[squid-users] aufs and increasing threads

From: Pat Lendon <plendon@dont-contact.us>
Date: Thu, 01 May 2003 14:40:01 -0400

Hi All,

This morning proxy was upgraded to Squid-2.5.STABLE2 and compiled with
aufs. System OS is RedHat.
System has 1gig memory, uses megaraid, and cache is set for 5gig.

Cache log has:

2003/05/01 07:57:41| squidaio_queue_request: WARNING - Queue congestion
2003/05/01 08:53:20| squidaio_queue_request: WARNING - Queue congestion
2003/05/01 09:42:57| squidaio_queue_request: WARNING - Queue congestion
2003/05/01 10:22:08| squidaio_queue_request: WARNING - Queue congestion
2003/05/01 11:23:26| squidaio_queue_request: WARNING - Queue congestion
2003/05/01 13:38:19| squidaio_queue_request: WARNING - Queue congestion

Specifically, how do I increase threads to stop above messages?
Do I need to change: cache_dir aufs /d1/squid_cache 5120 16 256

Storedir and Info stats are listed and thank you!

Store Directory Statistics:
Store Entries : 236614
Maximum Swap Size : 5242880 KB
Current Store Swap Size: 2429532 KB
Current Capacity : 46% used, 54% free

Store Directory #0 (aufs): /d1/squid_cache
FS Block Size 4096 Bytes
First level subdirectories: 16
Second level subdirectories: 256
Maximum Size: 5242880 KB
Current Size: 2429532 KB
Percent Used: 46.34%
Filemap bits in use: 236515 of 262144 (90%)
Filesystem Space in use: 10432528/17488652 KB (60%)
Filesystem Inodes in use: 277360/2223872 (12%)
Flags: SELECTED
Removal policy: lru
LRU reference age: 1.93 days

Squid Object Cache: Version 2.5.STABLE2-20030402
Start Time: Thu, 01 May 2003 05:21:32 GMT
Current Time: Thu, 01 May 2003 18:27:48 GMT
Connection information for squid:
        Number of clients accessing cache: 170
        Number of HTTP requests received: 248979
        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: 316.7
        Average ICP messages per minute since start: 0.0
        Select loop called: 3000232 times, 15.724 ms avg
Cache information for squid:
        Request Hit Ratios: 5min: 34.0%, 60min: 28.8%
        Byte Hit Ratios: 5min: 7.2%, 60min: 5.6%
        Request Memory Hit Ratios: 5min: 0.4%, 60min: 1.0%
        Request Disk Hit Ratios: 5min: 28.0%, 60min: 35.2%
        Storage Swap size: 2430716 KB
        Storage Mem size: 8140 KB
        Mean Object Size: 10.27 KB
        Requests given to unlinkd: 0
Median Service Times (seconds) 5 min 60 min:
        HTTP Requests (All): 0.13498 0.13498
        Cache Misses: 0.23230 0.19742
        Cache Hits: 0.01469 0.01469
        Near Hits: 0.13498 0.15048
        Not-Modified Replies: 0.00767 0.00767
        DNS Lookups: 0.01331 0.00949
        ICP Queries: 0.00000 0.00000
Resource usage for squid:
        UP Time: 47175.949 seconds
        CPU Time: 1313.280 seconds
        CPU Usage: 2.78%
        CPU Usage, 5 minute avg: 6.59%
        CPU Usage, 60 minute avg: 9.99%
        Process Data Segment Size via sbrk(): 45627 KB
        Maximum Resident Size: 0 KB
        Page faults with physical i/o: 413
Memory usage for squid via mallinfo():
        Total space in arena: 45627 KB
        Ordinary blocks: 39054 KB 10858 blks
        Small blocks: 0 KB 0 blks
        Holding blocks: 324 KB 2 blks
        Free Small blocks: 0 KB
        Free Ordinary blocks: 6573 KB
        Total in use: 39378 KB 86%
        Total free: 6573 KB 14%
        Total size: 45951 KB
Memory accounted for:
        Total accounted: 29704 KB
        memPoolAlloc calls: 37668827
        memPoolFree calls: 36914240
File descriptor usage for squid:
        Maximum number of file descriptors: 1024
        Largest file desc currently in use: 270
        Number of file desc currently in use: 234
        Files queued for open: 0
        Available number of file descriptors: 790
        Reserved number of file descriptors: 100
        Store Disk files open: 7
Internal Data Structures:
        236761 StoreEntries
          1839 StoreEntries with MemObjects
          1817 Hot Object Cache Items
        236667 on-disk objects
Received on Thu May 01 2003 - 12:30:52 MDT

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