Varnish 4 Performance Issues
Junaid Mukhtar
junaid.mukhtar at gmail.com
Thu Sep 20 14:57:31 UTC 2018
This is what we get in varnishhist
280_
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230_ |
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180_ |
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130_ |||
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80_ ||||||
|||||| #
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||||||| # ###
||||||||| ##### #
30_
||||||||| ########
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#########
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###########
|||||||||||| ## #
############# #
+---------------------+---------------------+---------------------+---------------------+---------------------+---------------------+---------------------+---------------------+---------------------
|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 <junaid.mukhtar at gmail.com>
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 <dridi at varni.sh> wrote:
>
>> On Thu, Sep 20, 2018 at 4:14 PM Junaid Mukhtar <junaid.mukhtar at gmail.com>
>> 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
>>
>
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