On Mon, Nov 10, 2008 at 08:44:13AM -0000, [EMAIL PROTECTED] wrote: > > > Now, rrdcached can have more simultaneous I/O requests into > > the kernel. > > This may allow the kernel to re-order disk writes, resulting > > in better disk throughput. In practice, throughput is > > increased by 2-3x. > > Before I integrate this with my own code, could you propose some tests > that I should run with and without this code to measure the difference?
Let your rrdcached fill up with updates for at least "-w". Then, issue a FLUSHALL and see how long it takes the queue to get back to 0. For best results, use "-z 0" and let the daemon fill for slightly less than "-w"... then the jitter shouldn't affect your value size per rrd. -- kevin brintnall =~ /[EMAIL PROTECTED]/ > Regards, > > Daniel > _______________________________________________ > > This e-mail may contain information that is confidential, privileged or > otherwise protected from disclosure. If you are not an intended recipient of > this e-mail, do not duplicate or redistribute it by any means. Please delete > it and any attachments and notify the sender that you have received it in > error. Unless specifically indicated, this e-mail is not an offer to buy or > sell or a solicitation to buy or sell any securities, investment products or > other financial product or service, an official confirmation of any > transaction, or an official statement of Barclays. Any views or opinions > presented are solely those of the author and do not necessarily represent > those of Barclays. This e-mail is subject to terms available at the following > link: www.barcap.com/emaildisclaimer. By messaging with Barclays you consent > to the foregoing. Barclays Capital is the investment banking division of > Barclays Bank PLC, a company registered in England (number 1026167) with its > registered off ice at 1 Churchill Place, London, E14 5HP. This email may relate to or be sent from other members of the Barclays Group. > _______________________________________________ _______________________________________________ rrd-developers mailing list [email protected] https://lists.oetiker.ch/cgi-bin/listinfo/rrd-developers
