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POHigh # of N expired objects. Why? - (inside is my varnishstat and default.vcl)
 

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  1. POHigh # of N expired objects. Why? - (inside is my varnishstat and default.vcl)
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    <p>I have apache2 with Varnich 2 running. My prob is that even though my cache-control is set to 1 year, varnish still have a load of N expired objects <strong>1971</strong>. Here's my default.vcl it shows my setting any tips?:</p> <pre><code>backend apache { .host = "127.0.0.1"; .port = "8080"; } sub vcl_recv { if (req.http.Accept-Encoding) { if (req.url ~ "\.(jpg|png|gif|gz|tgz|bz2|tbz|mp3|ogg)$") { # No point in compressing these remove req.http.Accept-Encoding; } elsif (req.http.Accept-Encoding ~ "gzip") { set req.http.Accept-Encoding = "gzip"; } elsif (req.http.Accept-Encoding ~ "deflate") { set req.http.Accept-Encoding = "deflate"; } else { # unkown algorithm remove req.http.Accept-Encoding; } } if (req.url ~ "\.(ico|png|gif|jpg|swf|css|js)$") { return(lookup); } } ## Fetch sub vcl_fetch { # strip the cookie before the image is inserted into cache. if (req.url ~ "\.(ico|png|gif|jpg|swf|css|js)$") { unset beresp.http.set-cookie; } ## Remove X-Forwarded-For header if exists. remove req.http.X-Forwarded-For; ## insert client IP address as X-Forwarded-For. set req.http.X-Forwarded-For = req.http.rlnclientipaddr; ## Deliver the content return(deliver); } ## Deliver sub vcl_deliver { ## Clean header remove resp.http.X-Varnish; remove resp.http.Via; remove resp.http.Age; remove resp.http.X-Powered-By; if (obj.hits &gt; 0) { set resp.http.X-Cache = "HIT"; } else { set resp.http.X-Cache = "MISS"; } } </code></pre> <p>Varnishstat, this is my output:</p> <pre><code>client_conn 4165 0.26 Client connections accepted client_drop 1 0.00 Connection dropped, no sess/wrk client_req 5036 0.31 Client requests received cache_hit 1235 0.08 Cache hits cache_hitpass 0 0.00 Cache hits for pass cache_miss 2329 0.14 Cache misses backend_conn 1359 0.08 Backend conn. success backend_unhealthy 0 0.00 Backend conn. not attempted backend_busy 0 0.00 Backend conn. too many backend_fail 0 0.00 Backend conn. failures backend_reuse 2442 0.15 Backend conn. reuses backend_toolate 1223 0.08 Backend conn. was closed backend_recycle 3666 0.23 Backend conn. recycles backend_unused 0 0.00 Backend conn. unused fetch_head 0 0.00 Fetch head fetch_length 3665 0.23 Fetch with Length fetch_chunked 51 0.00 Fetch chunked fetch_eof 0 0.00 Fetch EOF fetch_bad 0 0.00 Fetch had bad headers fetch_close 67 0.00 Fetch wanted close fetch_oldhttp 0 0.00 Fetch pre HTTP/1.1 closed fetch_zero 15 0.00 Fetch zero len fetch_failed 0 0.00 Fetch failed n_sess_mem 30 . N struct sess_mem n_sess 0 . N struct sess n_object 314 . N struct object n_vampireobject 0 . N unresurrected objects n_objectcore 318 . N struct objectcore n_objecthead 361 . N struct objecthead n_smf 0 . N struct smf n_smf_frag 0 . N small free smf n_smf_large 0 . N large free smf n_vbe_conn 1 . N struct vbe_conn n_wrk 10 . N worker threads n_wrk_create 10 0.00 N worker threads created n_wrk_failed 0 0.00 N worker threads not created n_wrk_max 567851 35.17 N worker threads limited n_wrk_queue 0 0.00 N queued work requests n_wrk_overflow 37 0.00 N overflowed work requests n_wrk_drop 4 0.00 N dropped work requests n_backend 1 . N backends n_expired 1971 . N expired objects n_lru_nuked 0 . N LRU nuked objects n_lru_saved 0 . N LRU saved objects n_lru_moved 1211 . N LRU moved objects n_deathrow 0 . N objects on deathrow losthdr 0 0.00 HTTP header overflows n_objsendfile 0 0.00 Objects sent with sendfile n_objwrite 4810 0.30 Objects sent with write n_objoverflow 0 0.00 Objects overflowing workspace s_sess 4164 0.26 Total Sessions s_req 5036 0.31 Total Requests s_pipe 0 0.00 Total pipe s_pass 1472 0.09 Total pass s_fetch 3798 0.24 Total fetch s_hdrbytes 1925358 119.25 Total header bytes s_bodybytes 111698308 6918.45 Total body bytes sess_closed 2172 0.13 Session Closed sess_pipeline 0 0.00 Session Pipeline sess_readahead 0 0.00 Session Read Ahead sess_linger 3290 0.20 Session Linger sess_herd 3093 0.19 Session herd shm_records 343107 21.25 SHM records shm_writes 40917 2.53 SHM writes shm_flushes 0 0.00 SHM flushes due to overflow shm_cont 3 0.00 SHM MTX contention shm_cycles 0 0.00 SHM cycles through buffer sm_nreq 0 0.00 allocator requests sm_nobj 0 . outstanding allocations sm_balloc 0 . bytes allocated sm_bfree 0 . bytes free sma_nreq 6015 0.37 SMA allocator requests sma_nobj 627 . SMA outstanding allocations sma_nbytes 4035862 . SMA outstanding bytes sma_balloc 34755299 . SMA bytes allocated sma_bfree 30719437 . SMA bytes free sms_nreq 3 0.00 SMS allocator requests sms_nobj 0 . SMS outstanding allocations sms_nbytes 0 . SMS outstanding bytes sms_balloc 1464 . SMS bytes allocated sms_bfree 1464 . SMS bytes freed backend_req 3801 0.24 Backend requests made n_vcl 1 0.00 N vcl total n_vcl_avail 1 0.00 N vcl available n_vcl_discard 0 0.00 N vcl discarded n_purge 1 . N total active purges n_purge_add 1 0.00 N new purges added n_purge_retire 0 0.00 N old purges deleted n_purge_obj_test 0 0.00 N objects tested n_purge_re_test 0 0.00 N regexps tested against n_purge_dups 0 0.00 N duplicate purges removed hcb_nolock 1245 0.08 HCB Lookups without lock hcb_lock 0 0.00 HCB Lookups with lock hcb_insert 2319 0.14 HCB Inserts esi_parse 0 0.00 Objects ESI parsed (unlock) esi_errors 0 0.00 ESI parse errors (unlock) accept_fail 0 0.00 Accept failures client_drop_late 3 0.00 Connection dropped late uptime 16145 1.00 Client uptime </code></pre> <p>If this helps, this is how I set cache-control in my apache2 conf:</p> <pre><code>&lt;FilesMatch "\.(ico|pdf|gif|jpg|jpeg|png|swf|js|css)$"&gt; ExpiresActive On ExpiresDefault A31556926 Header unset ETag FileETag None &lt;/FilesMatch&gt; </code></pre> <p>Can't figure out why my N expired objects is soo high?</p>
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      1. POHigh # of N expired objects. Why? - (inside is my varnishstat and default.vcl)
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