varnish and ram size

shahab bakhtiyari shahab371 at gmail.com
Wed May 2 16:45:18 CEST 2012


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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