Wouter, --On 9 June 2011 16:44:08 +0200 Wouter Verhelst <[email protected]> wrote:
> As long as the tests don't start taking hours, we'll be fine. A few > minutes isn't a big issue. OK, great. The only other one I was half planning to add was another integrity test using midsize writes - i.e. many sectors, but not larger than the normal write size. With the write-ordering stuff turned on (as it is by default) you get very low queue depths with the 'huge' integrity tests as there is such a high percentage chance of overlapped writes. With the tiny writes, you get big queue depths but practically no overlap, as overlap is statistically unlikely (and even in the dbench capture I did, it doesn't read stuff it's written before because it's all in cache, so whilst it's a good performance test it isn't a fantastic integrity test). This is just a matter of tweaking maketr to produce some smaller records and perhaps deliberately introduce a bit of overlap, as there is more chance of servers disordering reads/writes if they are of different sizes and thus take different times. No code changes to nbd-tester-client. -- Alex Bligh ------------------------------------------------------------------------------ EditLive Enterprise is the world's most technically advanced content authoring tool. Experience the power of Track Changes, Inline Image Editing and ensure content is compliant with Accessibility Checking. http://p.sf.net/sfu/ephox-dev2dev _______________________________________________ Nbd-general mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/nbd-general
