The tests were performed by modifying the set method like this:
public static function set($key, $item, $exp = 60) {
$benchmark = Profiler::start ('Memory', 'Set: '. $key);
$return = self::$instance-set ($key, $item, $exp);
Profiler::stop
And here is strace
...
0.85 [28b4f1ab] gettimeofday({1667458660, 1681273911}, NULL)
= 0 0.13
0.000202 [28b5f2a3] write(9, set
b5e03d478da6b7b8e61095fec4eb0..., 8196) = 8196 0.38
0.91 [28b5f2a3] write(9, pr.parent_id = p.parent_id
(1)\;s..., 1360) = 1360 0.23
sorry my bad full strace is:
0.85 [28b4f1ab] gettimeofday({1667458660, 1681273911}, NULL)
= 0 0.13
0.000202 [28b5f2a3] write(9, set
b5e03d478da6b7b8e61095fec4eb0..., 8196) = 8196 0.38
0.91 [28b5f2a3] write(9, pr.parent_id = p.parent_id
(1)\;s..., 1360) = 1360
What about memcached? Is it running on localhost or over the network?
Any chance you could get an strace from the memcached side? Have your test
app talk to a separate test instance or something.
Is it exactly or close to 0.10s each time? That's suspicious.
On Mon, 1 Mar 2010, Chaosty wrote:
It runs on the same server, php memcached connects by 127.0.0.1 to it.
it close but not the same. i did kill and run clean memcached server,
each time it was close to 0.1 sec.
I will do strace for memcached later and post the results.
On Mar 2, 3:50 am, dormando dorma...@rydia.net wrote:
What
Chaosty wrote:
It runs on the same server, php memcached connects by 127.0.0.1 to it.
it close but not the same. i did kill and run clean memcached server,
each time it was close to 0.1 sec.
In that case, I totally agree this is suspicious.
Just to toss out another idea, it sounds like
i would agree but trace shows delay:
this one by truss (freebsd strace)
76982: 2.532011750 0.099864927 poll({9/POLLIN},1,-1) = 1 (0x1) it
tooks 0.099seconds
and this one by strace
0.61 [28b09d6f] poll([{fd=574240058, events=POLLIN|POLLPRI|
POLLRDNORM|POLLWRBAND|POLLERR|POLLNVAL|0x6000}], 1,
Hi,
How to check the integrity of memcached cluster ? If not complete, we can
add the lack immediately.
Best Regards,
Jumping Qu
--
Don't tell me how many enemies we have, but where they are!
(ADV:Perl -- It's like Java, only it lets you deliver on time and under
budget.)
