** Changed in: multipath-tools (Ubuntu Xenial) Status: New => Won't Fix
-- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs https://bugs.launchpad.net/bugs/1634161 Title: Default multipath policy is round-robin, shows considerably worse read throughput compared to using service-time Status in Ubuntu on IBM z Systems: Fix Released Status in multipath-tools package in Ubuntu: Fix Released Status in multipath-tools source package in Xenial: Won't Fix Bug description: ---Problem Description--- Default multipath policy is round-robin, shows considerably worse read throughput compared to using service-time Contact Information = Barbara Mundle, barbara.mun...@de.ibm.com ---uname output--- 4.4.0-21-generic Machine Type = z systems: Type 2964, Model 701 NC9 ---Debugger--- A debugger is not configured ---Steps to Reproduce--- Conducting throughput measurements with both policies shows the difference Userspace tool common name: multipath-tools The userspace tool has the following bit modes: 64-bit Userspace rpm: multipath-tools_0.5.0+git1.656f8865-5ubuntu2.2_s390x.deb Userspace tool obtained from project website: na *Additional Instructions for Barbara Mundle, barbara.mun...@de.ibm.com: -Attach ltrace and strace of userspace application. Throughput numbers with FIO for sequential read (in KBPS) with multipath policies service.time/round-robin (varying with number of jobs from 1 - 64): service-time round-robin 1 3193030 2917220 2 5248430 5020375 4 8453570 6438140 8 9708690 6444175 16 9712100 6448080 32 9714035 6450905 64 9718355 6461650 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-z-systems/+bug/1634161/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~group.of.nepali.translators Post to : group.of.nepali.translators@lists.launchpad.net Unsubscribe : https://launchpad.net/~group.of.nepali.translators More help : https://help.launchpad.net/ListHelp