Squid stats - Beginner's guide

Squidclient is a tool that can access the squid service, and retrieve statistics on the service. For example, to get some general performance statistic, run the following command on the squid server



squidclient -p 3128 mgr:

HTTP/1.0 200 OK
Server: squid/2.6.STABLE14
Date: Sun, 25 Mar 2018 15:31:13 GMT
Content-Type: text/plain
Expires: Sun, 25 Mar 2018 15:31:13 GMT
Last-Modified: Sun, 25 Mar 2018 15:31:13 GMT
X-Cache: MISS from 172.19.134.2
X-Cache-Lookup: MISS from 172.19.134.2:3128
Via: 1.0 172.19.134.2:3128 (squid/2.6.STABLE14)
Proxy-Connection: close

 mem                    Memory Utilization      public
 cbdata                 Callback Data Registry Contents public
 events                 Event Queue     public
 squidaio_counts        Async IO Function Counters      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
 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

squidclient -h localhost cache_object://localhost/ mgr:info

<Headers missed>

Squid Object Cache: Version 2.7.STABLE9

Start Time: Thu, 12 Jul 2012 08:04:02 GMT

Current Time:     Thu, 12 Jul 2012 09:21:16 GMT

Connection information for squid:

Number of clients accessing cache:  2

Number of HTTP requests received:   31

Number of ICP messages received:    0

Number of ICP messages sent:  0

Number of queued ICP replies: 0

Number of HTCP messages received:   0

Number of HTCP messages sent: 0

Request failure ratio:  0.00

Average HTTP requests per minute since start:   0.4

Average ICP messages per minute since start:    0.0

Select loop called: 11729 times, 395.079 ms avg

Cache information for squid:

Request Hit Ratios:     5min: 0.0%, 60min: 0.0%

Byte Hit Ratios:  5min: 0.2%, 60min: 0.4%

Request Memory Hit Ratios:    5min: 0.0%, 60min: 0.0%

Request Disk Hit Ratios:      5min: 0.0%, 60min: 0.0%

Storage Swap size:      90344 KB

Storage Mem size: 124 KB

Mean Object Size: 55.80 KB

Requests given to unlinkd:    0

Median Service Times (seconds)  5 min    60 min:

HTTP Requests (All):   0.01556  0.01556

Cache Misses:          0.01556  0.01556

Cache Hits:            0.00000  0.00000

Near Hits:             0.00000  0.00000

Not-Modified Replies:  0.00000  0.00000

DNS Lookups:           0.00000  0.06364

ICP Queries:           0.00000  0.00000

Resource usage for squid:

UP Time:    4633.878 seconds

CPU Time:   2.532 seconds

CPU Usage:  0.05%

CPU Usage, 5 minute avg:      0.07%

CPU Usage, 60 minute avg:     0.05%

Process Data Segment Size via sbrk(): 2484 KB

Maximum Resident Size: 21216 KB

Page faults with physical i/o: 0

Memory usage for squid via mallinfo():

Total space in arena:    2484 KB

Ordinary blocks:         2360 KB      3 blks

Small blocks:               0 KB      0 blks

Holding blocks:           280 KB      1 blks

Free Small blocks:          0 KB

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