cpu cache explained -->Re 5.0.5 MP system running slowly with 1Gb RAM

There is no linear relationship between size of cache and amount of RAM it can cache. This is a common misconception.



Title  Last Comment
Network Hang  
- negative numbers in a netstat -m - the fact that it prints a negative shows that it's signed, so 2147483647 (2^31 - 1) is the largest number it can represent. -

4GB ram problems sco osr5  
- All releases before SCO 507 have a set of behaviors which, while not strictly related to 4GB, tends to cramp the system's style whenever you really _use_ a lot of RAM. -

serial printer hold open scripts with 'cat'  
- It would be even better if there was an input source which the kernel guaranteed to allow you to open, but which never produced any input. Similar to /dev/null, but it should never return from read(). -

scodb crash dump analyze crash  
- Analyzing a crash when the sysdump created is too big for swap by use of "mem=" bootstring (SCO Unix). -

Why no route to host when it can be pinged?  
- If a system can be pinged, why would it say "no route to host" when I try to telnet to it? Where does that come from? -

gunzip File Size Limit Exceeded (core dumped)  
- The size of an individual file is limited to 2GB in OpenServer. Presumably you mean that the unzipped size is ~5GB and the zipped size is smaller? The amount of data that can flow through a pipe is not limited to 2GB. (But it will still fail if any individual file stored in the tar archive is larger than 2GB.) -

tcp connections pseudo ttys NSTRPAGES -->Re No more than230 TCP connections.  
- You need to run `netconfig`, click on "SCO TCP/IP" below your NIC (not the one below "Loopback driver"). Then go to [Protocol -> Modify protocol configuration] and raise the number of TCP connections. You can also raise the number of pseudo ttys here. These thing scost a bit of memory, but not terribly much. Try setting TCP connections to 1024, pseudo ttys to 512. -

Install SCO Unix on non-default division/partition  
- To install anywhere other than the default division-2-of-active-partition requires hackery that few people know -

vmware and old sco image  
- Old SCO 3.2v4.2 in vmware? Obtaining memory map with 'defbootstr prompt' -

Mouse lost on KVM switch  
- Some motherboards just won't work with some KVM switches at all. That's probably a matter of power levels, but it can be very annoying. -

utmpx wtmpx bcheckrc OSR5  
- utmpx wtmpx bcheckrc OSR5 -

dongle needs parallel at 378 address  
- dongle needs parallel at 378 address -

SCO_OSR5 compiling source why the problems?  
- OSR5 compiling source why the problems? -

Pentium 4 overheating OSR5  
- Pentium 4 overheating OSR5 -

How to copy old xenix diskette  
- How the original disk was created could matter. You can get around part of this problem, but not necesaarily easily. -

SCO_OSR5 5.0.7 gigabit broadcom 570x  
- OSR5 5.0.7 gigabit broadcom 570x -

SCO_OSR5 better nfs performance reducing nbuf buffercache  
- OSR5 better nfs performance reducing nbuf buffercache -

3.2v4.2 boot disks n1 n2 m1  
- 3.2v4.2 boot disks n1 n2 m1 -

sed script echo extra argument -->Re misbehavingsed   2010/08/21 Sathish
- sed script echo extra argument -->Re: misbehavingsed -

 
 











 
 
cpu cache explained -->Re 5.0.5 MP system running slowly with 1Gb RAM  
- Explaining cache design vs. memory amount cached. There is no linear relationship between size of cache and amount of RAM it can cache. This is a common misconception. -

 
 
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