I have a server that is driving me insane. Large file writes (400MB+) causes dirty cache buffers to go through the roof. Total cache buffers are 48,000. Without fail, as soon as dirty cache buffers hit 36,000, CPU utilization hits 100% and within 30 seconds the server hard locks and requires a cold reset.
The specs are as follows:
HP Netserver LH3
2 x 400Mhz Pentium II w/ 512K cache
256MB ECC PC100 SDRAM
4 x 18GB Quantum Atlas HDD
HP RAID Adapter (RAID5)
Intel PRO100 Management Ethernet Adapter
Adaptec 2490UW-SCSI
HP SureStor (Quantum) 20/40GB DLT Tape Backup
Novell NetWare v4.11
About 75 concurrent users.
Reads of all sizes are no problem and seem to put no load whatsoever on the server. The server also handles DHCP. I have tried disabling realtime anti-virus scans to see if it helps, it didn't.
Is the bottleneck at the RAID adapter? Would beefing up the CPUs to Xeons with 1MB+ cache help? Or is my only solution to have users break up their databases? I personally hate the HP servers and would prefer a nice Dell or self built unit. Please help before I commit Servercide.
Windogg
The specs are as follows:
HP Netserver LH3
2 x 400Mhz Pentium II w/ 512K cache
256MB ECC PC100 SDRAM
4 x 18GB Quantum Atlas HDD
HP RAID Adapter (RAID5)
Intel PRO100 Management Ethernet Adapter
Adaptec 2490UW-SCSI
HP SureStor (Quantum) 20/40GB DLT Tape Backup
Novell NetWare v4.11
About 75 concurrent users.
Reads of all sizes are no problem and seem to put no load whatsoever on the server. The server also handles DHCP. I have tried disabling realtime anti-virus scans to see if it helps, it didn't.
Is the bottleneck at the RAID adapter? Would beefing up the CPUs to Xeons with 1MB+ cache help? Or is my only solution to have users break up their databases? I personally hate the HP servers and would prefer a nice Dell or self built unit. Please help before I commit Servercide.
Windogg