Trying to use APC but it seems to be clearing out?

[semprot]

Originally Posted by NiteWave

- litespeed uptime is good, but
- apc uptime is bad

if you refresh the apc stats page repeatly,
check the apc.mmap_file_mask value, like /tmp/apc.nyEjzk,
you should see 2 different files, corresponding 2 groups of lsphp5.

I see no "apc.mmap_file_mask" on my stats page. I think because my APC was compiled with "--disable-apc-mmap".
Should i recompile APC with mmap?
(as far as i remember, when my APC had mmap, i only saw 1 apc.mmap_file_mask value on stats page)

If not, what should i do?

[NiteWave]

Should i recompile APC with mmap?

yes, please. we study the option -disable-apc-mmap in 2 ways:
1.by reading the APC source code
2.actual tests

as we pointed out in previous thread: it not working at all.
--enable-apc-mmap is enabled by default since APC 3.0.18.
so it's a better method than --disable-apc-mmap which is default before 3.0.18

i only saw 1 apc.mmap_file_mask value on stats page

please refresh repeatedly, it should have 2 values if you have 2 groups of lsphp5

root@mybox [~]# pstree -p | grep litespeed
|-litespeed(19722)-+-httpd(19723)
| |-litespeed(19724)-+-lsphp5(19730)-+-lsphp5(19734)
| | |-{litespeed}(19726)
| | `-{litespeed}(19728)
| `-litespeed(19725)-+-lsphp5(19772)-+-lsphp5(19809)
| |-{litespeed}(19727)
| `-{litespeed}(19729)

one group is lsphp5(19730), another one is lsphp5(19772)

[semprot]

Originally Posted by NiteWave

yes, please. we study the option -disable-apc-mmap in 2 ways:
1.by reading the APC source code
2.actual tests

as we pointed out in previous thread: it not working at all.
--enable-apc-mmap is enabled by default since APC 3.0.18.
so it's a better method than --disable-apc-mmap which is default before 3.0.18


please refresh repeatedly, it should have 2 values if you have 2 groups of lsphp5


one group is lsphp5(19730), another one is lsphp5(19772)

I have recompiled APC with mmap enabled.

But i still see 1 value. Is it the cause of my problem?

FYI i have LSAPI_AVOID_FORK=1 , i don't know whether it is related with 1 mmap or not.

root@mybox [~]# pstree -p | grep litespeed
        |-litespeed(24846)-+-httpd(24847)
        |                  |-litespeed(24848)-+-lsphp5(24856)-+-lsphp5(24857)
        |                  |                  |-{litespeed}(24850)
        |                  |                  `-{litespeed}(24851)
        |                  `-litespeed(24849)-+-lsphp5(24901)-+-lsphp5(24904)
        |                                     |-{litespeed}(24852)
        |                                     `-{litespeed}(24853)

apc.cache_by_default	1
apc.canonicalize	1
apc.coredump_unmap	0
apc.enable_cli	1
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	20M
apc.mmap_file_mask	/tmp/apc.3iYCNd
apc.num_files_hint	1000
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	1024M
apc.slam_defense	1
apc.stat	0
apc.stat_ctime	0
apc.ttl	0
apc.use_request_time	1
apc.user_entries_hint	4096
apc.user_ttl	7200
apc.write_lock	1

[NiteWave]

But i still see 1 value. Is it the cause of my problem?

should not be possible.

maybe your site's traffic is idle ? if so, you can generate some traffic and test again. also, you can create a script to access apc.php for 100 or 1000 times, grep "Uptime" and "apc.mmap_file_mask" every time, should be able to see 2 values.