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Date:      Fri, 21 May 1999 22:10:24 +1000
From:      Stanley.Hopcroft@ipaustralia.gov.au
To:        freebsd-isp@freebsd.org
Subject:   lousy performance of Squid-2.2.STABLE3 compared to 1.1.20 on FreeBSD 2.28
Message-ID:  <4A256778.0043233A.00@noteshub01.aipo.gov.au>

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Dear Ladies and Gentlemen,

I am writing to ask your suggestions on why Squid 2.2.STABLE3 performs very
badly compared to 1.1.20 on the same FreeBSD 2.2.8-STABLE host.

Here are the differences between the squid.conf and the default :-

pericles# diff squid.conf squid.conf.default
346d345
< cache_mem  20 MB
416,417d414
< cache_dir /www/squid-2.2.STABLE3/cache1 1000 16 256
< cache_dir /www1/squid-2.2.STABLE3/cache2 1000 16 256
1032d1028
< http_access allow localhost

This squid caches for an apache 1.2.5 proxy located on the same host.

There are no alarming messages in cache.log (Here they are

1999/05/21 21:06:02| Starting Squid Cache version 2.2.STABLE3 for
i386-unknown-freebs
d2.2.8...
1999/05/21 21:06:02| Process ID 15779
1999/05/21 21:06:02| With 4096 file descriptors available
1999/05/21 21:06:02| Performing DNS Tests...
1999/05/21 21:06:02| Successful DNS name lookup tests...
1999/05/21 21:06:02| helperOpenServers: Starting 5 'dnsserver' processes
1999/05/21 21:06:02| Unlinkd pipe opened on FD 14
1999/05/21 21:06:02| Swap maxSize 2048000 KB, estimated 157538 objects
1999/05/21 21:06:02| Target number of buckets: 3150
1999/05/21 21:06:02| Using 8192 Store buckets, replacement runs every 10 seconds
1999/05/21 21:06:02| Max Mem  size: 20480 KB
1999/05/21 21:06:02| Max Swap size: 2048000 KB
1999/05/21 21:06:02| Rebuilding storage in Cache Dir #0 (CLEAN)
1999/05/21 21:06:02| Rebuilding storage in Cache Dir #1 (CLEAN)
1999/05/21 21:06:02| Set Current Directory to /www/squid-2.2.STABLE3/cache1
1999/05/21 21:06:02| Loaded Icons.
1999/05/21 21:06:02| Accepting HTTP connections on port 3128, FD 39.
1999/05/21 21:06:02| Accepting ICP messages on port 3130, FD 40.
1999/05/21 21:06:02| Ready to serve requests.
1999/05/21 21:06:03| Done reading Cache Dir #1 swaplog (7421 entries)
1999/05/21 21:06:04| Done reading Cache Dir #0 swaplog (7801 entries)
1999/05/21 21:06:04| Finished rebuilding storage disk.
1999/05/21 21:06:04|     15222 Entries read from previous logfile.
1999/05/21 21:06:04|         0 Entries scanned from swap files.
1999/05/21 21:06:04|         0 Invalid entries.
1999/05/21 21:06:04|         0 With invalid flags.
1999/05/21 21:06:04|     15222 Objects loaded.
1999/05/21 21:06:04|         0 Objects expired.
1999/05/21 21:06:04|         0 Objects cancelled.
1999/05/21 21:06:04|         0 Duplicate URLs purged.
1999/05/21 21:06:04|         0 Swapfile clashes avoided.
1999/05/21 21:06:04|   Took 2 seconds (7611.0 objects/sec).
1999/05/21 21:06:04| Beginning Validation Procedure
1999/05/21 21:06:05|   Completed Validation Procedure
1999/05/21 21:06:05|   Validated 15222 Entries
1999/05/21 21:06:05|   store_swap_size = 111484k
1999/05/21 21:06:05| storeLateRelease: released 0 objects
pericles# )

The FreeBSD system has 128 MB RAM, is a P166 and has 256 MB of swap.
The caches are on 2 x IBM 4.3GB SCSI disks.

I have tried disabling the rfc1644 T/TCP extensions unsuccessfully.

The performance is *subjectively* worse. The clinet sees an initial burst of
date then nothing ..
as if something is blocked.

Your suggestions will be rceived very gratefully,

Thank you,

Yours sincerely.











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