Hello -=Curtis=-, On Tuesday, August 2, 2005 at 9:54:42 PM -=Curtis=- [C] wrote:
C> However, I don't do full synchronization with server and my folders. I C> think this may be the source of the heavy requesting. It shouldn't, unless one is connected to the server using a 100 or 1000 MBit/s connection (which can, of course, exceed the bandwith the server is able to handle from hard disk). C> Full syncing with folders for 3 accounts using 3 connections each C> is hefty, though I agree that it shouldn't bring a server to its C> knees. ACK. It shouldn't. Lets assume you're using a 5 MBit/s connection to the server, which is quite much, unless you're directly nearby the data center and have a dedicated 100 MBit/s uplink to the data center. Assuming there is *zero* overhead for the connection the hard disk would have to hand out only *5 MBit/s* when you synchronize your IMAP account. No matter how many connections you open to the server, they sum up to a maximum of *these 5 MBit/s*, they can't exceed this limit. 5 MBit/s equals to 610 kByte/s, current IDE-HDDs can handle up to 50 MByte/s (51200 kByte/s which is nearly 84 times faster than necessary for this connection)! SCSI-HDDs, especially when assembled into to a RAID (which is appropriate IMNSHO for a server which is doing e-mail, web and database) can handle even more, the limit is set by PCI bus: 33MHz*32Bit = 1056000000 Bit/s = 1000 MByte/s minus overhead for protocols; lets assume a worst cast rate of 200 MByte/s. So I still don't see the necessity for a server going to it's knees when a single IMAP-connection asks for it's mails. Unless, of course, Sean has set up some "magic stuff" that makes the server search through all the 600 MByte of mails, which would cause the server to go through all of them and put some significant load on the server. But full synchronization only doesn't do this kind of setup, at least not I could observe it over here. -- Regards Peter Palmreuther (The Bat! v3.51.10 on Windows XP 5.1 Build 2600 Service Pack 2) Backbite, v.: To speak of a man as you find him, when he can't find you. - Ambrose Bierce - ________________________________________________________ Current beta is 3.51.10 | 'Using TBBETA' information: http://www.silverstones.com/thebat/TBUDLInfo.html IMPORTANT: To register as a Beta tester, use this link first - http://www.ritlabs.com/en/partners/testers/
