Eliezer Croitoru-2 wrote > I am happy to release the new RPM for squid version 3.3.10.(links at the > bottom of the article) > > The new release includes the big addition of cache_dir type *rock*, big > thanks for Alex Rousskov work on rock ssl-bump and many other small and > big things that makes squid what it is! > > What is *rock* cache_dir type? What it gives me? > Speed! and SMP support for cache_dir. > > A small introduction to FileSystems and Squid: > Squid uses UFS\AUFS types cache directories for a very long time in a > very nice way to overcome and try to beat the OS and the FileSystems > limits in order to allow millions of objects\files to be cached. > > The UFS type that can be used with either reiserFS, ext4 or any other FS > you can think about that is supported by the OS. > There are limits to each and every FS like the reiserFS that was > designed to work with lots of small\tiny files and does that in a very > nice way. > > A FS far as it is perfected it is still a *FileSystem* which is very > global and has a design which effects directly on the performance of > itself. > An example for this point is being demonstrated when creating a file on > a FS can be quite easy in one while erasing a file can result in a very > CPU and I\O intensive task on some FS. > If you are interested in understanding a bit more about FS complexity > you can watch Ric Wheeler at his video and presentation: > * video: > http://video.linux.com/videos/one-billion-files-pushing-scalability-limits-of-linux-file-systems > * or: http://www1.ngtech.co.il/squid/videos/37.webm > > * pdf: > http://www.redhat.com/summit/2011/presentations/summit/decoding_the_code/thursday/wheeler_t_0310_billion_files_2011.pdf > * or: > http://www1.ngtech.co.il/squid/fs/wheeler_t_0310_billion_files_2011.pdf > > > What heavy lifting do the FS and squid needs to handle with? > UFS\AUFS actually uses the FileSystem in order to store for an example > 200 requests per second which 50 of them are not even cacheable so 150 > requests per second to be placed in files in the FileSystem based on the > OS. > 60 secs doubles 60 minutes doubles 100 requests per second(yes I reduced > it..) it means creation of about 3600 files on the FS per hour for a > tiny Small Office squid instance. > While some squid systems can sit on a very big machine with more then > one instance that has more then 500 requests per second per instance, > the growth can be about 14,400,000 per hour. > > It do sounds like a very big number but a MegaByte is about 1 Million > bytes and today we are talking about speeds which exceeds 10Gbps.. > > So there might be another design that is needed in order to store all > these HTTP objects and which rock comes to unleash. > > In the next release I will try to describe it in more depth. > > * note that the examples do demonstrate the ideas in a wild way. > > The RPMS at: > http://www1.ngtech.co.il/rpm/centos/6/x86_64/ > > The package includes 3 RPMs one for the squid core and helpers, the > other is for debuging and the third is the init script. > http://www1.ngtech.co.il/rpm/centos/6/x86_64/squid-3.3.10-1.el6.x86_64.rpm > http://www1.ngtech.co.il/rpm/centos/6/x86_64/squid-sysvinit-3.3.10-1.el6.x86_64.rpm > http://www1.ngtech.co.il/rpm/centos/6/x86_64/squid-debuginfo-3.3.10-1.el6.x86_64.rpm > > To Each and everyone of them there is an asc file which contains PGP and > MD5 SHA1 SHA2 SHA256 SHA384 SHA512 hashes. > > I also released the SRPM which is very simple at: > http://www1.ngtech.co.il/rpm/centos/6/x86_64/SRPM/squid-3.3.10-1.el6.src.rpm > > * I do hope to release in the next weeks a RPM of 3.HEAD build for ALPHA > testers of the newest bug fixes and squid improvements. > > * Sorry that the I686 release is not out yet but since I do not have on > me a I686 running OS it will be added later to the repo. > > Eliezer nice news , i would like to ask about mounting options related to rock , is it critical for performance ?? ' i read wiki , but no one care with it !!! as an example machine with 7 hardisks ssd , each hardisk with 90 G storage , and with about 4000 req/sec on squid with smp. does squid 3.3.10 better than squid 3.3.9 for rock support and speed ??? if not big updater i prefer staying with 3.3.9 regards ----- Dr.x -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/Squid-3-3-10-is-available-tp4663209p4663229.html Sent from the Squid - Users mailing list archive at Nabble.com.
