performance decline after hardware upgrade
by anctop from LinuxQuestions.org on (#4SJYA)
Recently we upgraded the hardware of a Linux system.
Old spec:
Intel S3420GPV mainboard, Intel Xeon X3440 CPU, 2 x 4GB 1333MHz ECC RAM,
3 x 1TB SATA HD
New spec:
Intel S1200SPS mainboard, Intel Xeon E3-1245 CPU, 4 x 16GB 2400MHz ECC RAM,
3 x 1TB SATA HD (from old system)
The system runs Linux kernel 4.14.11 32-bit.
After the hardware upgrade, the system boots up as usual.
No error, warning or failure was found in the "dmesg" listing.
All devices appeared to be working correctly.
During the first hour after booting, the performance remained reasonable.
The load average was about 0.4 (as reported by the "w" command), which was essentially the same as that before upgrade.
However, the longer it ran, the slower it became.
The load average varied between the minimum of 1.3 and the maximum of 5.24 in subsequent hours.
As a benchmark, the command "tar Jxf linux-4.14.11.tar.xz" was executed.
On the old hardware, it was finished in about 1 minute.
On the new hardware, it took 70 minutes to finish.
I cannot think of a reason for such performance decline.
Could someone kindly suggest a solution ?
Old spec:
Intel S3420GPV mainboard, Intel Xeon X3440 CPU, 2 x 4GB 1333MHz ECC RAM,
3 x 1TB SATA HD
New spec:
Intel S1200SPS mainboard, Intel Xeon E3-1245 CPU, 4 x 16GB 2400MHz ECC RAM,
3 x 1TB SATA HD (from old system)
The system runs Linux kernel 4.14.11 32-bit.
After the hardware upgrade, the system boots up as usual.
No error, warning or failure was found in the "dmesg" listing.
All devices appeared to be working correctly.
During the first hour after booting, the performance remained reasonable.
The load average was about 0.4 (as reported by the "w" command), which was essentially the same as that before upgrade.
However, the longer it ran, the slower it became.
The load average varied between the minimum of 1.3 and the maximum of 5.24 in subsequent hours.
As a benchmark, the command "tar Jxf linux-4.14.11.tar.xz" was executed.
On the old hardware, it was finished in about 1 minute.
On the new hardware, it took 70 minutes to finish.
I cannot think of a reason for such performance decline.
Could someone kindly suggest a solution ?