php - How to configure APC for many sites? -



php - How to configure APC for many sites? -

we're running many sites on 1 machine, apc.shm = 4g. not sufficient in caching everything, set apc.ttl= 600 unused entries evicted. it's not clear if working planned. see cache nail rate of ~91%, 100% fragmentation quickly.

we started seeing php go unresponsive requires apache restart, nil logged in php or apache logs. apache can still serve static files without issue during time. gut tells me related churn @ apc in way. here current settings:

apc.cache_by_default 1 apc.canonicalize 0 apc.coredump_unmap 0 apc.enable_cli 0 apc.enabled 1 apc.file_md5 0 apc.file_update_protection 2 apc.filters apc.gc_ttl 3600 apc.include_once_override 0 apc.lazy_classes 0 apc.lazy_functions 0 apc.max_file_size 1m apc.mmap_file_mask /dev/zero apc.num_files_hint 1024 apc.preload_path apc.report_autofilter 0 apc.rfc1867 0 apc.rfc1867_freq 0 apc.rfc1867_name apc_upload_progress apc.rfc1867_prefix upload_ apc.rfc1867_ttl 3600 apc.serializer default apc.shm_segments 1 apc.shm_size 4g apc.slam_defense 1 apc.stat 1 apc.stat_ctime 0 apc.ttl 600 apc.use_request_time 1 apc.user_entries_hint 4096 apc.user_ttl 7200 apc.write_lock 1

a couple of questions:

we modified apc.ttl did not alter apc.gc_ttl @ same time. lowering value help clear files out more , cut down fragmentation?

would improve off leaving apc.ttl = 0 , allow apc empty , rebuild every time cache fills?

thanks in advance!

apc.num_files_hint 1024

this directive tells apc how many php files have maintain in cache.

it used hash key, making prime number recommended it not plenty if have cache 4gb of php files ! (shared hosting guess)

so please start putting bigger figure here, prime number bigger value :

find /var/www -type f -name "*.php" |wc -l

you may have chance understand what's going on stracing apache process handling php scripts when apache goes unresponsive, using

strace -tt -o output.txt <pid of apache>

find pid using server-status page.

php apc

Comments

Post a Comment

Popular posts from this blog

php - Android app custom user registration and login with cookie using facebook sdk -

php - Android app custom user registration and login with cookie using facebook sdk - i developing android application in users need register , log in using facebook. approximately, flow. open app first time, authenticate facebook, data, send info server create them business relationship in application, start session new business relationship in server, cookie perform later interactions. so far good. what need know wich info have send server, can able identify users when log in seccond time. because need start session in server , send cookie android app farther interactions. i'm using php server side language. i thinking getting getaccesstoken() in android facebook sdk, pass server on business relationship creation , storing in android app. but can't manage how login users on sec time utilize app. any suggestions ? in advance ! to uniquely identify user within app, should create request /me , user's id. guaranteed unique , remain con
Read more

django - Access session in user model .save() -

django - Access session in user model .save() - is possible access current session in user model .save()? pseudo code of want achieve: # users.models.py def save(self, *args, **kwargs): created = true if self.pk: created = false super(abstractuser, self).save(*args, **kwargs) # post-save if created: look_for_invite_in_session_and_register_if_found(self, session) seems wrong in architecture. shouldn't access request in models layer. work request must done in view. can this: user, created = abstractuser.objects.get_or_create(name=name) if created: look_for_invite_in_session_and_register_if_found(user, request.session) django session
Read more

php - .htaccess Multiple Rewrite Rules / Prioritizing -

php - .htaccess Multiple Rewrite Rules / Prioritizing - here current htaccess file: rewriteengine on rewritecond %{http_host} !^www\.website\.com [nc] rewritecond %{http_host} ([^.]+)\.website\.com [nc] rewriterule ^(.*)$ http://www.website.com/gotourl.php?urlid=?%1 [l] rewriterule ^(\w+)$ ./gotourl.php?urlid=$1 [nc,l] rewriterule ^(\w+)/$ ./gotourl.php?urlid=$1 [nc,l] the website in question url shortener i'm working on testing/developing , personal use. above code may not ideal i'm not familiar .htaccess , made via googling , testing. want url shortening aspect: http://website.com/1234 -> http://website.com/gotourl.php?urlid=1234 http://website.com/1234/ -> http://website.com/gotourl.php?urlid=1234 the problem cannot figure out how ignore directories. want specific directories go specific pages: http://website.com/img (or) http://website.com/img/ -> http://website.com/img.php http://website.com/img/1234 (or) http://website.com/
Read more