU cores
I also have my xcache.var_size at 32M because I have a few other sites (phpBB3) using it as well. It's only using 6M, but doesn't hurt to have 32M
Moshe1010
Well-known member
Hi,
Do you have any idea what that means?
I added XCache in my config.php, even in my vB config.php and that's weird.
Last edited:
Moshe1010
Well-known member
Yes, but I'm using a test area, so there are only 3-4 people who are using the system.
CTXMedia
Well-known member
I think the session data should still remain, even after the people have stopped posting (providing they don't logout) - so perhaps the session data is not caching as expected?
Moshe1010
Well-known member
I had a weird error that said I have no timezone in my php.ini
When I add a timezone , then I get the error above. If I delete the timezone, then I get PHP Compile time error (couple lines above in the diagnosis), but the VAR cacher error goes away.
This is my config.php, nothing special there:
When I add a timezone , then I get the error above. If I delete the timezone, then I get PHP Compile time error (couple lines above in the diagnosis), but the VAR cacher error goes away.
This is my config.php, nothing special there:
Code:
$config['cache']['enabled'] = true;
$config['cache']['frontend'] = 'Core';
$config['cache']['frontendOptions']['cache_id_prefix'] = 'xf_';
$config['cache']['cacheSessions'] = true;
$config['cache']['backend'] = 'xcache';
MattW
Well-known member
Probably. Is Apache restarting when you are getting logged out? Or, how are you running PHP (DSO/suPHP/FastCGI)?
