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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Heh. As usual. The only solution is uses redirector + DB + blocklists. For example, ufdbguard. PS. What an stupid idea - uses regex for this task without CRAY.... :)))))))) 17.06.2016 1:11, Alfredo Rezinovsky пишет: > Well.. I tried. > I need to ban 8613 URLs. Because a law. > > If I put one per line in a file and set the filename for an url_regex acl it works. But when the traffic goes up the cpu load goes 100% (even using workers) and the proxy turns unusable. > > I tested and saw my squid can't parse regexes with more than 8192 characters. > I managed to combine the 8000 uris in 34 regexes using a ruby gem, and the cpu load stays almost at the same level it is without any acl (same traffic). > > The problem is that of the 34 regexes 33 works fine and 1 matches everything. > > "http://something" matches. > > the regex is: > > 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> > Testing the regex in regex101 it should not match. > > My squid was compiles with gnu regex > > Squid Cache: Version 3.5.17 > Service Name: squid > configure options: '--prefix=/opt/sepia/distro/squid' '--sysconfdir=/var/lib/sepia/' '--disable-auth' '--disable-auto-locale' '--disable-cache-digests' '--disable-cpu-profiling' '--disable-debug-cbdata' '--disable-delay-pools' '--disable-devpoll' '--disable-ecap' '--disable-esi' '--disable-eui' '--disable-external-acl-helpers' '--disable-follow-x-forwarded-for' '--disable-forw-via-db' '--enable-gnuregex' '--disable-htcp' '--enable-icap-client' '--disable-ident-lookups' '--enable-internal-dns' '--disable-ipf-transparent' '--disable-ipfw-transparent' '--disable-ipv6' '--disable-leakfinder' '--disable-pf-transparent' '--disable-poll' '--disable-select' '--disable-snmp' '--with-openssl' '--disable-stacktraces' '--disable-translation' '--disable-url-rewrite-helpers' '--disable-wccp' '--disable-wccpv2' '--disable-win32-service' '--disable-x-accelerator-vary' '--disable-icmp' '--disable-storeid-rewrite-helpers' '--enable-async-io' '--enable-disk-io' '--enable-epoll' '--enable-http-violations' '--enable-inline' '--enable-kill-parent-hack' '--enable-linux-netfilter' '--enable-log-daemon-helpers' '--enable-removal-policies' '--enable-storeio' '--enable-unlinkd' '--enable-x-accelerator-vary' '--enable-zph-qos' '--with-default-user=nobody' '--with-logdir=/var/log/sepia' '--with-pthreads' '--with-included-ltdl' '--with-pidfile=/var/lib/sepia/squid.pid' '--with-netfilter-conntrack' '--disable-arch-native' --enable-ltdl-convenience > > Testing with more lines of smaller regexes sometimes leads to the same problem. One regex matching everything > > 2016-04-27 8:32 GMT-03:00 Alfredo Rezinovsky <alfrenovsky@xxxxxxxxx <mailto:alfrenovsky@xxxxxxxxx>>: > > I saw in debug log that when an ACL has many regexes each one is compared sequentially. > > If I have > > www.facebook.com <http://www.facebook.com> > facebook.com <http://facebook.com> > www.google.com <http://www.google.com> > google.com <http://google.com> > > If will be faster to check just ONE optimized regex like (www\.)?(facebook|google).com than the previous three? > > I'm really talking about optimizing about 3000 url regexes in one huge regex because comparing each and every url to 3000 regexes is too slow. > > I know using (www\.facebook\.com)|(facebook\.com)|(www\.google\.com)|(google\.com) with PCRE will produce the same optimized result as (www\.)?(facebook|google)\.com. Squid uses GnuRegex. Does GNURegex lib optimizes this as well ? > > > -- > Alfrenovsky > > > > > -- > Alfrenovsky > > > _______________________________________________ > squid-users mailing list > squid-users@xxxxxxxxxxxxxxxxxxxxx > http://lists.squid-cache.org/listinfo/squid-users -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJXYvtVAAoJENNXIZxhPexGMzQH/25lP8nVMYP7y5UDQdZbEAzg MD5L/zwUK9XUzT4FlgpkJjYmV/mkADsIV7bgs3fjsK6mWTNwS+IaRoo/gnziFAE0 sS9k2Z5fm+LHkUxC6YaCC1kHSNC9WFKdl8DQLTlvnkjuootJkPvZFxmzDFsvPqtB ZIqX/F+PfJtuS0vwAEO0j6YoI+XqsWk6GacAyAf55H+VUKf3yCqgNj502UQF8QYf K9s/nXuydQ/7EBTMBHqmFqVyfuNc4lVtg/V4rVgB62M2sjeLrTvXU8zEQSUm0tLV ea/CAv0runAzjfdKWOXn22aSkvzfoI13DV+wXEadshXWmU2QzdXQaQnyR8gkRG4= =aHYr -----END PGP SIGNATURE----- |
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