varnish and ram size

shahab bakhtiyari shahab371 at gmail.com
Wed May 2 16:37:30 CEST 2012


On 2 May 2012 15:54, shahab bakhtiyari <shahab371 at gmail.com> wrote:

> Hi
>
> here you can see outputs  from  top, and varnishstat -1
>
> top:
> 12792 nobody    20   0 5639m 3.6g 3.4g S   13  94.3   2:01.63 varnishd
>
>
>
>
>
> root at varnish:~# varnishstat -1
> client_conn            259312       158.89 Client connections accepted
> client_drop                 0         0.00 Connection dropped, no sess/wrk
> client_req             259212       158.83 Client requests received
> cache_hit               33921        20.78 Cache hits
> cache_hitpass               0         0.00 Cache hits for pass
> cache_miss             225291       138.05 Cache misses
> backend_conn            43774        26.82 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          181617       111.28 Backend conn. reuses
> backend_toolate             0         0.00 Backend conn. was closed
> backend_recycle        181617       111.28 Backend conn. recycles
> backend_unused              0         0.00 Backend conn. unused
> fetch_head                  0         0.00 Fetch head
> fetch_length           225291       138.05 Fetch with Length
> fetch_chunked               0         0.00 Fetch chunked
> fetch_eof                   0         0.00 Fetch EOF
> fetch_bad                   0         0.00 Fetch had bad headers
> fetch_close                 0         0.00 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
> n_sess_mem                351          .   N struct sess_mem
> n_sess                    102          .   N struct sess
> n_object               220554          .   N struct object
> n_vampireobject             0          .   N unresurrected objects
> n_objectcore           220557          .   N struct objectcore
> n_objecthead           216397          .   N struct objecthead
> n_smf                  441172          .   N struct smf
> n_smf_frag                  0          .   N small free smf
> n_smf_large                 2          .   N large free smf
> n_vbe_conn                100          .   N struct vbe_conn
> n_wrk                     121          .   N worker threads
> n_wrk_create              169         0.10 N worker threads created
> n_wrk_failed                0         0.00 N worker threads not created
> n_wrk_max              951160       582.82 N worker threads limited
> n_wrk_queue                 0         0.00 N queued work requests
> n_wrk_overflow           2082         1.28 N overflowed work requests
> n_wrk_drop                  0         0.00 N dropped work requests
> n_backend                   1          .   N backends
> n_expired                4737          .   N expired objects
> n_lru_nuked                 0          .   N LRU nuked objects
> n_lru_saved                 0          .   N LRU saved objects
> n_lru_moved             26276          .   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             259207       158.83 Objects sent with write
> n_objoverflow               0         0.00 Objects overflowing workspace
> s_sess                 259212       158.83 Total Sessions
> s_req                  259212       158.83 Total Requests
> s_pipe                      0         0.00 Total pipe
> s_pass                      0         0.00 Total pass
> s_fetch                225291       138.05 Total fetch
> s_hdrbytes          119525246     73238.51 Total header bytes
> s_bodybytes        2748370979   1684050.84 Total body bytes
> sess_closed            259212       158.83 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          21397311     13111.10 SHM records
> shm_writes            1445766       885.89 SHM writes
> shm_flushes                27         0.02 SHM flushes due to overflow
> shm_cont                 9812         6.01 SHM MTX contention
> shm_cycles                  9         0.01 SHM cycles through buffer
> sm_nreq                450644       276.13 allocator requests
> sm_nobj                441170          .   outstanding allocations
> sm_balloc          3777261568          .   bytes allocated
> sm_bfree            743198720          .   bytes free
> sma_nreq                    0         0.00 SMA allocator requests
> sma_nobj                    0          .   SMA outstanding allocations
> sma_nbytes                  0          .   SMA outstanding bytes
> sma_balloc                  0          .   SMA bytes allocated
> sma_bfree                   0          .   SMA bytes free
> sms_nreq                    0         0.00 SMS allocator requests
> sms_nobj                    0          .   SMS outstanding allocations
> sms_nbytes                  0          .   SMS outstanding bytes
> sms_balloc                  0          .   SMS bytes allocated
> sms_bfree                   0          .   SMS bytes freed
> backend_req            225390       138.11 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                 2         0.00 N new purges added
> n_purge_retire              1         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             259312       158.89 HCB Lookups without lock
> hcb_lock               217430       133.23 HCB Lookups with lock
> hcb_insert             217428       133.23 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            0         0.00 Connection dropped late
> uptime                   1632         1.00 Client uptime
>
>
>
>
> On 2 May 2012 12:31, Tollef Fog Heen <tfheen at varnish-software.com> wrote:
>
>> ]] shahab bakhtiyari
>>
>> Hi,
>>
>> > what am I doing wrong? is there a way prohibit that or at least tell
>> > varnish not to use the whole cache?
>>
>> Please provide the output of varnishstat -1 when it's using more than
>> the allocated amount of resources and we might be able to figure out
>> what's wrong.
>>
>> --
>> Tollef Fog Heen
>> Technical lead, Varnish Software
>> t: +47 21 98 92 64
>>
>
>
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