| To: | Christoph Hellwig <hch@xxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: XFS doesn't correctly account for IO-Wait for directory reading |
| From: | Matthias Schniedermeyer <ms@xxxxxxx> |
| Date: | Wed, 23 Jan 2008 15:24:42 +0100 |
| Cc: | xfs@xxxxxxxxxxx |
| In-reply-to: | <20080123121741.GA24405@xxxxxxxxxxxxx> |
| References: | <20080123110027.GA10366@xxxxxxx> <20080123121741.GA24405@xxxxxxxxxxxxx> |
| Sender: | xfs-bounce@xxxxxxxxxxx |
| User-agent: | Mutt/1.5.17+20080114 (2008-01-14) |
On 23.01.2008 12:17, Christoph Hellwig wrote: > > Try this one-liner patch which should give you much better I/O wait > reporting. There's some more I/O waits hidden in the log code, but to > fix this we'd need to dig into the sv_t abstraction. Given that it only > has four users left I'm probably going to simply remove it and fix the > I/O wait accounting while I'm at it. Either with 2.6.23.12 & 2.6.24-git-HEAD, and the shown line changed, the %wa reported by top is still at 0.0 Bis denn -- Real Programmers consider "what you see is what you get" to be just as bad a concept in Text Editors as it is in women. No, the Real Programmer wants a "you asked for it, you got it" text editor -- complicated, cryptic, powerful, unforgiving, dangerous. |
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