I see the same behavior with 2.6.0 test1. I can't imagine I'm the only person
seeing this issue, anything else I can do to help with debugging?
Chris
On Sunday 13 July 2003 11:21 pm, Chris Morgan wrote:
> Under 2.4.21:
>
> For my boot drive, ide:
>
> /dev/hdc2:
> multcount = 16 (on)
> IO_support = 1 (32-bit)
> unmaskirq = 1 (on)
> using_dma = 1 (on)
> keepsettings = 0 (off)
> readonly = 0 (off)
> readahead = 8 (on)
> geometry = 2100/255/63, sectors = 32740470, start = 996030
>
> For the scsi drives(2 drives in a raid 1 setup):
> /dev/sda:
> readonly = 0 (off)
> geometry = 17885/255/63, sectors = 287332384, start = 0
>
> And some performance numbers, maybe these are helpful:
>
> /dev/md1:
> Timing buffer-cache reads: 128 MB in 0.60 seconds =213.33 MB/sec
> Timing buffered disk reads: 64 MB in 2.22 seconds = 28.83 MB/sec
>
> /dev/hdc:
> Timing buffer-cache reads: 128 MB in 0.56 seconds =228.57 MB/sec
> Timing buffered disk reads: 64 MB in 4.33 seconds = 14.78 MB/sec
>
>
>
> Under 2.5.75:
>
> /dev/hdc:
> multcount = 16 (on)
> IO_support = 1 (32-bit)
> unmaskirq = 1 (on)
> using_dma = 1 (on)
> keepsettings = 0 (off)
> readonly = 0 (off)
> readahead = 256 (on)
> geometry = 33483/16/63, sectors = 33750864, start = 0
>
> These are with X running:
>
> /dev/hdc:
> Timing buffer-cache reads: 128 MB in 30.58 seconds = 4.19 MB/sec
> Timing buffered disk reads: 64 MB in 20.98 seconds = 3.05 MB/sec
> Hmm.. suspicious results: probably not enough free memory for a proper
> test.
>
> /dev/md1:
> Timing buffer-cache reads: 128 MB in 108.76 seconds = 1.18 MB/sec
> Timing buffered disk reads: 64 MB in 44.86 seconds = 1.43 MB/sec
> Hmm.. suspicious results: probably not enough free memory for a proper
> test.
>
> With X shutdown:
> /dev/hdc:
> Timing buffer-cache reads: 128 MB in 11.26 seconds = 11.36 MB/sec
> Timing buffered disk reads: 64 MB in 6.88 seconds = 9.30 MB/sec
> Hmm.. suspicious results: probably not enough free memory for a proper
> test.
>
> /dev/md1:
> Timing buffer-cache reads: 128 MB in 11.88 seconds = 10.77 MB/sec
> Timing buffered disk reads: 64 MB in 7.74 seconds = 8.27 MB/sec
> Hmm.. suspicious results: probably not enough free memory for a proper
> test.
>
> I'm running xf4.2.1 and the 'nv' driver.
>
> Any ideas as to what else I can look at?
>
> Thanks,
> Chris
>
> On Sunday 13 July 2003 12:45 pm, Doug McNaught wrote:
> > Chris Morgan <cmorgan@alum.wpi.edu> writes:
> > > 1.4Ghz Athlon via 82cxx chipset, software raid 1 scsi drives, currently
> > > running 2.4.21
> > >
> > > With 2.5.73/74/75(the only ones I've tried thus far) the kernel boots
> > > fine until it tries to mount the reiserfs partition on the raid1 set.
> > > Replaying the journal takes many times longer than with 2.4. Once it
> > > gets past that point the whole machine appears to be quite sluggish.
> > > Is this a known issue with reiserfs + software raid 1? What
> > > information would be useful to aid in debugging?
> >
> > What does 'hdparm' say about DMA settings on your drive under 2.5?
> >
> > -Doug
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This archive was generated by hypermail 2b29 : Tue Jul 15 2003 - 22:01:01 EST