Get Squid Performance Statistic from command line
To inspect Squid’s operation, use squidclient to request information from Squid.
* Squid is a proxy server program for Linux or Unix.
* squidclient is a tool for accessing the Squid service and viewing information such as performance statistics, average HTTP requests per minute, request hit ratios, and median request service time.
To view Squid performance statistics, use:
#squidclient -p
[root@Squid_Proxy ~]# squidclient -p 3128 mgr:info
HTTP/1.0 200 OK
Server: squid/2.6.STABLE6
Date: Mon, 25 May 2009 17:14:47 GMT
Content-Type: text/plain
Expires: Mon, 25 May 2009 17:14:47 GMT
Last-Modified: Mon, 25 May 2009 17:14:47 GMT
X-Cache: MISS from Squid_Proxy.example.com
X-Cache-Lookup: MISS from Squid_Proxy.example.com:3128
Via: 1.0 Squid_Proxy.example.com:3128 (squid/2.6.STABLE6)
Proxy-Connection: close
Squid Object Cache: Version 2.6.STABLE6
Start Time: Mon, 25 May 2009 17:14:32 GMT
Current Time: Mon, 25 May 2009 17:14:47 GMT
Connection information for squid:
Number of clients accessing cache: 1
Number of HTTP requests received: 0
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: 0.0
Average ICP messages per minute since start: 0.0
Select loop called: 6082 times, 2.478 ms avg
Cache information for squid:
Request Hit Ratios: 5min: 0.0%, 60min: 0.0%
Byte Hit Ratios: 5min: -0.0%, 60min: -0.0%
Request Memory Hit Ratios: 5min: 0.0%, 60min: 0.0%
Request Disk Hit Ratios: 5min: 0.0%, 60min: 0.0%
Storage Swap size: 0 KB
Storage Mem size: 108 KB
Mean Object Size: 0.00 KB
Requests given to unlinkd: 0
Median Service Times (seconds) 5 min 60 min:
HTTP Requests (All): 0.00000 0.00000
Cache Misses: 0.00000 0.00000
Cache Hits: 0.00000 0.00000
Near Hits: 0.00000 0.00000
Not-Modified Replies: 0.00000 0.00000
DNS Lookups: 0.00000 0.00000
ICP Queries: 0.00000 0.00000
Resource usage for squid:
UP Time: 15.071 seconds
CPU Time: 0.014 seconds
CPU Usage: 0.09%
CPU Usage, 5 minute avg: 0.00%
CPU Usage, 60 minute avg: 0.00%
Process Data Segment Size via sbrk(): 2776 KB
Maximum Resident Size: 0 KB
Page faults with physical i/o: 0
Memory usage for squid via mallinfo():
Total space in arena: 2908 KB
Ordinary blocks: 2872 KB 3 blks
Small blocks: 0 KB 0 blks
Holding blocks: 356 KB 1 blks
Free Small blocks: 0 KB
Free Ordinary blocks: 35 KB
Total in use: 3228 KB 99%
Total free: 35 KB 1%
Total size: 3264 KB
Memory accounted for:
Total accounted: 158 KB
memPoolAlloc calls: 985
memPoolFree calls: 314
File descriptor usage for squid:
Maximum number of file descriptors: 1024
Largest file desc currently in use: 13
Number of file desc currently in use: 11
Files queued for open: 0
Available number of file descriptors: 1013
Reserved number of file descriptors: 100
Store Disk files open: 0
IO loop method: epoll
Internal Data Structures:
27 StoreEntries
27 StoreEntries with MemObjects
26 Hot Object Cache Items
0 on-disk objectsTo view average HTTP requests per minute, request hit ratios, and median request service time, use:
#squidclient -p
[root@Squid_Proxy ~]# squidclient -p 3128 mgr:
HTTP/1.0 200 OK
Server: squid/2.6.STABLE6
Date: Mon, 25 May 2009 17:10:55 GMT
Content-Type: text/plain
Expires: Mon, 25 May 2009 17:10:55 GMT
Last-Modified: Mon, 25 May 2009 17:10:55 GMT
X-Cache: MISS from Squid_Proxy.example.com
X-Cache-Lookup: MISS from Squid_Proxy.example.com:3128
Via: 1.0 Squid_Proxy.example.com:3128 (squid/2.6.STABLE6)
Proxy-Connection: close
mem Memory Utilization public
cbdata Callback Data Registry Contents public
events Event Queue public
squidaio_counts Async IO Function Counters public
coss COSS Stats public
diskd DISKD Stats public
config Current Squid Configuration hidden
ipcache IP Cache Stats and Contents public
fqdncache FQDN Cache Stats and Contents public
idns Internal DNS Statistics public
external_acl External ACL stats public
http_headers HTTP Header Statistics public
menu This Cachemanager Menu public
shutdown Shut Down the Squid Process hidden
offline_toggle Toggle offline_mode setting hidden
info General Runtime Information public
filedescriptors Process Filedescriptor Allocation public
objects All Cache Objects public
vm_objects In-Memory and In-Transit Objects public
openfd_objects Objects with Swapout files open public
pending_objects Objects being retreived from the network public
client_objects Objects being sent to clients public
io Server-side network read() size histograms public
counters Traffic and Resource Counters public
peer_select Peer Selection Algorithms public
digest_stats Cache Digest and ICP blob public
5min 5 Minute Average of Counters public
60min 60 Minute Average of Counters public
utilization Cache Utilization public
histograms Full Histogram Counts public
active_requests Client-side Active Requests public
store_digest Store Digest public
storedir Store Directory Stats public
store_check_cachable_stats storeCheckCachable() Stats public
store_io Store IO Interface Stats public
pconn Persistent Connection Utilization Histograms public
refresh Refresh Algorithm Statistics public
delay Delay Pool Levels public
forward Request Forwarding Statistics public
client_list Cache Client List public
asndb AS Number Database public
server_list Peer Cache Statistics public
non_peers List of Unknown sites sending ICP messages public