Re: Scsipi guru needed...

2010-08-04 Thread Michael L. Hitch
sfer rate, so how that is working with no write cache on the controller, I don't really know. I'll probably try my FreeBSD Live CD sometime again with this DL360 and see how it does. -- Michael L. Hitchmhi...@montana.edu Computer Consultant Information Technology Center Montana State UniversityBozeman, MT USA

Re: Scsipi guru needed...

2010-08-07 Thread Michael L. Hitch
On Wed, 4 Aug 2010, Michael L. Hitch wrote: It appears that PERIPH_UNTAG gets set in periph_flags, and scsipi_run_queue() only sends one command at a time to the adapter. If I comment out the check for PERIPH_UNTAG, then I see the adapter able to accept the full number of commands. I'

scsipi mid-layer, tagged queueing, and ciss(4)

2010-08-29 Thread Michael L. Hitch
it has the scsipi_periph address available in xs_periph), but that involves testing on each command. -- Michael L. Hitchmhi...@montana.edu Computer Consultant Information Technology Center Montana State UniversityBozeman, MT USA

Re: scsipi mid-layer, tagged queueing, and ciss(4)

2010-08-29 Thread Michael L. Hitch
n those failing commands, so I need to check that again. -- Michael L. Hitchmhi...@montana.edu Computer Consultant Information Technology Center Montana State UniversityBozeman, MT USA

Re: scsipi mid-layer, tagged queueing, and ciss(4)

2010-09-07 Thread Michael L. Hitch
shed properly on shutdown at the moment. -- Michael L. Hitchmhi...@montana.edu Computer Consultant Information Technology Center Montana State UniversityBozeman, MT USA

Re: mpt Serious performance issues

2010-12-22 Thread Michael L. Hitch
ain, I can try to figure out how to make the driver enable tagged queueing and see if that makes any difference, but that blade is currently being used for other testing with a much highor priority than my playing around. -- Michael L. Hitchmhi...@montana.edu Computer Consu

Re: Problems with TCP Window size under NetBSD-5???

2010-12-23 Thread Michael L. Hitch
g, or the buffers are being lost or unused, somehow. Still poking. The window sizes look good to me - they are scaled by 8 in one direction, and tcpdump does not keep track of the scale factor, so it display the raw value in the packet. -- Michael L. Hitch

Re: Problems with TCP Window size under NetBSD-5???

2010-12-23 Thread Michael L. Hitch
fused here. Perhaps I should have said the window size was scaled 8 times (by shifting 3). -- Michael L. Hitchmhi...@montana.edu Computer Consultant Information Technology Center Montana State UniversityBozeman, MT USA

Re: FIXED: mpt Serious performance issues

2011-02-09 Thread Michael L. Hitch
f the OpenBSD driver). -- Michael L. Hitchmhi...@montana.edu Computer Consultant Information Technology Center Montana State UniversityBozeman, MT USA

Re: FIXED: mpt Serious performance issues

2011-02-09 Thread Michael L. Hitch
ulated, but I have no understanding of that part of the mpt driver. I've been curious as to what the actual value of maxq is. -- Michael L. Hitchmhi...@montana.edu Computer Consultant Information Technology Center Montana State UniversityBozeman, MT USA

Re: FIXED: mpt Serious performance issues

2011-02-09 Thread Michael L. Hitch
On Wed, 9 Feb 2011, Michael L. Hitch wrote: That would be because both FreeBSD and OpenBSD have totally rewritten their driver. It did not appear that either driver clears the SCSI DEVICE page. Started looking through the FreeBSD driver, and they do reset the SCSI DEVICE pages - but only

Re: FIXED: mpt Serious performance issues

2011-02-09 Thread Michael L. Hitch
On Wed, 9 Feb 2011, Thor Lancelot Simon wrote: But ciss uses ld(4), doesn't it? It's not a SCSI adapter? It looks like a SCSI adapter, so uses sd(4). -- Michael L. Hitchmhi...@montana.edu Computer Consultant Information Technology Center Montana State

Re: 5.1 RAID5 write performance

2011-05-05 Thread Michael L. Hitch
e buffer to the raidframe driver. If the data is aligned on a strip boundary, then the raidframe driver could write that directly to the disk (or perhaps just a copy to a raidframe buffer which would then be written directly to the disk). -- Michael L. Hitchmhi...@monta

Re: 5.x filesystem performance regression

2011-06-04 Thread Michael L. Hitch
hich would account for the time difference. -- Michael L. Hitchmhi...@montana.edu Computer Consultant Information Technology Center Montana State UniversityBozeman, MT USA

Re: write alignment matters?

2011-06-21 Thread Michael L. Hitch
the Amiga driver with similar chips, and I don't remember if there was anything special needed with odd addresses. Next time I've got my Amiga on, I'll try the test program there. I've also got a 53c875 in an Alpha that I plan on testing. -- Michael L. Hitch

Re: write alignment matters?

2011-06-22 Thread Michael L. Hitch
On Tue, 21 Jun 2011, Michael L. Hitch wrote: Next time I've got my Amiga on, I'll try the test program there. I've also got a 53c875 in an Alpha that I plan on testing. Running the test program on an Alpha with an onboard isp(4), it appears to run correctly. It also

Re: rsync very slow with current kernel (select issue?)

2011-07-27 Thread Michael L. Hitch
ng something similar - the echo response should have been received and have woken up the ping process, but it didn't seem to do that and the pine process didn't get scheduled until another cpu-bound process had run a couple of 100ms schedule intervals. Mike -- Michael L. Hitch

Re: Raidframe low I/O for parity rebuild, but when accessed through rraid* devices

2015-06-13 Thread Michael L. Hitch
en 64k write on one, hence the parity rebuild takes quite some time. I'd check if the write cache is disabled on the 2nd disk. That typically makes the writes much slower. You can use dkctl or atactl to check the current cache status and change it. Mike --- Micha

Re: WAPBL/cache flush and mfi(4)

2012-08-25 Thread Michael L. Hitch
river did not do for some time. Mike -- Michael L. Hitchmhi...@montana.edu Computer Consultant Information Technology Center Montana State UniversityBozeman, MT USA

Re: SATA write performance problems (on HP MicroServer)

2013-01-01 Thread Michael L. Hitch
nything sitting in memory). Write caching could also disrupt any ordered writes done by the OS, which may get data written to the disk in an order that could lead to corruption. Mike -- Michael L. Hitchmhi...@montana.edu Computer Consultant Information Technology Cente

Re: "adapter resource shortage"?

2013-03-05 Thread Michael L. Hitch
the scsipi layer would try to use (rev 1.17 of src/sys/dev/ic/mpt_netbsd.c, which should be in the 5.2 branch). You might want to try reducing the scsipi openings a couple more and see if that helps. Mike --- Michael L. Hitchmhi...@montana.edu Operations Consulting, I