Displaying 6 results from an estimated 6 matches for "prefetch_disable".
2013 Jul 01
3
Problems booting into ZFS on recent stable/9
...71 on isa0
uart0: <16550 or compatible> at port 0x3f8-0x3ff irq 43 on isa0
uart0: console (9600,n,8,1)
uart1: <16550 or compatible> at port 0x2e8-0x2ef irq 43 on isa0
ZFS NOTICE: Prefetch is disabled by default if less than 4GB of RAM is present;
to enable, add "vfs.zfs.prefetch_disable=0" to /boot/loader.conf.
ZFS filesystem version: 5
ZFS storage pool version: features support (5000)
Timecounter "tick" frequency 500000000 Hz quality 1000
Event timer "tick" frequency 500000000 Hz quality 1000
Timecounters tick every 1.000 msec
usbus0: 12Mbps Full Speed US...
2012 Jul 16
3
8.2 ->8.3 regression on disk writes
Hello,
using 8.2 the machine runs fine,
using 8.3 or higher, not so much.
In laymans terms,
if I do "too many" writes/time just once, the machine can't do any disk
access for a couple of hours.
As in: What's already running stays running, no crashes or anything,
but as soon as I need to read from disk (login, start program not cached
in memory from previous run),
I'm
2012 Sep 27
1
CAM Target Layer and Linux (continued)
...BSDZFS004 ORA_ASM_04
lun_type=0
num_threads=14
file=/dev/zvol/tank/oracle_asm_04
Then we ran some tests using Oracle's ORION benchmark tool from the Linux host.
We ran one test which passed successfully,
then I've just disabled zfs prefetch -> "vfs.zfs.prefetch_disable=1"
and rerun the test, which failed due to this error.
On the FreeBSD side:
(0:3:0:1): READ(10). CDB: 28 0 84 f9 58 0 0 4 0 0
(0:3:0:1): Tag: 0x116220, Type: 1
(0:3:0:1): CTL Status: SCSI Error
(0:3:0:1): SCSI Status: Check Condition
(0:3:0:1): SCSI sense: NOT READY asc:4b,0 (Data phase err...
2009 May 01
2
current zfs tuning in RELENG_7 (AMD64) suggestions ?
I gave the AMD64 version of 7.2 RC2 a spin and all installed as
expected off the dvd
INTEL S3200SHV MB, Core2Duo, 4G of RAM
In the past it had been suggested that for zfs tuning, something like
vm.kmem_size_max="1073741824"
vm.kmem_size="1073741824"
vfs.zfs.prefetch_disable=1
However doing a simple test with bonnie and dd, there does not seem
to be very much difference in 4 configs. Am I better off just with
the defaults ? The machine is acting as anoffline storage site, so a
steady stream of data via rsync/ssh
The writes are all within the normal variance of t...
2008 Sep 30
3
recommended setup for amd64 7-STABLE with ZFS, Samba 3.2 and possibly ACLs?
Hi,
could anyone give recommendations (or share experience) regarding
using ZFS:
- FreeBSD 7-Stable (amd64 with 8GB RAM)
+ special tuning necessary (apart from increasing kernel memory
to 1 or more GB for ZFS)
- Samba 3.2
+ ACLs possible directly under ZFS?
+ recommended compile options?
- NFS
- email (imap)
- jails (I have seen some problems exist with using snaphots within
2008 Apr 09
3
[SO]HO Software RAID5 server: which implementation should I choice?
Hello, freebsd-stable.
Does somebody use some software RAID5 on FreeBSD in real production
system?
I want to build storage server for my home: RAW photos, multi-layer
PhotoShop files and FLAC-encoded music consume a lot of space, and
they should be availible both from desktop & notebook.
Also, all photo-content is unique, so I need some insuranse from
single HDD crash. I understand,