Re: Concerned about page fault ratio

I am getting the same one But i am working on it and as i believe that its
because of IO threads not MEM so let see what happen May be I am wrong but i
have post this message before on the list and could not get help . So if any
one can correct me.?

With Regards
Ahsan Khan
Sr. System Admin
Internet Division (OneNet)
Sun Communication Pvt. Ltd.
http://www.one.net.pk

----- Original Message -----
From: "Steve Snyder" <swsnyder@home.com>
To: "Squid Mailing List" <squid-users@ircache.net>
Sent: Thursday, March 16, 2000 1:36 AM
Subject: Concerned about page fault ratio

> I'm concerned about the page fault ratio (pfr) that I'm seeing (Squid
> 2.2S5, RedHat v6.0 /w kernel 2.2.14).
>
> The full output of "client mgr:info" is below, but here's the short
> version:
>
> pfr = Page_faults_with_physical_i/o / Number_of_HTTP_requests_received
>
> 0.47 = 9112 / 19368
>
> (The fault and requests numbers above are low due to my having
> rebooted recently, but the ratio calculated is representative of what
> I've been seeing.)
>
> This ratio is much higher than the examples I see in the Squid FAQ. I
> don't any reason for Squid to have to be swapped out. I've got plenty
> of RAM for the programs running on this box and the swap partition is
> barely used.
>
> Should I be concerned about the page fault ratio or do these numbers
> seem OK?
>
> Thank you.
>
> ------------------------------------------
>
> HTTP/1.0 200 OK
> Server: Squid/2.2.STABLE5
> Mime-Version: 1.0
> Date: Wed, 15 Mar 2000 20:21:08 GMT
> Content-Type: text/plain
> Expires: Wed, 15 Mar 2000 20:21:08 GMT
> Last-Modified: Wed, 15 Mar 2000 20:21:08 GMT
> X-Cache: MISS from proxy.snydernet.lan
> Proxy-Connection: close
>
> Squid Object Cache: Version 2.2.STABLE5
> Start Time: Thu, 09 Mar 2000 17:45:25 GMT
> Current Time: Wed, 15 Mar 2000 20:21:08 GMT
> Connection information for squid:
> Number of clients accessing cache: 5
> Number of HTTP requests received: 19368
> Number of ICP messages received: 0
> Number of ICP messages sent: 0
> Number of queued ICP replies: 0
> Request failure ratio: 0.00%
> HTTP requests per minute: 2.2
> ICP messages per minute: 0.0
> Select loop called: 1478397 times, 356.969 ms avg
> Cache information for squid:
> Request Hit Ratios: 5min: 0.0%, 60min: 61.0%
> Byte Hit Ratios: 5min: -0.0%, 60min: 2.0%
> Storage Swap size: 237198 KB
> Storage Mem size: 9928 KB
> Storage LRU Expiration Age: 102.02 days
> Mean Object Size: 8.17 KB
> Requests given to unlinkd: 2951
> Median Service Times (seconds) 5 min 60 min:
> HTTP Requests (All): 0.17711 0.05046
> Cache Misses: 0.17711 0.37825
> Cache Hits: 0.00000 0.00405
> Near Hits: 0.00000 0.27332
> Not-Modified Replies: 0.00000 0.00721
> DNS Lookups: 0.00000 0.00094
> ICP Queries: 0.00000 0.00000
> Resource usage for squid:
> UP Time: 527742.522 seconds
> CPU Time: 71.230 seconds
> CPU Usage: 0.01%
> CPU Usage, 5 minute avg: 0.00%
> CPU Usage, 60 minute avg: 0.05%
> Maximum Resident Size: 0 KB
> Page faults with physical i/o: 9112
> Memory usage for squid via mallinfo():
> Total space in arena: 17246 KB
> Ordinary blocks: 17222 KB 28 blks
> Small blocks: 0 KB 0 blks
> Holding blocks: 176 KB 1 blks
> Free Small blocks: 0 KB
> Free Ordinary blocks: 23 KB
> Total in use: 17398 KB 101%
> Total free: 23 KB 0%
> Memory accounted for:
> Total accounted: 14025 KB
> File descriptor usage for squid:
> Maximum number of file descriptors: 1024
> Largest file desc currently in use: 15
> Number of file desc currently in use: 16
> Files queued for open: 0
> Available number of file descriptors: 1008
> Reserved number of file descriptors: 100
> Store Disk files open: 0
> Internal Data Structures:
> 29055 StoreEntries
> 2150 StoreEntries with MemObjects
> 2149 Hot Object Cache Items
> 29021 Filemap bits set
> 29021 on-disk objects
>
> *** Steve Snyder ***
>
Received on Wed Mar 15 2000 - 14:18:15 MST