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Message-ID: <652016d30612212156g604d0d15y7fbd27c01e2aab1e@mail.gmail.com> Date: Fri, 22 Dec 2006 11:41:47 +0545 From: "Manish Regmi" <regmi.manish@...il.com> To: "Bhanu Kalyan Chetlapalli" <chbhanukalyan@...il.com> Cc: kernelnewbies@...linux.org, linux-kernel@...r.kernel.org Subject: Re: Linux disk performance. On 12/22/06, Bhanu Kalyan Chetlapalli <chbhanukalyan@...il.com> wrote: > > > > Thanks for the suggestion but the performance was terrible when write > > cache was disabled. > > Performance degradation is expected. But the point is - did the > anomaly, that you have pointed out, go away? Because if it did, then > it is the disk cache which is causing the issue, and you will have to > live with it. Else you will have to look elsewhere. oops, sorry for incomplete answer. Actually i did not tested thoroughly but my initial tests showed some bumps and serious performance degradation. But anyway there was still some bumps... :( (sequence)(channel)(write time in microseconds) 0 0 6366 0 1 9949 0 2 10125 0 3 10165 0 4 11043 0 5 10129 0 6 10089 0 7 10165 0 8 71572 0 9 9882 0 10 8105 0 11 10085 -- --------------------------------------------------------------- regards Manish Regmi --------------------------------------------------------------- UNIX without a C Compiler is like eating Spaghetti with your mouth sewn shut. It just doesn't make sense. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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