Re: high load, no bottleneck

[manu%netbsd.org@localhost (Emmanuel Dreyfus)]

Emmanuel Dreyfus <manu%netbsd.org@localhost> wrote:

> Thank you for saving my day. But now what happens?
> I note the SATA disks are in IDE emulation mode, and not AHCI. This is
> something I need to try changing:

Switched to AHCI. Here is below how hard disks are discovered (the relevant raid
is RAID1 on wd0 and wd1)

In this setup, vfs.wapbl.flush_disk_cache=1 still get high loads, on both 6.0
and -current. I assume there must be something bad with WAPBL/RAIDframe

ahcisata0 at pci0 dev 31 function 2: vendor 0x8086 product 0x2922 (rev. 0x02)
ahcisata0: interrupting at ioapic0 pin 17
ahcisata0: AHCI revision 1.20, 4 ports, 32 slots, CAP
0xe322ffe3<SXS,EMS,CCCS,PSC,SSC,PMD,SPM,ISS=0x2=Gen2,SCLO,SAL,SSNTF,SNCQ,S64A>
atabus2 at ahcisata0 channel 0
atabus3 at ahcisata0 channel 1
atabus4 at ahcisata0 channel 2
atabus5 at ahcisata0 channel 3
ahcisata0 port 0: device present, speed: 3.0Gb/s
ahcisata0 port 1: device present, speed: 3.0Gb/s
ahcisata0 port 2: device present, speed: 3.0Gb/s
ahcisata0 port 3: device present, speed: 3.0Gb/s
wd0 at atabus2 drive 0
wd0: <WDC WD5000AAJS-55A8B0>
wd0: drive supports 16-sector PIO transfers, LBA48 addressing
wd0: 465 GB, 969021 cyl, 16 head, 63 sec, 512 bytes/sect x 976773168 sectors
wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
wd0(ahcisata0:0:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
(using DMA)
wd1 at atabus3 drive 0
wd1: <WDC WD5000AAJS-55A8B0>
wd1: drive supports 16-sector PIO transfers, LBA48 addressing
wd1: 465 GB, 969021 cyl, 16 head, 63 sec, 512 bytes/sect x 976773168 sectors
wd1: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
wd1(ahcisata0:1:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
(using DMA)
wd2 at atabus4 drive 0
wd2: <WDC WD5000AAJS-55A8B0>
wd2: drive supports 16-sector PIO transfers, LBA48 addressing
wd2: 465 GB, 969021 cyl, 16 head, 63 sec, 512 bytes/sect x 976773168 sectors
wd2: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
wd2(ahcisata0:2:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
(using DMA)
wd3 at atabus5 drive 0
wd3: <WDC WD5000AADS-00S9B0>
wd3: drive supports 16-sector PIO transfers, LBA48 addressing
wd3: 465 GB, 969021 cyl, 16 head, 63 sec, 512 bytes/sect x 976773168 sectors
wd3: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
wd3(ahcisata0:3:0): using PIO mode 4, DMA mode 2, Ultra-DMA mode 6 (Ultra/133)
(using DMA)


-- 
Emmanuel Dreyfus
http://hcpnet.free.fr/pubz
manu%netbsd.org@localhost