varnish-bugs at varnish-cache
Sep 7, 2011, 6:18 AM
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#1012: 503 error on 200 backend response: FetchError c straight read_error: -1 12 (Cannot allocate memory)
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#1012: 503 error on 200 backend response: FetchError c straight read_error: -1
12 (Cannot allocate memory)
----------------------+-----------------------------------------------------
Reporter: rzuidhof | Type: defect
Status: new | Priority: normal
Milestone: | Component: build
Version: 3.0.1 | Severity: major
Keywords: |
----------------------+-----------------------------------------------------
Sometimes we receive "FetchError c straight read_error: -1 12 (Cannot
allocate memory)" which results in a 503 error. The backend response on
these cases is good and fast: a 200 response with the proper byte count.
It seems to happen more for big files (100 KB - 1 MB).
In case of a chunked backend response this is "FetchError c chunked
read_error: 12 (Cannot allocate memory)".
It looks like a memory problem. We used to be affected by the memory
problem in 3.0.0 with the malloc storage. This happens just as well on
malloc as on file storage. But only when the storage is filled, so not
directly after restart. We have a high value for beresp.grace (hours).
{{{
425 TxURL b /images/test.pdf
425 TxProtocol b HTTP/1.1
425 TxHeader b Host: www.localhost.localdomain
425 TxHeader b User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1;
en-US; rv:1.9.2.21) Gecko/20110830 Firefox/3.6.21 GTB7.1 ( .NET CLR
3.5.30729)
425 TxHeader b Accept:
text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
425 TxHeader b Accept-Language: en-us,en;q=0.5
425 TxHeader b Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
425 TxHeader b X-Forwarded-For: 192.168.1.6
425 TxHeader b X-Varnish: 1101341981
425 TxHeader b Accept-Encoding: gzip
425 RxProtocol b HTTP/1.1
425 RxStatus b 200
425 RxResponse b OK
425 RxHeader b Date: Tue, 06 Sep 2011 15:12:00 GMT
425 RxHeader b Server: Apache/2.2.3 (CentOS)
425 RxHeader b Last-Modified: Tue, 06 Sep 2011 13:53:29 GMT
425 RxHeader b ETag: "169c519-3688b6-4ac3627026840"
425 RxHeader b Accept-Ranges: bytes
425 RxHeader b Content-Length: 3574942
425 RxHeader b Connection: close
425 RxHeader b Content-Type: application/pdf
425 Fetch_Body b 4 -1 1
425 BackendClose b localhost
22 VCL_call c recv lookup
22 VCL_call c hash
22 Hash c /images/test.pdf
22 Hash c www.localhost.localdomain
22 VCL_return c hash
22 VCL_call c miss fetch
22 Backend c 425 default localhost
22 TTL c 1101341981 RFC 120 -1 -1 1315321921 0 1315321920 0 0
22 VCL_call c fetch
22 TTL c 1101341981 VCL 120 43200 -1 1315321921 -0
22 TTL c 1101341981 VCL 1200 43200 -1 1315321921 -0
22 VCL_return c deliver
22 ObjProtocol c HTTP/1.1
22 ObjResponse c OK
22 ObjHeader c Date: Tue, 06 Sep 2011 15:12:00 GMT
22 ObjHeader c Server: Apache/2.2.3 (CentOS)
22 ObjHeader c Last-Modified: Tue, 06 Sep 2011 13:53:29 GMT
22 ObjHeader c ETag: "169c519-3688b6-4ac3627026840"
22 ObjHeader c Content-Type: application/pdf
22 FetchError c straight read_error: -1 12 (Cannot allocate memory)
22 VCL_call c error restart
22 VCL_call c recv lookup
22 VCL_call c hash
22 Hash c /images/test.pdf
22 Hash c www.localhost.localdomain
22 VCL_return c hash
22 VCL_call c miss fetch
22 Backend c 425 default localhost
22 TTL c 1101341981 RFC 120 -1 -1 1315321921 0 1315321920 0 0
22 VCL_call c fetch
22 TTL c 1101341981 VCL 120 43200 -1 1315321921 -0
22 TTL c 1101341981 VCL 1200 43200 -1 1315321921 -0
22 VCL_return c deliver
22 ObjProtocol c HTTP/1.1
22 ObjResponse c OK
22 ObjHeader c Date: Tue, 06 Sep 2011 15:12:00 GMT
22 ObjHeader c Server: Apache/2.2.3 (CentOS)
22 ObjHeader c Last-Modified: Tue, 06 Sep 2011 13:53:29 GMT
22 ObjHeader c ETag: "169c519-3688b6-4ac3627026840"
22 ObjHeader c Content-Type: application/pdf
22 FetchError c straight read_error: -1 12 (Cannot allocate memory)
22 VCL_call c error deliver
22 VCL_call c deliver deliver
22 TxProtocol c HTTP/1.1
22 TxStatus c 503
22 TxResponse c Service Unavailable
22 TxHeader c Server: Varnish
22 TxHeader c Content-Type: text/html; charset=utf-8
22 TxHeader c Retry-After: 5
22 TxHeader c Content-Length: 419
22 TxHeader c Accept-Ranges: bytes
22 TxHeader c Date: Tue, 06 Sep 2011 15:12:00 GMT
22 TxHeader c X-Varnish: 1101341981
22 TxHeader c Age: 0
22 TxHeader c Via: 1.1 varnish
22 TxHeader c Connection: close
22 Length c 419
22 ReqEnd c 1101341981 1315321920.669218063 1315321920.738457918
0.000200033 0.069125891 0.000113964
22 SessionClose c error
22 StatSess c 192.168.1.6 10521 0 1 1 0 0 0 257 419
}}}
--
Ticket URL: <http://www.varnish-cache.org/trac/ticket/1012>
Varnish <http://varnish-cache.org/>
The Varnish HTTP Accelerator
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