Messages in this thread | | | Date | Fri, 4 Dec 1998 15:17:53 +0000 (GMT) | From | Tigran Aivazian <> | Subject | Re: disks stats through /proc |
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Thanks, I have got both of them. I will have a detailed look at them this weekend. However, instead of doing it in /proc/stat I will try to move it into /proc/partitions - since we have /proc/partitions already (thanks to Andries!) we might as well enhance it to include partition-level stats.
I will also study and play with Stephen Tweedie's sard stuff which Alan Cox mentioned yesterday.
I think, as long as it does not harm performance, detailed performance indicators in /proc would benefit everybody.
Regards, Tigran
On Fri, 4 Dec 1998 kfrench@unitedis.com wrote:
> I had fixed up the scsi/ide/4drive limit a while ago, but it was never > included. It was around the IO-APIC introduction time (i.e. more > important things were 'broken') and there were rumblings of a code freeze. > > Grab > http://pebbles.net/~kfrench/linux/blockstatarray-2.1.86.gz > http://pebbles.net/~kfrench/linux/blockstatdirect-2.1.86.gz > > Each one does the same thing, but does it differently (apply *only* one of > these, not both). 'array' hold a resizeable array for each device, and > 'direct' creates a large array up-front for performance reasons. I like > 'array' and Mark Lord likes 'direct'. It'll need a little fixing up to > get it going on 2.1.130, but it shouldn't be a big deal. It's also > trivial to do this on a partition level - it's just a matter of removing > the switch() statement which intentionally removes the per-partition parts > of a device #. > > -kf > > On Thu, 3 Dec 1998, Tigran Aivazian wrote: > > > IMHO, this should be done on a fine-grained (partition level) rather than > > coarse (drive) level. There is enough information in > > ll_rw_blk.c/add_request() to do it now but, of course, kernel_stat > > structure will have to be seriously modified. > > > > There is something frustrating about the quality and speed of Linux > > development. I.e. the quality is too high and the speed is too high, in > > other words, I can implement this disk stat feature, but I bet someone else > > has already done it and is just about to release his patch to Linus soon... > > heh >
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