Q10021903 - Under Centos 6 32-bit Linux 4.4, we get slow write speed.
# dd if=/dev/zero of=/mnt/das.h/testFile bs=100M count=1 oflag=dsync
1+0 records in
1+0 records out
104857600 bytes (105 MB) copied, 20.3667 s, 5.1 MB/s


There seems to be a limitation in the Linux 4.4 kernel (32-bit) which affects disk write speed **if** more than 4GB of RAM is installed. Adding mem=4Gto the kernel boot line increased the disk write speed to 800 MB/s to 1GB/s.

Tags: Centos, Linux
Last update:
2019-03-20 10:38
Author:
Simone
Revision:
1.0
Average rating:0 (0 Votes)

You cannot comment on this entry

Chuck Norris has counted to infinity. Twice.

Records in this category

Tags