On 15/02/2013 10:43 p.m., dahanhsi wrote:
Thanks for your reply,
provide more information below:
2013/2/15 Amos Jeffries <squid3@xxxxxxxxxxxxx>:
On 15/02/2013 10:12 p.m., dahanhsi wrote:
Hi all,
I use squid as a reverse proxy, and make thousands of connection to the
it.
Which version of Squid?
I use Squid 2.7
Output of "squid -v" please.
What do you mean by "thousands of connections". 1's of tousands? 10's of
thousands? 100's of thousands?
# netstat -nat|grep -i "80"|wc -l
the result vary from 4651 to 9404
There are one ten of all connections can not establish in TCP layer,
because squid does not respond SYN-ACK to client's SYN packet. How can
I solve it?
Thanks
Check ulimit settings for Squid?
# ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 20
file size (blocks, -f) unlimited
pending signals (-i) 16382
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 655360
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) unlimited
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
Check your cache.log for messages about running out of filedescriptors?
I set my limit.conf to:
root soft nofile 655360
root hard nofile 655360
That does not answer the question. Squid may have been built or
configured with a limit of less than 655360 filedescriptors.
cache.log should tell you if Squid is reaching some limit like this.
Amos
