Hi, We're looking to use Logback with one of our services to aid in metrics recording. I've noticed that the ability to use any form of buffered IO with the FileAppender class was removed. The reason cited was that significant performance testing showed little benefit in doing so. I was wondering if anybody could provide more detail concerning the environment and conditions that this testing was done. We will generally be logging entries on the order of 1000's to 10,000's entries per second. Does anybody know if Logback can handle this type of loading? Thanks. _______________________________________________ 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 office at 1 Churchill Place, London, E14 5HP. This email may relate to or be sent from other members of the Barclays Group. _______________________________________________