Varnich Memory in 90% holding continously

Yiannis Karayiannidis yianniska at gmail.com
Fri Jul 15 00:19:12 CEST 2016


Hi all,
I've got a "strange problem" with varnish 4.1.3 with error 503 after a
backend response with 304

I believe my mistake is that i try to cache a URL for which the backend
send 304 response and that is something unallowed.

Is that correct?
If not was where is the problem?

Regards
Yiannis

p.s I do not have the same problem with varnish 4.0.2

The details from varnishlog

*   << Request  >> 721018
-   Begin          req 721017 rxreq
-   Timestamp      Start: 1468531337.961047 0.000000 0.000000
-   Timestamp      Req: 1468531337.961047 0.000000 0.000000
-   ReqStart       192.168.50.80 55518
-   ReqMethod      GET
-   ReqURL
/event/diff?id=707658&rev=925&country=ES&LANG=en&xfarm=2&_=1468531333090
-   ReqProtocol    HTTP/1.1
-   ReqHeader      Host: www.xxx.ge
-   ReqHeader      X-Forwarded-For: 192.168.55.145
-   ReqHeader      X-Forwarded-Proto: https
-   ReqHeader      Connection: close
-   ReqHeader      Accept: */*
-   ReqHeader      X-Requested-With: XMLHttpRequest
-   ReqHeader      User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64)
AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36
-   ReqHeader      Referer: https://www.xxx.ge/event/index/707658
-   ReqHeader      Accept-Encoding: gzip, deflate, sdch, br
-   ReqHeader      Accept-Language: en-US,en;q=0.8,el;q=0.6
-   ReqHeader      Cookie: __cfduid=d6091c5456123ad4d97ceda2ab91445248766;
LANG=en; walkthrough=1; LANG=en; _cb_ls=1;
optimizelyEndUserId=oeu1459345286386r0.9749153622397837;
optimizelySegments=%7B%225389070408%22%3A%22false%22%2C%225372042113%22%3A%22gc%22%2C%225391
-   ReqUnset       X-Forwarded-For: 192.168.55.145
-   ReqHeader      X-Forwarded-For: 192.168.55.145, 192.168.50.80
-   VCL_call       RECV
-   ReqUnset       Cookie: __cfduid=d6091c5456123ad4d97ceda2ab91445248766;
LANG=en; walkthrough=1; LANG=en; _cb_ls=1;
optimizelyEndUserId=oeu1459345286386r0.9749153622397837;
optimizelySegments=%7B%225389070408%22%3A%22false%22%2C%225372042113%22%3A%22gc%22%2C%225391
-   ReqHeader      Cookie: __cfduid=d6091c5456123ad4d97ceda2ab91445248766;
LANG=en; walkthrough=1; LANG=en; _cb_ls=1;
optimizelyEndUserId=oeu1459345286386r0.9749153622397837;
optimizelySegments=%7B%225389070408%22%3A%22false%22%2C%225372042113%22%3A%22gc%22%2C%225391
-   ReqURL         /event/diff?id=707658&rev=925&country=ES&LANG=en&xfarm=2
-   ReqUnset       Cookie: __cfduid=d6091c5456123ad4d97ceda2ab91445248766;
LANG=en; walkthrough=1; LANG=en; _cb_ls=1;
optimizelyEndUserId=oeu1459345286386r0.9749153622397837;
optimizelySegments=%7B%225389070408%22%3A%22false%22%2C%225372042113%22%3A%22gc%22%2C%225391
-   VCL_return     hash
-   ReqUnset       Accept-Encoding: gzip, deflate, sdch, br
-   ReqHeader      Accept-Encoding: gzip
-   VCL_call       HASH
-   ReqHeader      X-defHash:
/event/diff?id=707658&rev=925&country=ES&LANG=en&xfarm=2
-   ReqUnset       X-defHash:
/event/diff?id=707658&rev=925&country=ES&LANG=en&xfarm=2
-   ReqHeader      X-defHash:
/event/diff?id=707658&rev=925&country=ES&LANG=en&xfarm=2 + www.xxx.ge
-   VCL_return     lookup
-   VCL_call       MISS
-   VCL_return     fetch
-   Link           bereq 721019 fetch
-   Timestamp      Fetch: 1468531337.963143 0.002097 0.002097
-   Timestamp      Process: 1468531337.963165 0.002118 0.000021
-   RespHeader     Date: Thu, 14 Jul 2016 21:22:17 GMT
-   RespHeader     Server: Varnish
-   RespHeader     X-Varnish: 721018
-   RespProtocol   HTTP/1.1
-   RespStatus     503
-   RespReason     Service Unavailable
-   RespReason     Service Unavailable
-   VCL_call       SYNTH
-   RespHeader     Content-Type: text/html; charset=utf-8
-   RespHeader     Retry-After: 5
-   VCL_return     deliver
-   RespHeader     Content-Length: 280
-   Storage        malloc Transient
-   Debug          "RES_MODE 2"
-   RespHeader     Connection: close
-   Timestamp      Resp: 1468531337.963247 0.002200 0.000082
-   ReqAcct        1077 0 1077 205 280 485
-   End


*   << BeReq    >> 721019
-   Begin          bereq 721018 fetch
-   Timestamp      Start: 1468531337.961169 0.000000 0.000000
-   BereqMethod    GET
-   BereqURL       /event/diff?id=707658&rev=925&country=ES&LANG=en&xfarm=2&
-   BereqProtocol  HTTP/1.1
-   BereqHeader    Host: www.xxx.ge
-   BereqHeader    X-Forwarded-Proto: https
-   BereqHeader    Accept: */*
-   BereqHeader    X-Requested-With: XMLHttpRequest
-   BereqHeader    User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64)
AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36
-   BereqHeader    Referer: https://www.xxx.ge/event/index/707658
-   BereqHeader    Accept-Language: en-US,en;q=0.8,el;q=0.6
-   BereqHeader    X-Forwarded-For: 192.168.55.145, 172.16.50.80
-   BereqHeader    Accept-Encoding: gzip
-   BereqHeader    X-defHash:
/event/diff?id=707658&rev=925&country=ES&LANG=en&xfarm=2 + www.xxx.ge
-   BereqHeader    X-Varnish: 721019
-   VCL_call       BACKEND_FETCH
-   VCL_return     fetch
-   BackendOpen    28 boot.wb2_mob_stx_spo_gr 172.16.50.132 80 172.16.50.80
48508
-   BackendStart   192.168.50.132 80
-   Timestamp      Bereq: 1468531337.961247 0.000078 0.000078
-   Timestamp      Beresp: 1468531337.963066 0.001897 0.001819
-   BerespProtocol HTTP/1.1
-   BerespStatus   304
-   BerespReason   Not Modified
-   BerespHeader   Cache-Control: private
-   BerespHeader   Server: Microsoft-IIS/8.5
-   BerespHeader   Set-Cookie: LANG=en; expires=Fri, 14-Jul-2017 21:22:17
GMT; path=/; secure; HttpOnly
-   BerespHeader   X-AspNetMvc-Version: 5.2
-   BerespHeader   X-AspNet-Version: 4.0.30319
-   BerespHeader   X-Powered-By: ASP.NET
-   BerespHeader   X-Farm: 12
-   BerespHeader   Date: Thu, 14 Jul 2016 21:22:17 GMT
-   TTL            RFC 120 10 -1 1468531338 1468531338 1468531337 0 0
-   Error          304 response but not conditional fetch
-   BackendClose   28 boot.wb2_mob_stx_spo_gr
-   BereqAcct      574 0 574 293 0 293
-   End
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