Messages in this thread | | | Date | Wed, 9 Feb 2000 17:24:42 -0500 (EST) | From | Alexander Viro <> | Subject | Re: [PATCH] spinlock metering (2.3.42) |
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On Wed, 9 Feb 2000, John Hawkes wrote:
> The kernel_flag is still the biggest culprit in 2.3.28 and it accounts > for > almost all of the witnessed wait-time cycles (157msec of the 160msec > total). A call in ext2_get_block() accounts for 45msec of this 157msec. > The largest hold-time occurs in do_close() -- that 15msec mentioned
Almost definitely dput() work.
> earlier -- with a mean hold-time of 59usec (microsec). Other long holds > are done by sys_unlink() (10msec max), sys_open() (5.5msec), and Ditto. Interesting... > sys_execvs() (2msec).
Most likely we are dealing with dcache stuff. Sorry, it will have to wait. Sigh...
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