Hello All,

I am running some polymix-4 tests with squid 2.6-S3. Every single test
I have run so far has these warning. Some FAQs and other searches
suggest that this is caused by a corrupted swap.state, and the
solution is to wipe out the cache dirs and rebuild the cache.

Is there a better solution than this, or does anyone know what causes
the swap to get corrupted. It seems odd that it gets corrupted every
single time.

I am asking since most of the tests seems to fail under load close to
the point where these messages start coming. And I dont want to wipe a
cache store in the middle of a test.

Setup
---------------
polymix-4, 800req/s

box
-----
Dual Core AMD Opteron(tm) Processor 270 HE, 16GB RAM, single SATA disk.

squid-version
-------------------
Squid Cache: Version 2.6.STABLE3
configure options: '--prefix=/usr/squid' '--exec-prefix=/usr/squid'
'--sysconfdir=/usr/squid/etc' '--enable-snmp'
'--enable-err-languages=English' '--enable-linux-netfilter'
'--enable-async-io=24' '--enable-storeio=ufs,aufs,null,coss'
'--enable-coss-aio-ops' '--enable-linux-tproxy' '--enable-gnuregex'
'--enable-internal-dns' '--enable-epoll' '--with-maxfd=32768'
'CFLAGS=-g -O2 -pg '

squid.conf
----------------
visible_hostname        10.51.6.102
cache_dir       aufs /var/cache/squid 30720 16 256
http_port       8080
request_body_max_size   0
snmp_port       3401
negative_ttl    0 minutes
pid_filename    /var/run/squid.pid
coredump_dir    /var/log/squid
cache_effective_user    squid
cache_effective_group   squid
cache_access_log        /var/log/squid/access.log
cache_log       /var/log/squid/cache.log
cache_store_log none
cache_swap_log  /var/log/squid/swap.log
logfile_rotate  10
icp_port        3130
icp_query_timeout       20000
log_icp_queries on
extension_methods       SEARCH PROPPATCH
forwarded_for on
acl all src     0.0.0.0/0.0.0.0
acl localhost   src     127.0.0.1 10.51.6.102
acl manager     proto   cache_object
acl snmppublic  snmp_community  public
http_access allow       localhost
miss_access allow       all
http_access allow       all
snmp_access allow snmppublic    all
memory_pools on
cache_mem 1 GB

I also have the gprof profile and the test results. In case you are interested.

Thanks for your time.

-- pranav

------------------------------
http://pd.dnsalias.org

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