Hi, Need help on one problem.
After few days, Varnish suddenly shows many client_drop error. Then response very slowly. I have to restart Varnish to fix it. Vanish command as following: /usr/sbin/varnishd -P /var/run/varnish80.pid -a :80 -f /etc/varnish/varnish80.vcl -T 127.0.0.1:6080 -t 120 -w 1,1000,120 -u varnish -g varnish -i varnish80 -S /etc/varnish/secret -p thread_pool_add_delay 2 -p thread_pools 2 -p thread_pool_min 100 -p thread_pool_max 2000 -p session_linger 50 -p sess_workspace 65536 -p http_req_hdr_len 8192 -p http_gzip_support off -n varnish80 -s malloc,24G Below is the varnishstat result. client_conn 1050088 2.58 Client connections accepted *client_drop 481044 1.18 Connection dropped, no sess/wrk * client_req 53255991 130.93 Client requests received cache_hit 49915997 122.71 Cache hits cache_hitpass 0 0.00 Cache hits for pass cache_miss 3098734 7.62 Cache misses backend_conn 23622 0.06 Backend conn. success backend_unhealthy 0 0.00 Backend conn. not attempted backend_busy 0 0.00 Backend conn. too many backend_fail 49 0.00 Backend conn. failures backend_reuse 3076713 7.56 Backend conn. reuses backend_toolate 4640 0.01 Backend conn. was closed backend_recycle 3081374 7.58 Backend conn. recycles backend_retry 1858 0.00 Backend conn. retry fetch_head 63 0.00 Fetch head fetch_length 1122064 2.76 Fetch with Length fetch_chunked 1959269 4.82 Fetch chunked fetch_eof 0 0.00 Fetch EOF fetch_bad 0 0.00 Fetch had bad headers fetch_close 3641 0.01 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 0 0.00 Fetch no body (304) n_sess_mem 100000 . N struct sess_mem n_sess 99996 . N struct sess n_object 384255 . N struct object n_vampireobject 0 . N unresurrected objects n_objectcore 384362 . N struct objectcore n_objecthead 386502 . N struct objecthead n_waitinglist 22165 . N struct waitinglist n_vbc 15 . N struct vbc n_wrk 800 . N worker threads n_wrk_create 800 0.00 N worker threads created n_wrk_failed 0 0.00 N worker threads not created n_wrk_max 0 0.00 N worker threads limited n_wrk_lqueue 0 0.00 work request queue length n_wrk_queued 0 0.00 N queued work requests n_wrk_drop 0 0.00 N dropped work requests n_backend 10 . N backends n_expired 2700698 . N expired objects n_lru_nuked 0 . N LRU nuked objects n_lru_moved 6742713 . N LRU moved objects losthdr 0 0.00 HTTP header overflows n_objsendfile 0 0.00 Objects sent with sendfile n_objwrite 33131257 81.45 Objects sent with write n_objoverflow 0 0.00 Objects overflowing workspace s_sess 569070 1.40 Total Sessions s_req 53255991 130.93 Total Requests s_pipe 12 0.00 Total pipe s_pass 84 0.00 Total pass s_fetch 3085037 7.58 Total fetch s_hdrbytes 23233920070 57118.78 Total header bytes s_bodybytes 511406013002 1257251.76 Total body bytes sess_closed 268273 0.66 Session Closed sess_pipeline 0 0.00 Session Pipeline sess_readahead 0 0.00 Session Read Ahead sess_linger 52902973 130.06 Session Linger sess_herd 19131516 47.03 Session herd shm_records 2474975941 6084.54 SHM records shm_writes 80791017 198.62 SHM writes shm_flushes 0 0.00 SHM flushes due to overflow shm_cont 23501 0.06 SHM MTX contention shm_cycles 889 0.00 SHM cycles through buffer sms_nreq 154946 0.38 SMS allocator requests sms_nobj 0 . SMS outstanding allocations sms_nbytes 0 . SMS outstanding bytes sms_balloc 65340505 . SMS bytes allocated sms_bfree 65340505 . SMS bytes freed backend_req 3100325 7.62 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_gone 1 . N total gone 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 53113990 130.58 HCB Lookups without lock hcb_lock 2909158 7.15 HCB Lookups with lock hcb_insert 2909154 7.15 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 406765 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 1 . Loaded VMODs n_gzip 0 0.00 Gzip operations n_gunzip 0 0.00 Gunzip operations LCK.sms.creat 1 0.00 Created locks LCK.sms.destroy 0 0.00 Destroyed locks LCK.sms.locks 464838 1.14 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 13844221 34.03 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 1 0.00 Created locks LCK.hcb.destroy 0 0.00 Destroyed locks LCK.hcb.locks 5436356 13.36 Lock Operations LCK.hcb.colls 0 0.00 Collisions LCK.hcl.creat 0 0.00 Created locks LCK.hcl.destroy 0 0.00 Destroyed locks LCK.hcl.locks 0 0.00 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 165593 0.41 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 569072 1.40 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 1173472 2.88 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 1334044 3.28 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 1 0.00 Lock Operations LCK.herder.colls 0 0.00 Collisions LCK.wq.creat 1 0.00 Created locks LCK.wq.destroy 0 0.00 Destroyed locks LCK.wq.locks 39531997 97.19 Lock Operations LCK.wq.colls 0 0.00 Collisions LCK.objhdr.creat 2909259 7.15 Created locks LCK.objhdr.destroy 2522760 6.20 Destroyed locks LCK.objhdr.locks 217895431 535.68 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 6191913 15.22 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 3084953 7.58 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 135560 0.33 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 6191997 15.22 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 47327 0.12 Lock Operations LCK.vbe.colls 0 0.00 Collisions LCK.backend.creat 10 0.00 Created locks LCK.backend.destroy 0 0.00 Destroyed locks LCK.backend.locks 6233731 15.33 Lock Operations LCK.backend.colls 0 0.00 Collisions SMA.s0.c_req 6321249 15.54 Allocator requests SMA.s0.c_fail 0 0.00 Allocator failures SMA.s0.c_bytes 300614422863 739037.09 Bytes allocated SMA.s0.c_freed 289845281665 712562.00 Bytes freed SMA.s0.g_alloc 768495 . Allocations outstanding SMA.s0.g_bytes 10769141198 . Bytes outstanding SMA.s0.g_space 15000662578 . Bytes available SMA.Transient.c_req 3656 0.01 Allocator requests SMA.Transient.c_fail 0 0.00 Allocator failures SMA.Transient.c_bytes 43886078 107.89 Bytes allocated SMA.Transient.c_freed 43882627 107.88 Bytes freed SMA.Transient.g_alloc 4 . Allocations outstanding SMA.Transient.g_bytes 3451 . Bytes outstanding SMA.Transient.g_space 0 . Bytes available VBE.rdsmetadata(10.150.16.2,,80).vcls 1 . VCL references VBE.rdsmetadata(10.150.16.2,,80).happy 0 . Happy health probes Thanks, Lei
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