1775
1
3
S
yst
em
O
p
er
at
ion and Man
agem
ent
With NTP, when delayed difference between frequencies is less than 0.05%,
the difference will not cause the system time to delay. For example, when an
actual clock frequency of CPU is 3000 MHz and the delayed difference is less
than 3001.5 MHz, NTP adjusts the system time.
If the system time delay is troublesome without NTP, use NTP.
3. To correct the system time when clock frequencies are incorrectly recognized:
The followings show the steps with and without NTP.
With NTP to adjust time
Reboot the system following the steps below:
a. Stop running applications.
b. Reboot the system.
c. Check if the CPU clock frequencies are correctly recognized using step 2
described above after the reboot.
d. Confirm that the system clock is correct.
With NTP to adjust time, the system time is adjusted at the system reboot.
Without NTP to adjust time
Reboot the system following the steps below:
a. Stop running applications.
b. Adjust the time using the following command.
Example: to set time to 15:00 7
th
August, 2009
# date –s “08/07 15:00 2009”
c. Reboot the system.
d. Check if the CPU clock frequencies are correctly recognized using step 2
described above after the reboot.
e. Confirm that the system clock is correct.
System problems by error in detecting
frequency of APIC timer at OS boot
Frequency of the APIC timer may be detected incorrectly at OS boot, which may
cause the following results.
OS hangs up during the boot to fail to boot.
Processing like nanosleep system calls pause execution for a short time, which
lowers the application performance.
Commands for collecting information, such as “sar” and vmstat”, which are
used to measure loading on the system, output incorrect results.
These problems are caused by an error in detecting frequency of the kernel APCI
timer at the OS boot.
When USB Legacy emulation interrupt occurs in frequency detection, the detection
process is delayed. Thus, the frequency may be different from the actual value.
However, since frequency detection is executed at OS boot, this phenomenon
cannot occur during the system operation.
Содержание Compute Blade 2000
Страница 1: ...MK 99BDS2K001 16 Hitachi Compute Blade 2000 User s Guide ...
Страница 42: ...xlii Precautions for Safe Use Rear View of A1 A2 Chassis ...
Страница 43: ...xliii Precautions for Safe Use Rear View of A2 Chassis ...
Страница 44: ...xliv Precautions for Safe Use Server Blade ...
Страница 45: ...xlv Precautions for Safe Use I O Slot Expansion Unit ...
Страница 46: ...xlvi Precautions for Safe Use I O Module ...
Страница 47: ...xlvii Precautions for Safe Use AC Power Input Module ...
Страница 51: ...li How to Use the Manuals This page is intentionally left blank ...
Страница 61: ...10 1 Before Use ...
Страница 64: ...13 2 How to Use the System Equipment Rear view of A1 chassis Rear view of A2 chassis ...
Страница 93: ...42 2 How to Use the System Equipment ...
Страница 123: ...72 3 Connecting the System Equipment and Powering On ...
Страница 252: ...201 5 Server Blade Setup 7 Click Next The following screen appears 8 Click Add to SPAN The following screen appears ...
Страница 266: ...215 5 Server Blade Setup 12 Click Yes The following screen appears 13 Click Next The following screen appears ...
Страница 272: ...221 5 Server Blade Setup 3 Check Del and click Go The following screen appears 4 Click Yes ...
Страница 277: ...226 5 Server Blade Setup 3 Check Make Global HSP 4 Click Go Hotspare is set to the specified hard disk ...
Страница 332: ...281 5 Server Blade Setup 7 Click Next The following screen appears 8 Click Add to SPAN The following screen appears ...
Страница 345: ...294 5 Server Blade Setup 12 Click Next The following screen appears ...
Страница 351: ...300 5 Server Blade Setup 3 Check Delete and click Go The following screen appears 4 Click Yes ...
Страница 368: ...317 5 Server Blade Setup 5 Confirm that Controller BIOS is set to that value 6 Click Home to return to the main menu ...
Страница 426: ...375 5 Server Blade Setup 3 Check Delete and click Go The following screen appears 4 Click Yes ...
Страница 430: ...379 5 Server Blade Setup 3 Click Go Hotspare is set to the specified hard disk ...
Страница 473: ...422 5 Server Blade Setup iSCSI menu On the iSCSI menu you can check iSCSI settings Figure 5 42 iSCSI selection menu ...
Страница 479: ...428 5 Server Blade Setup ...
Страница 717: ...666 6 Management Module Settings Details of a physical partition ...
Страница 722: ...671 6 Management Module Settings Server blade details view ...
Страница 723: ...672 6 Management Module Settings ...
Страница 732: ...681 6 Management Module Settings Management module details view ...
Страница 745: ...694 6 Management Module Settings Optional Physical WWN list view ...
Страница 748: ...697 6 Management Module Settings Optional Physical WWN initialization view ...
Страница 750: ...699 6 Management Module Settings FRU list view Displays FRU information for all installed modules ...
Страница 751: ...700 6 Management Module Settings ...
Страница 752: ...701 6 Management Module Settings Sensor list view Displays sensor information for all installed modules ...
Страница 754: ...703 6 Management Module Settings Power status details view ...
Страница 767: ...716 6 Management Module Settings ...
Страница 768: ...717 6 Management Module Settings ...
Страница 769: ...718 6 Management Module Settings ...
Страница 814: ...763 6 Management Module Settings Power status trend view partition ...
Страница 817: ...766 6 Management Module Settings Access log display view ...
Страница 819: ...768 6 Management Module Settings WWN change log display view ...
Страница 879: ...828 7 Configuring the LAN Switch Module Link aggregation adding editing screen ...
Страница 899: ...848 8 Configuring the 10 Gb DCB Switch Module ...
Страница 919: ...868 10 Configuring the Fibre Channel Switch Module ...
Страница 931: ...880 11 I O Slot Expansion Unit Account setting You can use the console to set accounts For procedures see SO command ...
Страница 1097: ...1046 12 Logical partitioning manager Click Confirm and the OS setting is updated as shown in the following screen ...
Страница 1535: ...1484 12 Logical partitioning manager ...
Страница 1877: ...1826 14 14 When You Need Help ...
Страница 1925: ...16 Glossary ...
Страница 1926: ...Hitachi Compute Blade 2000 User s Guide ...