Testing amazon and rackspace instances: kernel compile time and “how much it costs to compile kernel on $instance”, and IO tests using IOzone — in short: rackspace is cheaper/better, about 2x on average across the board. Note about “m1.small” i.e. s…
Posted in amazon, aws, benchmark, cloudcomputing, ec2, for:collidr, hosting, performance, rackspace, servers | Comments Off | permalink
Full Text Search benchmark, Oracle vs Postgres, on 2x Quad core Xeon, 8G RAM, 2 SSDs x RAID 1. Pg is being slightly faster when query contains several words, once word count increases, oracle leaps ahead (suggesting a more mature FTS implementation)
Posted in benchmark, comparison, database, dba, Linux, oracle, performance, postgresql, search | Comments Off | permalink
Netfilter: Making large iptables rulesets scale
Posted in iptables, kernel, Linux, network, performance, sysadmin | Comments Off | permalink
A way to detect BT protocol traffic — instead of looking at every packet, traffic to torrent tracker websites is redirected (via divert(4) ) and then analyzed. Analyzer script (PERL) produces the src_ip, dst_ip, dst_port triplet, this info can be us…
Posted in bittorrent, development, divert, Linux, network, performance, Perl, programming, system | Comments Off | permalink
a lot of interesting details about using flash drives as cache and high-perf block io devices (notes from google talk given at UCSD)
Posted in architecture, cache, cs, disk, flah, hardware, high_load, Linux, performance, storage | Comments Off | permalink
“There’s very little information about PostgreSQL buffer cache
Posted in article, database, dba, performance, postgres, postgresql, tuning | Comments Off | permalink
very cool demo. Reddis command prompt in AJAX
Posted in browser, database, db, demo, key, key_value_store, nosql, online, performance, redis, tutorial, web, web2.0 | Comments Off | permalink
Notes performance of the recent linux kernels on Nehalem hadrware, linux kernel bridges, DCCP protocol, visualization (cgroups), configuration protocol, etc.
Posted in development, kernel, Linux, network, performance | Comments Off | permalink
somewhat useful comparative review
Posted in benchmark, c, comparison, java, jvm, language, performance, programming | Comments Off | permalink
all sorts of system and software engineering info from Twitter. Also see http://twitter.com/about/opensource
Posted in blog, development, engineering, for:collidr, high_load, performance, sysadmin, twitter, web2.0 | Comments Off | permalink
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Konstantin Antselovich (c) 2004-2011
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