mi...@x.org.pl wrote:
Hi all,
I'm going crazy with squid configuration. I've been trying to make it work
fine for couple of weeks and finally gave up. Please, help! :)
The problem is that squid responses are very very slow. I can notice a
significant delays even when I use squid by myself (only my browser using
it) and if I let some more people use it as transparent proxy, there is
barely any response from squid on all machines.
I install squid on slackware 12.2. Already tried few versions
(2.7.STABLE5,2.7.STABLE6, 3.0.STABLE11) and many compile parameters. Let's
say I do:
./configure \
--prefix=/usr \
--includedir=/usr/include \
--datadir=/usr/share \
--bindir=/usr/sbin \
--libexecdir=/usr/lib/squid \
--localstatedir=/var \
--sysconfdir=/etc/squid
I have the other instance of squid on other machine which works fine. But
even when I move the config from this machine to my slackware box it does
the same way - SLOW.
System configuration is:
# uname -a
Linux ninja 2.6.27.7-smp #2 SMP Thu Nov 20 22:32:43 CST 2008 i686 Intel(R)
Xeon(TM) CPU 3.40GHz GenuineIntel GNU/Linux
# free -m
total used free shared buffers cached
Mem: 3036 666 2370 0 356 203
-/+ buffers/cache: 107 2929
Swap: 4102 0 4102
# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/root 30G 6.8G 22G 24% /
tmpfs 1.5G 0 1.5G 0% /dev/shm
This is what I call SLOW:
$ time w3m -dump www.slackware.org
[...]
real 3m9.045s
^^^^^^^^ !!!
user 0m0.032s
sys 0m0.008s
Where was this request run from (the proxy itself, or another
computer)? Was this request intercepted by the proxy, and if so, how?
What does the access log look like after this request? Any additional
entries in the cache log?
================== squidclient mgr:info ============================
HTTP/1.0 200 OK
Server: squid/2.7.STABLE6
Date: Thu, 12 Feb 2009 14:27:43 GMT
Content-Type: text/plain
Expires: Thu, 12 Feb 2009 14:27:43 GMT
X-Cache: MISS from ninja
Via: 1.0 ninja:3128 (squid/2.7.STABLE6)
Connection: close
Squid Object Cache: Version 2.7.STABLE6
Start Time: Thu, 12 Feb 2009 14:09:54 GMT
Current Time: Thu, 12 Feb 2009 14:27:43 GMT
Connection information for squid:
Number of clients accessing cache: 113
Number of HTTP requests received: 3487
Number of ICP messages received: 0
Number of ICP messages sent: 0
Number of queued ICP replies: 0
Request failure ratio: 0.00
Average HTTP requests per minute since start: 195.7
Average ICP messages per minute since start: 0.0
Select loop called: 54532 times, 19.601 ms avg
Cache information for squid:
Request Hit Ratios: 5min: 23.5%, 60min: 15.9%
Byte Hit Ratios: 5min: 7.5%, 60min: 9.3%
Request Memory Hit Ratios: 5min: 42.6%, 60min: 46.1%
Request Disk Hit Ratios: 5min: 21.1%, 60min: 23.9%
Storage Swap size: 35564 KB
Storage Mem size: 4520 KB
Mean Object Size: 12.13 KB
Requests given to unlinkd: 35
Median Service Times (seconds) 5 min 60 min:
HTTP Requests (All): 0.01164 0.02742
Cache Misses: 0.03066 0.03829
Cache Hits: 0.00000 0.00000
Near Hits: 0.06286 0.01309
Not-Modified Replies: 0.00000 0.00000
DNS Lookups: 0.00094 0.00094
ICP Queries: 0.00000 0.00000
That all looks like there is no problem with Squid...
Resource usage for squid:
UP Time: 1068.862 seconds
CPU Time: 2.192 seconds
CPU Usage: 0.21%
CPU Usage, 5 minute avg: 0.23%
CPU Usage, 60 minute avg: 0.21%
Process Data Segment Size via sbrk(): 8536 KB
Maximum Resident Size: 0 KB
Page faults with physical i/o: 0
Memory usage for squid via mallinfo():
Total space in arena: 8536 KB
Ordinary blocks: 8450 KB 12 blks
Small blocks: 0 KB 0 blks
Holding blocks: 2664 KB 2 blks
Free Small blocks: 0 KB
Free Ordinary blocks: 85 KB
Total in use: 11114 KB 99%
Total free: 85 KB 1%
Total size: 11200 KB
Memory accounted for:
Total accounted: 6216 KB
memPoolAlloc calls: 483763
memPoolFree calls: 449379
File descriptor usage for squid:
Maximum number of file descriptors: 8192
Largest file desc currently in use: 95
Number of file desc currently in use: 55
Files queued for open: 0
Available number of file descriptors: 8137
Reserved number of file descriptors: 100
Store Disk files open: 0
IO loop method: epoll
Internal Data Structures:
2978 StoreEntries
980 StoreEntries with MemObjects
976 Hot Object Cache Items
2931 on-disk objects
=============== squid.conf [ almost default ] ==================
r...@ninja:/etc/squid# cat squid.conf | grep -v '^#' | uniq
acl all src all
acl manager proto cache_object
acl localhost src 127.0.0.1/32
acl to_localhost dst 127.0.0.0/8
acl localnet src 10.0.0.0/8 # RFC1918 possible internal network
acl localnet src 172.16.0.0/12 # RFC1918 possible internal network
acl localnet src 192.168.0.0/16 # RFC1918 possible internal network
acl SSL_ports port 443
acl Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 # https
acl Safe_ports port 70 # gopher
acl Safe_ports port 210 # wais
acl Safe_ports port 1025-65535 # unregistered ports
acl Safe_ports port 280 # http-mgmt
acl Safe_ports port 488 # gss-http
acl Safe_ports port 591 # filemaker
acl Safe_ports port 777 # multiling http
acl CONNECT method CONNECT
http_access allow manager localhost
http_access deny manager
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localnet
http_access deny all
icp_access allow localnet
icp_access deny all
http_port 3128 transparent
hierarchy_stoplist cgi-bin ?
cache_mem 256 MB
cache_dir ufs /var/squid/cache 20000 64 256
access_log /var/log/squid/access.log squid
cache_log /var/log/squid/cache.log
cache_store_log /var/log/squid/store.log
pid_filename /var/run/squid.pid
netdb_filename /var/log/squid/netdb.state
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
refresh_pattern . 0 20% 4320
acl shoutcast rep_header X-HTTP09-First-Line ^ICY.[0-9]
upgrade_http0.9 deny shoutcast
acl apache rep_header Server ^Apache
broken_vary_encoding allow apache
cache_effective_user squid
cache_effective_user squid
coredump_dir /var/squid/cache
================= cache.log =====================
2009/02/12 14:15:01| Starting Squid Cache version 2.7.STABLE6 for
i686-pc-linux-gnu...
2009/02/12 14:15:01| Process ID 30656
2009/02/12 14:15:01| With 8192 file descriptors available
2009/02/12 14:15:01| Using epoll for the IO loop
2009/02/12 14:15:01| Performing DNS Tests...
2009/02/12 14:15:01| Successful DNS name lookup tests...
The DNS tests completed within a second... That's a good sign.
2009/02/12 14:15:01| DNS Socket created at 0.0.0.0, port 51877, FD 6
2009/02/12 14:15:01| Adding nameserver 213.134.134.134 from /etc/resolv.conf
2009/02/12 14:15:01| logfileOpen: opening log /var/log/squid/access.log
2009/02/12 14:15:01| Unlinkd pipe opened on FD 11
2009/02/12 14:15:01| Swap maxSize 20480000 + 262144 KB, estimated 0 objects
2009/02/12 14:15:01| Target number of buckets: 79777
2009/02/12 14:15:01| Using 131072 Store buckets
2009/02/12 14:15:01| Max Mem size: 262144 KB
2009/02/12 14:15:01| Max Swap size: 20480000 KB
2009/02/12 14:15:01| logfileOpen: opening log /var/log/squid/store.log
2009/02/12 14:15:01| Rebuilding storage in /var/squid/cache (DIRTY)
Squid wasn't cleanly shut down, or the store.log was corrupted...
2009/02/12 14:15:01| Using Least Load store dir selection
2009/02/12 14:15:01| Set Current Directory to /var/squid/cache
2009/02/12 14:15:01| Loaded Icons.
2009/02/12 14:15:01| Accepting transparently proxied HTTP connections at
10.10.0.26, port 3128, FD 13.
2009/02/12 14:15:01| Accepting ICP messages at 0.0.0.0, port 3130, FD 14.
2009/02/12 14:15:01| WCCP Disabled.
2009/02/12 14:15:01| Ready to serve requests.
2009/02/12 14:15:01| Done reading /var/squid/cache swaplog (1138 entries)
2009/02/12 14:15:01| Finished rebuilding storage from disk.
2009/02/12 14:15:01| 1095 Entries scanned
2009/02/12 14:15:01| 0 Invalid entries.
2009/02/12 14:15:01| 0 With invalid flags.
2009/02/12 14:15:01| 1095 Objects loaded.
2009/02/12 14:15:01| 0 Objects expired.
2009/02/12 14:15:01| 42 Objects cancelled.
2009/02/12 14:15:01| 0 Duplicate URLs purged.
2009/02/12 14:15:01| 0 Swapfile clashes avoided.
2009/02/12 14:15:01| Took 0.3 seconds (3929.1 objects/sec).
But rebuilding the store was quick. No obvious problems here.
2009/02/12 14:15:01| Beginning Validation Procedure
2009/02/12 14:15:01| Completed Validation Procedure
2009/02/12 14:15:01| Validated 1053 Entries
2009/02/12 14:15:01| store_swap_size = 12804k
2009/02/12 14:15:02| storeLateRelease: released 0 objects
It's looking like the problem exists outside of Squid.
Chris
