*Output of varnishadm param.show:* acceptor_sleep_decay 0.900000 [] acceptor_sleep_incr 0.001000 [s] acceptor_sleep_max 0.050000 [s] auto_restart on [bool] ban_dups on [bool] ban_lurker_sleep 0.010000 [s] between_bytes_timeout 60.000000 [s] cc_command "exec gcc -std=gnu99 -g -O2 -pthread -fpic -shared -Wl,-x -o %o %s" cli_buffer 8192 [bytes] cli_timeout 10 [seconds] clock_skew 10 [s] connect_timeout 0.700000 [s] critbit_cooloff 180.000000 [s] default_grace 10.000000 [seconds] default_keep 0.000000 [seconds] default_ttl 120.000000 [seconds] diag_bitmap 0x0 [bitmap] esi_syntax 0 [bitmap] expiry_sleep 1.000000 [seconds] fetch_chunksize 128 [kilobytes] fetch_maxchunksize 262144 [kilobytes] first_byte_timeout 60.000000 [s] group nogroup (65534) gzip_level 6 [] gzip_memlevel 8 [] gzip_stack_buffer 32768 [Bytes] gzip_tmp_space 0 [] gzip_window 15 [] http_gzip_support on [bool] http_max_hdr 64 [header lines] http_range_support on [bool] http_req_hdr_len 8192 [bytes] http_req_size 32768 [bytes] http_resp_hdr_len 8192 [bytes] http_resp_size 32768 [bytes] listen_address 0.0.0.0:80 listen_depth 1024 [connections] log_hashstring on [bool] log_local_address off [bool] lru_interval 2 [seconds] max_esi_depth 5 [levels] max_restarts 4 [restarts] nuke_limit 50 [allocations] ping_interval 3 [seconds] pipe_timeout 60 [seconds] prefer_ipv6 off [bool] queue_max 100 [%] rush_exponent 3 [requests per request] saintmode_threshold 10 [objects] send_timeout 60 [seconds] sess_timeout 5 [seconds] sess_workspace 65536 [bytes] session_linger 50 [ms] session_max 100000 [sessions] shm_reclen 255 [bytes] shm_workspace 8192 [bytes] shortlived 10.000000 [s] syslog_cli_traffic on [bool] thread_pool_add_delay 2 [milliseconds] thread_pool_add_threshold 2 [requests] thread_pool_fail_delay 200 [milliseconds] thread_pool_max 2048 [threads] thread_pool_min 1 [threads] thread_pool_purge_delay 1000 [milliseconds] thread_pool_stack unlimited [bytes] thread_pool_timeout 10 [seconds] thread_pool_workspace 65536 [bytes] thread_pools 2 [pools] thread_stats_rate 10 [requests] user nobody (65534) vcc_err_unref on [bool] vcl_dir /etc/varnish vcl_trace off [bool] vmod_dir /usr/lib/varnish/vmods waiter default (epoll, poll) * * *Output of varnishstat -1:*
client_conn 1164 1.23 Client connections accepted client_drop 0 0.00 Connection dropped, no sess/wrk client_req 1164 1.23 Client requests received cache_hit 524 0.56 Cache hits cache_hitpass 0 0.00 Cache hits for pass cache_miss 98 0.10 Cache misses backend_conn 546 0.58 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 94 0.10 Backend conn. reuses backend_toolate 3 0.00 Backend conn. was closed backend_recycle 97 0.10 Backend conn. recycles backend_retry 0 0.00 Backend conn. retry fetch_head 0 0.00 Fetch head fetch_length 563 0.60 Fetch with Length fetch_chunked 14 0.01 Fetch chunked fetch_eof 0 0.00 Fetch EOF fetch_bad 0 0.00 Fetch had bad headers fetch_close 43 0.05 Fetch wanted close fetch_oldhttp 0 0.00 Fetch pre HTTP/1.1 closed fetch_zero 0 0.00 Fetch zero len fetch_failed 0 0.00 Fetch failed fetch_1xx 0 0.00 Fetch no body (1xx) fetch_204 0 0.00 Fetch no body (204) fetch_304 19 0.02 Fetch no body (304) n_sess_mem 17 . N struct sess_mem n_sess 0 . N struct sess n_object 69 . N struct object n_vampireobject 0 . N unresurrected objects n_objectcore 71 . N struct objectcore n_objecthead 71 . N struct objecthead n_waitinglist 24 . N struct waitinglist n_vbc 0 . N struct vbc n_wrk 2 . N worker threads n_wrk_create 24 0.03 N worker threads created n_wrk_failed 0 0.00 N worker threads not created n_wrk_max 33 0.03 N worker threads limited n_wrk_lqueue 0 0.00 work request queue length n_wrk_queued 152 0.16 N queued work requests n_wrk_drop 0 0.00 N dropped work requests n_backend 1 . N backends n_expired 29 . N expired objects n_lru_nuked 0 . N LRU nuked objects n_lru_moved 458 . N LRU moved objects losthdr 0 0.00 HTTP header overflows n_objsendfile 0 0.00 Objects sent with sendfile n_objwrite 1135 1.20 Objects sent with write n_objoverflow 0 0.00 Objects overflowing workspace s_sess 1164 1.23 Total Sessions s_req 1164 1.23 Total Requests s_pipe 0 0.00 Total pipe s_pass 542 0.57 Total pass s_fetch 639 0.68 Total fetch s_hdrbytes 437246 463.18 Total header bytes s_bodybytes 14474608 15333.27 Total body bytes sess_closed 1164 1.23 Session Closed sess_pipeline 0 0.00 Session Pipeline sess_readahead 0 0.00 Session Read Ahead sess_linger 0 0.00 Session Linger sess_herd 0 0.00 Session herd shm_records 85020 90.06 SHM records shm_writes 6648 7.04 SHM writes shm_flushes 0 0.00 SHM flushes due to overflow shm_cont 8 0.01 SHM MTX contention shm_cycles 0 0.00 SHM cycles through buffer sms_nreq 1 0.00 SMS allocator requests sms_nobj 0 . SMS outstanding allocations sms_nbytes 0 . SMS outstanding bytes sms_balloc 419 . SMS bytes allocated sms_bfree 419 . SMS bytes freed backend_req 640 0.68 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_ban 1 . N total active bans n_ban_add 1 0.00 N new bans added n_ban_retire 0 0.00 N old bans deleted n_ban_obj_test 0 0.00 N objects tested n_ban_re_test 0 0.00 N regexps tested against n_ban_dups 0 0.00 N duplicate bans removed hcb_nolock 0 0.00 HCB Lookups without lock hcb_lock 0 0.00 HCB Lookups with lock hcb_insert 0 0.00 HCB Inserts esi_errors 0 0.00 ESI parse errors (unlock) esi_warnings 0 0.00 ESI parse warnings (unlock) accept_fail 0 0.00 Accept failures client_drop_late 0 0.00 Connection dropped late uptime 944 1.00 Client uptime dir_dns_lookups 0 0.00 DNS director lookups dir_dns_failed 0 0.00 DNS director failed lookups dir_dns_hit 0 0.00 DNS director cached lookups hit dir_dns_cache_full 0 0.00 DNS director full dnscache vmods 0 . Loaded VMODs n_gzip 0 0.00 Gzip operations n_gunzip 521 0.55 Gunzip operations LCK.sms.creat 1 0.00 Created locks LCK.sms.destroy 0 0.00 Destroyed locks LCK.sms.locks 3 0.00 Lock Operations LCK.sms.colls 0 0.00 Collisions LCK.smp.creat 0 0.00 Created locks LCK.smp.destroy 0 0.00 Destroyed locks LCK.smp.locks 0 0.00 Lock Operations LCK.smp.colls 0 0.00 Collisions LCK.sma.creat 2 0.00 Created locks LCK.sma.destroy 0 0.00 Destroyed locks LCK.sma.locks 2922 3.10 Lock Operations LCK.sma.colls 0 0.00 Collisions LCK.smf.creat 0 0.00 Created locks LCK.smf.destroy 0 0.00 Destroyed locks LCK.smf.locks 0 0.00 Lock Operations LCK.smf.colls 0 0.00 Collisions LCK.hsl.creat 0 0.00 Created locks LCK.hsl.destroy 0 0.00 Destroyed locks LCK.hsl.locks 0 0.00 Lock Operations LCK.hsl.colls 0 0.00 Collisions LCK.hcb.creat 0 0.00 Created locks LCK.hcb.destroy 0 0.00 Destroyed locks LCK.hcb.locks 0 0.00 Lock Operations LCK.hcb.colls 0 0.00 Collisions LCK.hcl.creat 16383 17.35 Created locks LCK.hcl.destroy 0 0.00 Destroyed locks LCK.hcl.locks 1175 1.24 Lock Operations LCK.hcl.colls 0 0.00 Collisions LCK.vcl.creat 1 0.00 Created locks LCK.vcl.destroy 0 0.00 Destroyed locks LCK.vcl.locks 48 0.05 Lock Operations LCK.vcl.colls 0 0.00 Collisions LCK.stat.creat 1 0.00 Created locks LCK.stat.destroy 0 0.00 Destroyed locks LCK.stat.locks 17 0.02 Lock Operations LCK.stat.colls 0 0.00 Collisions LCK.sessmem.creat 1 0.00 Created locks LCK.sessmem.destroy 0 0.00 Destroyed locks LCK.sessmem.locks 1270 1.35 Lock Operations LCK.sessmem.colls 0 0.00 Collisions LCK.wstat.creat 1 0.00 Created locks LCK.wstat.destroy 0 0.00 Destroyed locks LCK.wstat.locks 2858 3.03 Lock Operations LCK.wstat.colls 0 0.00 Collisions LCK.herder.creat 1 0.00 Created locks LCK.herder.destroy 0 0.00 Destroyed locks LCK.herder.locks 148 0.16 Lock Operations LCK.herder.colls 0 0.00 Collisions LCK.wq.creat 2 0.00 Created locks LCK.wq.destroy 0 0.00 Destroyed locks LCK.wq.locks 4200 4.45 Lock Operations LCK.wq.colls 0 0.00 Collisions LCK.objhdr.creat 119 0.13 Created locks LCK.objhdr.destroy 48 0.05 Destroyed locks LCK.objhdr.locks 1469 1.56 Lock Operations LCK.objhdr.colls 0 0.00 Collisions LCK.exp.creat 1 0.00 Created locks LCK.exp.destroy 0 0.00 Destroyed locks LCK.exp.locks 1072 1.14 Lock Operations LCK.exp.colls 0 0.00 Collisions LCK.lru.creat 2 0.00 Created locks LCK.lru.destroy 0 0.00 Destroyed locks LCK.lru.locks 98 0.10 Lock Operations LCK.lru.colls 0 0.00 Collisions LCK.cli.creat 1 0.00 Created locks LCK.cli.destroy 0 0.00 Destroyed locks LCK.cli.locks 327 0.35 Lock Operations LCK.cli.colls 0 0.00 Collisions LCK.ban.creat 1 0.00 Created locks LCK.ban.destroy 0 0.00 Destroyed locks LCK.ban.locks 1073 1.14 Lock Operations LCK.ban.colls 0 0.00 Collisions LCK.vbp.creat 1 0.00 Created locks LCK.vbp.destroy 0 0.00 Destroyed locks LCK.vbp.locks 0 0.00 Lock Operations LCK.vbp.colls 0 0.00 Collisions LCK.vbe.creat 1 0.00 Created locks LCK.vbe.destroy 0 0.00 Destroyed locks LCK.vbe.locks 1092 1.16 Lock Operations LCK.vbe.colls 0 0.00 Collisions LCK.backend.creat 1 0.00 Created locks LCK.backend.destroy 0 0.00 Destroyed locks LCK.backend.locks 1895 2.01 Lock Operations LCK.backend.colls 0 0.00 Collisions SMA.s0.c_req 172 0.18 Allocator requests SMA.s0.c_fail 0 0.00 Allocator failures SMA.s0.c_bytes 8694705 9210.49 Bytes allocated SMA.s0.c_freed 6874254 7282.05 Bytes freed SMA.s0.g_alloc 137 . Allocations outstanding SMA.s0.g_bytes 1820451 . Bytes outstanding SMA.s0.g_space 1071921373 . Bytes available SMA.Transient.c_req 1089 1.15 Allocator requests SMA.Transient.c_fail 0 0.00 Allocator failures SMA.Transient.c_bytes 64465868 68290.11 Bytes allocated SMA.Transient.c_freed 64465868 68290.11 Bytes freed SMA.Transient.g_alloc 0 . Allocations outstanding SMA.Transient.g_bytes 0 . Bytes outstanding SMA.Transient.g_space 0 . Bytes available VBE.default(127.0.0.1,,8081).vcls 1 . VCL references VBE.default(127.0.0.1,,8081).happy 0 . Happy health probes * * Thanks in advance. On Wed, Mar 28, 2012 at 3:45 AM, Stig Bakken <[email protected]> wrote: > On Wed, Mar 28, 2012 at 1:31 AM, Zachary Alex Stern < > [email protected]> wrote: > >> Hey there, >> >> We have a lot of websites (perhaps 15-20) running on apache, behind a >> varnish cache. >> >> One of our sites seems to experience random slowdowns when varnish is >> enabled. It will take between 5-20 seconds to load, fairly frequently. Our >> other sites all seem unaffected. >> >> When I disable varnish and have apache listen on port 80, the problem >> disappears entirely. >> >> Any thoughts? >> >> Here's our vcl.conf if it helps: http://pastebin.com/XPUvSPeu >> > > For this kind of problem, it is very useful if you post the output of > "varnishadm param.show" and "varnishstat -1" as well. > > - Stig > >
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