[BUG] PURGE method with SMP dosnt play nice. 3.2 3.3 and trunk.

From: Eliezer Croitoru <eliezer_at_ngtech.co.il>
Date: Thu, 13 Dec 2012 22:15:49 +0200

While testing my storeID I found a small bug with SMP and memory_cache
While squid PURGE methods works fine with one basic process it will not
play well with SMP.

The test case is with and without storeID.
1. fetch url of a jpg img. result(tcp_miss)
2. fetch again to make sure it's served from cache. result (tcp_hit)
3. check the file on disk. result: exists on disk (the only file in cache)
4. squidclient -m PURGE url result:no errors
5. check logs. result: a purge was made
6. check disk object (UFS) result: dosnt exists.
7. fetch the url.
    result in logs:
   1355429182.213 5 192.168.10.100 TCP_MEM_HIT/200 5219 GET
http://i1.ytimg.com/vi/H-0OuRVCAK8/default.jpg - HIER_NONE/- image/jpeg

The next test was to change the settings into:
maximum_object_size_in_memory 1 Bytes

Which means no object will be cached in memory.

Then I did all the tests and now the result is:
1355429555.386 27 192.168.10.100 TCP_MISS/200 5220 GET
http://i1.ytimg.com/vi/H-0OuRVCAK8/default.jpg -
HIER_DIRECT/74.125.132.100 image

So the bug is in SMP with purge in mem_cache only!

I will file a bug in the Bugzilla.

This mail is just to make sure I am understood about the situation.

Thanks,
Eliezer

-- 
Eliezer Croitoru
https://www1.ngtech.co.il
sip:ngtech_at_sip2sip.info
IT consulting for Nonprofit organizations
eliezer <at> ngtech.co.il
Received on Thu Dec 13 2012 - 20:16:05 MST

This archive was generated by hypermail 2.2.0 : Fri Dec 14 2012 - 12:00:10 MST