Hi!
> During the testing period of about 5 months I have concluded:
>
> 1) There are 3 identical Fujitsu RX200 S6 test servers which all show the
> same problem, but I also reproduced it on some Sun Fire and Dell server.
>
> 2) The problem happens with both HW RAID (MegaRAID SAS 2108) and when d
Since you mentioned problem does not happen on Windows, what do you use
to emulate the workload (iometer ?)
CrystalDiskMark, HD Tune, ATTO Disk Benchmark
Tested for 2-3 hours, but got stable results. Directly afterwards booted
Live CD with Linux and immediately got poor results.
and did you
Please check whether write cache is enabled in the drive
also check whether NCQ is enabled or not.
About caches please note quote from my e-mail below. Changing NCQ
enabled/disabled had no effect either.
6) It is not a caching issue (controller/disk caches were off during
testing, but even p
Hi,
I have an extremely odd situation when the I/O speed changes for both
SATA and SSD disks every few days or weeks with no apparent reason.
The servers have clean base install with nothing but SSH running and
the test I am doing is the following:
# dd if=/dev/zero of=/dev/sda4 bs=1M count=1024
Hello,
I have an extremely odd situation when the I/O speed changes for both SATA
and SSD disks every few days or weeks with no apparent reason.
The servers have clean base install with nothing but SSH running and the
test I am doing is the following:
# dd if=/dev/zero of=/dev/sda4 bs=1M co
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