Hi guys. I'm using squid 3.1.4 and since of first 3.1 stable release
I'm suffering from memory leak problems too. My production server is a
CentOS 5.4 32 bits (kernel 2.6.18-164.6.1.el5). It has 2GB of RAM
(512MB reserved to squid cache_mem) and 6GB of disk space reserved to
squid's disk cache. In approximately 24h, squid consumes all the
available memory of my server and swap starts to be consumed. I'm
currently restarting squid once a day in order to workaround the
problem. Follow attached a squidclient output made some hours before
all the server memory be consumed.
HTTP/1.0 200 OK
Server: squid
Mime-Version: 1.0
Date: Wed, 02 Jun 2010 02:22:12 GMT
Content-Type: text/plain
Expires: Wed, 02 Jun 2010 02:22:12 GMT
Last-Modified: Wed, 02 Jun 2010 02:22:12 GMT
X-Cache: MISS from proxyweb.ipasgo.go.gov.br
Via: 1.0 proxyweb.ipasgo.go.gov.br (squid)
Proxy-Connection: close
Squid Object Cache: Version 3.1.4
Start Time: Tue, 01 Jun 2010 02:59:02 GMT
Current Time: Wed, 02 Jun 2010 02:22:12 GMT
Connection information for squid:
Number of clients accessing cache: 1
Number of HTTP requests received: 1607991
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: 1146.0
Average ICP messages per minute since start: 0.0
Select loop called: 21704724 times, 3.879 ms avg
Cache information for squid:
Hits as % of all requests: 5min: 1.3%, 60min: 2.5%
Hits as % of bytes sent: 5min: 99.3%, 60min: 93.0%
Memory hits as % of hit requests: 5min: 100.0%, 60min: 100.0%
Disk hits as % of hit requests: 5min: 0.0%, 60min: 0.0%
Storage Swap size: 5662188 KB
Storage Swap capacity: 90.0% used, 10.0% free
Storage Mem size: 420444 KB
Storage Mem capacity: 80.7% used, 19.3% free
Mean Object Size: 21.29 KB
Requests given to unlinkd: 0
Median Service Times (seconds) 5 min 60 min:
HTTP Requests (All): 0.00463 0.00463
Cache Misses: 0.00307 0.28853
Cache Hits: 0.00000 0.00000
Near Hits: 0.00000 0.00000
Not-Modified Replies: 0.00000 0.00000
DNS Lookups: 0.00860 0.00860
ICP Queries: 0.00000 0.00000
Resource usage for squid:
UP Time: 84190.610 seconds
CPU Time: 2395.902 seconds
CPU Usage: 2.85%
CPU Usage, 5 minute avg: 0.05%
CPU Usage, 60 minute avg: 0.05%
Process Data Segment Size via sbrk(): 1081804 KB
Maximum Resident Size: 0 KB
Page faults with physical i/o: 2522
Memory usage for squid via mallinfo():
Total space in arena: 1081936 KB
Ordinary blocks: 1079110 KB 7695 blks
Small blocks: 0 KB 0 blks
Holding blocks: 3492 KB 7 blks
Free Small blocks: 0 KB
Free Ordinary blocks: 2825 KB
Total in use: 1082602 KB 100%
Total free: 2825 KB 0%
Total size: 1085428 KB
Memory accounted for:
Total accounted: 550778 KB 51%
memPool accounted: 550778 KB 51%
memPool unaccounted: 534649 KB 49%
memPoolAlloc calls: 307930462
memPoolFree calls: 308780650
File descriptor usage for squid:
Maximum number of file descriptors: 4096
Largest file desc currently in use: 92
Number of file desc currently in use: 46
Files queued for open: 0
Available number of file descriptors: 4050
Reserved number of file descriptors: 100
Store Disk files open: 0
Internal Data Structures:
266030 StoreEntries
57596 StoreEntries with MemObjects
57595 Hot Object Cache Items
266004 on-disk objects
