An upstream response is buffered to a temporary file

What settings / parameters can be tweaked to increase the amount of
buffers available as to not go to a temporary file?

We are seeing many of these:

2011/10/21 14:01:24 [warn] 24547#0: *2408454 an upstream response is
buffered to a temporary file /var/lib/nginx/fastcgi/5/69/0000017695
while reading upstream, client: 1.1.1.1, server: www.someserver.com,
request: “GET /edit.html?id=6816841 HTTP/1.1”, upstream:
“fastcgi://192.168.1.5:9000”, host: “www.someserver.com”, referrer:
http://www.someserver.com/c.html

I tried messing around with proxy_buffer settings, but not sure if I’m
on the right track.

Thanks

Posted at Nginx Forum:
http://forum.nginx.org/read.php?2,217034,217034#msg-217034

Hello!

On Fri, Oct 21, 2011 at 03:36:23PM -0400, iberkner wrote:

http://www.someserver.com/c.html

I tried messing around with proxy_buffer settings, but not sure if I’m
on the right track.

This is a warning message which is here to let you know that
response was buffered to disk. Depending on your use case you may
want either to tune fastcgi_buffers/fastcgi_buffer_size, or disable
disk buffering with “fastcgi_max_temp_file 0”, or just ignore this
warning.

Maxim D.

Thanks,

I increased the fastcgi_buffers as follows:

fastcgi_buffers 256 4k;

and that took care of this problem.

Another problem I’m trying to deal with is:

netstat -an|awk ‘/tcp/ {print $6}’|sort|uniq -c
12 CLOSING
1176 ESTABLISHED
58 FIN_WAIT1
218 FIN_WAIT2
23 LAST_ACK
43 LISTEN
91 SYN_RECV
3606 TIME_WAIT

I’m trying to understand why there are so many connections in TIME_WAIT
status. Any ideas on how to research this issue?

On Fri, Oct 21, 2011 at 3:44 PM, Maxim D. [email protected]
wrote:

buffered to a temporary file /var/lib/nginx/fastcgi/5/69/0000017695
want either to tune fastcgi_buffers/fastcgi_buffer_size, or disable
disk buffering with “fastcgi_max_temp_file 0”, or just ignore this
warning.

Maxim D.


nginx mailing list
[email protected]
http://mailman.nginx.org/mailman/listinfo/nginx

Ilan B.
Chief Technology Officer
Time4Learning.com

6300 NE 1st Ave., Suite 203
Ft. Lauderdale, FL 33334
(954) 771-0914

http://www.twitter.com/time4learning
http://www.facebook.com/Time4Learning

Time4Learning.com - Online interactive curriculum for home use, PreK-8th
Grade.
Time4Writing.com - Online writing tutorials for high, middle, and
elementary
school students.
Time4Learning.net - A forum to chat with parents online about kids,
education, parenting and more.
spellingcity.com - Online vocabulary and spelling activities for
teachers,
parents and students.

I read online that making these changes:

echo 1 > /proc/sys/net/ipv4/tcp_tw_recycle

echo 1 > /proc/sys/net/ipv4/tcp_tw_reuse
can potentially have a good impact on performance but can also increase
connection drops.

Any thoughts?

On Fri, Oct 21, 2011 at 4:02 PM, Ilan B.
[email protected]wrote:

netstat -an|awk ‘/tcp/ {print $6}’|sort|uniq -c
status. Any ideas on how to research this issue?

We are seeing many of these:

[email protected]

elementary school students.
Time4Learning.net - A forum to chat with parents online about kids,
education, parenting and more.
spellingcity.com - Online vocabulary and spelling activities for teachers,
parents and students.

Ilan B.
Chief Technology Officer
Time4Learning.com

6300 NE 1st Ave., Suite 203
Ft. Lauderdale, FL 33334
(954) 771-0914

http://www.twitter.com/time4learning
http://www.facebook.com/Time4Learning

Time4Learning.com - Online interactive curriculum for home use, PreK-8th
Grade.
Time4Writing.com - Online writing tutorials for high, middle, and
elementary
school students.
Time4Learning.net - A forum to chat with parents online about kids,
education, parenting and more.
spellingcity.com - Online vocabulary and spelling activities for
teachers,
parents and students.

For time_wait issue., pls try keepalive enable if it act as proxy.

2011/10/22, Ilan B. [email protected]:

netstat -an|awk ‘/tcp/ {print $6}’|sort|uniq -c
status. Any ideas on how to research this issue?

We are seeing many of these:

[email protected]

Time4Writing.com - Online writing tutorials for high, middle, and elementary
school students.
Time4Learning.net - A forum to chat with parents online about kids,
education, parenting and more.
spellingcity.com - Online vocabulary and spelling activities for teachers,
parents and students.


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