Re: [squid-users] Slower from cache??

Interesting, I switched the cache-access type to 'ufs' and everything
seems great. 'aufs' is just as slow as 'diskd'...

Peter Smith wrote:

> I recently stumbled across this behavior on one of my proxys. This is
> a test proxy and is not used often. I proxy an ftp file of
> considerable size and everything goes as planned. However, getting
> the file from the cache appears slower than the original
> internet-based download. Btw, I am lucky in that I am on Internet2,
> so ~2.5MB/s is normal. I don't see how I could possibly be
> misconfigured. During this whole test the proxy is practically asleep
> it is so underutilised. Is there anything I should look at? I also
> don't see how it could be my hardware and/or software. It just looks
> like Squid is not functioning well.
>
> [root@client tmp]# time ftp_proxy=proxy:3128 wget
> ftp://ftp.ttu.edu/pub/mirrors/kernel.org/linux/kernel/v2.4/linux-2.4.18.tar.gz
>
> --04:59:02--
> ftp://ftp.ttu.edu/pub/mirrors/kernel.org/linux/kernel/v2.4/linux-2.4.18.tar.gz
>
> => `linux-2.4.18.tar.gz.6'
> Connecting to proxy:3128... connected!
> Proxy request sent, awaiting response... 200 OK
> Length: 30,108,170 [application/x-tar]
>
> 0K .......... .......... .......... .......... .......... 0% @
> 531.91 KB/s
> 50K .......... .......... .......... .......... .......... 0% @
> 1.74 MB/s
> 100K .......... .......... .......... .......... .......... 0% @
> 2.22 MB/s
> 150K .......... .......... .......... .......... .......... 0% @
> 2.22 MB/s
> 200K .......... .......... .......... .......... .......... 0% @
> 2.22 MB/s
> ...
> 29200K .......... .......... .......... .......... .......... 99% @
> 3.05 MB/s
> 29250K .......... .......... .......... .......... .......... 99% @
> 2.33 MB/s
> 29300K .......... .......... .......... .......... .......... 99% @
> 2.44 MB/s
> 29350K .......... .......... .......... .......... .......... 99% @
> 2.44 MB/s
> 29400K .. 100% @
> 76.05 KB/s
>
> 04:59:14 (2.41 MB/s) - `linux-2.4.18.tar.gz.6' saved [30108170/30108170]
>
>
> real 0m12.349s
> user 0m0.150s
> sys 0m0.680s
>
> -------------------------
> 1024070757.154 12341 proxy TCP_MISS/200 30108463 GET
> ftp://ftp.ttu.edu/pub/mirrors/kernel.org/linux/kernel/v2.4/linux-2.4.18.tar.gz
> - DIRECT/129.118.2.10 application/x-tar
> -------------------------
> [root@client tmp]# time ftp_proxy=proxy:3128 wget
> ftp://ftp.ttu.edu/pub/mirrors/kernel.org/linux/kernel/v2.4/linux-2.4.18.tar.gz
>
> --04:59:24--
> ftp://ftp.ttu.edu/pub/mirrors/kernel.org/linux/kernel/v2.4/linux-2.4.18.tar.gz
>
> => `linux-2.4.18.tar.gz.7'
> Connecting to proxy:3128... connected!
> Proxy request sent, awaiting response... 200 OK
> Length: 30,108,170 [application/x-tar]
>
> 0K .......... .......... .......... .......... .......... 0% @
> 209.21 KB/s
> 50K .......... .......... .......... .......... .......... 0% @
> 191.57 KB/s
> 100K .......... .......... .......... .......... .......... 0% @
> 227.27 KB/s
> 150K .......... .......... .......... .......... .......... 0% @
> 192.31 KB/s
> 200K .......... .......... .......... .......... .......... 0% @
> 209.21 KB/s
> ...
> 29200K .......... .......... .......... .......... .......... 99% @
> 207.47 KB/s
> 29250K .......... .......... .......... .......... .......... 99% @
> 193.05 KB/s
> 29300K .......... .......... .......... .......... .......... 99% @
> 248.76 KB/s
> 29350K .......... .......... .......... .......... .......... 99% @
> 9.77 MB/s
> 29400K .. 100% @
> 2.45 MB/s
>
> 05:01:26 (241.42 KB/s) - `linux-2.4.18.tar.gz.7' saved
> [30108170/30108170]
>
>
> real 2m1.816s
> user 0m0.130s
> sys 0m0.290s
>
> -------------------------
> 1024070888.819 121808 proxy TCP_HIT/200 30108471 GET
> ftp://ftp.ttu.edu/pub/mirrors/kernel.org/linux/kernel/v2.4/linux-2.4.18.tar.gz
> - NONE/- application/x-tar
> -------------------------
> [root@proxy root]# squid -v
> Squid Cache: Version 2.4.STABLE3
> -------------------------
> hierarchy_stoplist cgi-bin ?
> acl QUERY urlpath_regex cgi-bin \?
> no_cache deny QUERY
>
> acl virus1 urlpath_regex /readme\.exe$
> http_access deny virus1
>
> acl virus2a dstdomain us.f1.yahoofs.com
> acl virus2b urlpath_regex /timeupdate\.exe$
> http_access deny virus2a virus2b
>
> acl virus3 urlpath_regex /explorer\.exe$
> http_access deny virus3
>
> acl all src 0.0.0.0/0.0.0.0
> acl CONNECT method CONNECT
> http_access allow all
>
> # SNMP:
> acl snmppublic snmp_community XXXX
> snmp_access allow snmppublic
> snmp_access deny all
>
> # Timeouts:
> read_timeout 5 minutes
> request_timeout 30 seconds
> pconn_timeout 60 seconds
> half_closed_clients on
> shutdown_lifetime 0 seconds
> negative_ttl 30 seconds
> icp_query_timeout 1000 milliseconds
> reference_age 1 week
>
> cache_effective_user squid
> cache_effective_group squid
> cache_dir diskd /cache1 4096 64 64 Q1=72 Q2=64
> cache_dir diskd /cache2 4096 64 64 Q1=72 Q2=64
> cache_dir diskd /cache3 4096 64 64 Q1=72 Q2=64
> cache_mem 400 MB
>
> maximum_object_size 256 MB
> minimum_object_size 0
> request_body_max_size 0
> request_header_max_size 64 KB
>
> announce_host localhost
> visible_hostname proxy
> http_port 3128
> cache_store_log none
> fqdncache_size 0
>
>
>
>
>
Received on Fri Jun 14 2002 - 15:19:27 MDT