I totally agree about that. what we have figured out is that during the steady periods of performance tests it run absolutely fine; but as soon as we spike up the traffic (double the normal peak) performance degrades dramatically.
-------- Regards, Junaid On Tue, Sep 25, 2018 at 5:17 PM Guillaume Quintard < [email protected]> wrote: > without the vcl (and/or logs, but I'm assuming those are even more > confidential), that's a tough cookie to debug > -- > Guillaume Quintard > > > On Mon, Sep 24, 2018 at 10:35 AM Junaid Mukhtar <[email protected]> > wrote: > >> Hi >> >> Apologies but I am not allowed to share the VCL. If there's any other >> thing like stats etc that might be helpful then do let me know >> >> -------- >> Regards, >> Junaid >> >> >> On Fri, Sep 21, 2018 at 4:15 PM Guillaume Quintard < >> [email protected]> wrote: >> >>> would you be able to share your vcl? >>> -- >>> Guillaume Quintard >>> >>> >>> On Fri, Sep 21, 2018 at 4:54 PM Junaid Mukhtar <[email protected]> >>> wrote: >>> >>>> Any help guys; this is really getting to us..... >>>> >>>> -------- >>>> Regards, >>>> Junaid >>>> >>>> >>>> On Thu, Sep 20, 2018 at 3:57 PM Junaid Mukhtar < >>>> [email protected]> wrote: >>>> >>>>> >>>>> This is what we get in varnishhist >>>>> >>>>> 280_ >>>>> >>>>> >>>>> >>>>> | >>>>> 230_ | >>>>> | >>>>> | >>>>> | >>>>> | >>>>> 180_ | >>>>> || >>>>> || >>>>> ||| >>>>> ||| >>>>> 130_ ||| >>>>> ||| >>>>> |||||| >>>>> |||||| >>>>> |||||| >>>>> 80_ |||||| >>>>> >>>>> |||||| # >>>>> >>>>> |||||| ### >>>>> >>>>> ||||||| # ### >>>>> >>>>> ||||||||| ##### >>>>> # >>>>> 30_ >>>>> ||||||||| >>>>> ######## >>>>> >>>>> ||||||||| >>>>> ######### >>>>> >>>>> |||||||||| >>>>> ########### >>>>> >>>>> |||||||||||| ## # >>>>> ############# # >>>>> >>>>> +---------------------+---------------------+---------------------+---------------------+---------------------+---------------------+---------------------+---------------------+--------------------- >>>>> |1e-6 |1e-5 |1e-4 >>>>> |1e-3 |1e-2 |1e-1 >>>>> |1e0 |1e1 |1e2 >>>>> -------- >>>>> Regards, >>>>> Junaid >>>>> >>>>> >>>>> On Thu, Sep 20, 2018 at 3:54 PM Junaid Mukhtar < >>>>> [email protected]> wrote: >>>>> >>>>>> Below is the output; all of them are default except i was trying to >>>>>> up the threads_pool to 4 but didn't feel any imporvement in performance >>>>>> degradation >>>>>> >>>>>> accept_filter off [bool] (default) >>>>>> acceptor_sleep_decay 0.9 (default) >>>>>> acceptor_sleep_incr 0.000 [seconds] (default) >>>>>> acceptor_sleep_max 0.050 [seconds] (default) >>>>>> auto_restart on [bool] (default) >>>>>> backend_idle_timeout 60.000 [seconds] (default) >>>>>> ban_dups on [bool] (default) >>>>>> ban_lurker_age 60.000 [seconds] (default) >>>>>> ban_lurker_batch 1000 (default) >>>>>> ban_lurker_sleep 0.010 [seconds] (default) >>>>>> between_bytes_timeout 60.000 [seconds] (default) >>>>>> cc_command "exec gcc -std=gnu99 -O2 -g >>>>>> -Wp,-D_FORTIFY_SOURCE=0 -Wall -Werror -pthread -fpic -shared -Wl,-x -o %o >>>>>> %s" (default) >>>>>> cli_buffer 8k [bytes] (default) >>>>>> cli_limit 48k [bytes] (default) >>>>>> cli_timeout 60.000 [seconds] (default) >>>>>> clock_skew 10 [seconds] (default) >>>>>> clock_step 1.000 [seconds] (default) >>>>>> connect_timeout 3.500 [seconds] (default) >>>>>> critbit_cooloff 180.000 [seconds] (default) >>>>>> debug none (default) >>>>>> default_grace 10.000 [seconds] (default) >>>>>> default_keep 0.000 [seconds] (default) >>>>>> default_ttl 120.000 [seconds] (default) >>>>>> feature none (default) >>>>>> fetch_chunksize 16k [bytes] (default) >>>>>> fetch_maxchunksize 0.25G [bytes] (default) >>>>>> first_byte_timeout 60.000 [seconds] (default) >>>>>> gzip_buffer 32k [bytes] (default) >>>>>> gzip_level 6 (default) >>>>>> gzip_memlevel 8 (default) >>>>>> http_gzip_support on [bool] (default) >>>>>> http_max_hdr 64 [header lines] (default) >>>>>> http_range_support on [bool] (default) >>>>>> http_req_hdr_len 8k [bytes] (default) >>>>>> http_req_size 32k [bytes] (default) >>>>>> http_resp_hdr_len 8k [bytes] (default) >>>>>> http_resp_size 32k [bytes] (default) >>>>>> idle_send_timeout 60.000 [seconds] (default) >>>>>> listen_depth 1024 [connections] (default) >>>>>> lru_interval 2.000 [seconds] (default) >>>>>> max_esi_depth 5 [levels] (default) >>>>>> max_restarts 4 [restarts] (default) >>>>>> max_retries 4 [retries] (default) >>>>>> nuke_limit 50 [allocations] (default) >>>>>> pcre_match_limit 10000 (default) >>>>>> pcre_match_limit_recursion 20 (default) >>>>>> ping_interval 3 [seconds] (default) >>>>>> pipe_timeout 60.000 [seconds] (default) >>>>>> pool_req 10,100,10 (default) >>>>>> pool_sess 10,100,10 (default) >>>>>> pool_vbo 10,100,10 (default) >>>>>> prefer_ipv6 off [bool] (default) >>>>>> rush_exponent 3 [requests per request] (default) >>>>>> send_timeout 600.000 [seconds] (default) >>>>>> session_max 100000 [sessions] (default) >>>>>> shm_reclen 255b [bytes] (default) >>>>>> shortlived 10.000 [seconds] (default) >>>>>> sigsegv_handler on [bool] (default) >>>>>> syslog_cli_traffic on [bool] (default) >>>>>> tcp_fastopen off [bool] (default) >>>>>> tcp_keepalive_intvl 75.000 [seconds] (default) >>>>>> tcp_keepalive_probes 9 [probes] (default) >>>>>> tcp_keepalive_time 7200.000 [seconds] (default) >>>>>> thread_pool_add_delay 0.000 [seconds] (default) >>>>>> thread_pool_destroy_delay 1.000 [seconds] (default) >>>>>> thread_pool_fail_delay 0.200 [seconds] (default) >>>>>> thread_pool_max 5000 [threads] (default) >>>>>> thread_pool_min 100 [threads] (default) >>>>>> thread_pool_reserve 0 [threads] (default) >>>>>> thread_pool_stack 48k [bytes] (default) >>>>>> thread_pool_timeout 300.000 [seconds] (default) >>>>>> thread_pools 2 [pools] (default) >>>>>> thread_queue_limit 20 (default) >>>>>> thread_stats_rate 10 [requests] (default) >>>>>> timeout_idle 5.000 [seconds] (default) >>>>>> timeout_linger 0.050 [seconds] (default) >>>>>> vcc_allow_inline_c off [bool] (default) >>>>>> vcc_err_unref on [bool] (default) >>>>>> vcc_unsafe_path on [bool] (default) >>>>>> vcl_cooldown 600.000 [seconds] (default) >>>>>> vcl_dir /etc/varnish (default) >>>>>> vmod_dir /usr/lib64/varnish/vmods (default) >>>>>> vsl_buffer 4k [bytes] (default) >>>>>> vsl_mask -VCL_trace,-WorkThread,-Hash,-VfpAcct >>>>>> (default) >>>>>> vsl_reclen 255b [bytes] (default) >>>>>> vsl_space 80M [bytes] (default) >>>>>> vsm_free_cooldown 60.000 [seconds] (default) >>>>>> vsm_space 1M [bytes] (default) >>>>>> workspace_backend 64k [bytes] (default) >>>>>> workspace_client 64k [bytes] (default) >>>>>> workspace_session 0.50k [bytes] (default) >>>>>> workspace_thread 2k [bytes] (default) >>>>>> >>>>>> >>>>>> -------- >>>>>> Regards, >>>>>> Junaid >>>>>> >>>>>> >>>>>> On Thu, Sep 20, 2018 at 3:37 PM Dridi Boukelmoune <[email protected]> >>>>>> wrote: >>>>>> >>>>>>> On Thu, Sep 20, 2018 at 4:14 PM Junaid Mukhtar < >>>>>>> [email protected]> wrote: >>>>>>> > >>>>>>> > Hi >>>>>>> > >>>>>>> > we are in middle of upgrading from varnish 3.0.7 to varnish >>>>>>> 4.1.10; but unfortunately all of the response times in the performance >>>>>>> test >>>>>>> are indicating an increase of at least 100% >>>>>>> > >>>>>>> > We have analyzed the logs and everything but can't get around >>>>>>> this; the issue is not only for the non-cached pages but it's also >>>>>>> impacting the cached pages. We are also struggling to analyze it >>>>>>> further as >>>>>>> well, any guidenace as to what we can do in terms of putting debug >>>>>>> logging >>>>>>> in would be helpful. >>>>>>> > >>>>>>> > One of the areas we are considering is to output response times, >>>>>>> but it's proving difficult for me. Any suggestions >>>>>>> >>>>>>> Hello, >>>>>>> >>>>>>> What is the output of `varnishadm param.show` ? >>>>>>> >>>>>>> Dridi >>>>>>> >>>>>> _______________________________________________ >>>> varnish-misc mailing list >>>> [email protected] >>>> https://www.varnish-cache.org/lists/mailman/listinfo/varnish-misc >>>> >>>
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