Package: qa.debian.org Severity: normal User: [email protected] Usertags: debsources
The "update statistics" stage of Debsources updated is currently too slow, taking ~12 minutes on the current sources.d.n machine. It could be easily optimized by avoiding redoing queries for each live suites (currently: 9), where each query will do a sequential scan (due to count(*), despite "index mostly scan") over the same data. Instead, we can use GROUP BY queries, taking at once stats for all suites. (See proof of concept and benchmarks available in doc/update-stats-query.bench.sql) -- System Information: Debian Release: jessie/sid APT prefers testing APT policy: (500, 'testing'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 3.14-2-amd64 (SMP w/4 CPU cores) Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
