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- Newsgroups: comp.os.linux
- Path: sparky!uunet!think.com!yale.edu!news.yale.edu!yar.trincoll.edu!friedman
- From: friedman@starbase.trincoll.edu (Mark A. Friedman)
- Subject: Performance Enhanced or Worsened by Cache Addition? On Zeos 486DX2-66 system?
- Message-ID: <FRIEDMAN.93Jan7000112@khan.trincoll.edu>
- Sender: usenet@starbase.trincoll.edu (SACM Usenet News)
- Reply-To: mark.friedman@mail.trincoll.edu
- Organization: Trinity College, Hartford, CT
- Date: Thu, 7 Jan 1993 04:59:07 GMT
- Lines: 29
-
- On some PC-Clone systems, when running some versions of Unix, users
- have found that performance actually increases after disabling the
- hardware cache perhaps because the cacheing algorithm in the kernel
- was better tuned to Unix access than the hardware cacheing algorithms.
-
- Can anyone argue through an understanding of Linux's kernel and
- hardware cacheing, or through experience, or best yet actual
- measurements whether the performance of Linux with X, and say GNU
- programs such as emacs and gcc increases or decreases with the
- addition of a hardware cache?
-
- In particular, I'd be interested in knowing if any Zeos 486DX2-66
- system users have measured/experienced their systems running Linux
- with and without the 128K and 256K hardware caches and experie nced a
- significant difference in performance in either direction.
-
- I am trying to decide whether to purchase a 128K cache upgrade to go
- with a system with 16M RAM.
-
- Thanks,
-
- -- Mark
- --
-
-
- Mark A. Friedman mark.friedman@mail.trincoll.edu
- Engineering and Computer Science or friedman@starbase.trincoll.edu
- Trinity College Phone: (203) 297-2519
- Hartford, Connecticut 06106 Fax: (203) 297-2569
-