Date: Sat, 18 Jun 2005 01:43:53 +0400 From: "Eugene L. Vorokov" <vorokov@gmail.com> To: freebsd-questions@freebsd.org Subject: disk cache tuning Message-ID: <50d6c40d0506171443763ff58f@mail.gmail.com>
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Hello. I have a box with FreeBSD 5.4, where disk subsystem is a bottleneck. It runs several applications which access huge number of files, usually sma= ll. They do not require a lot of memory, network I/O is also not very intensive= . I have read tuning(7), enabled softupdates, noatime and such. But I have an impression that most of the memory (1Gb) is not really used, while it could= be used for disk cache. top(1) reports about 800Mb as inactive, and reading 200-300Mb of information from disk still causes a lot of disk activity. How can I increase the amount of memory used for disk cache without touchin= g other subsystems ? As far as I understand, simply increasing MAXUSERS is no= t a good idea, because it will also increase NMBCLUSTERS and such, which I do not really want. Please Cc: me as I'm not on this list. Regards, Eugene
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