AFAIK, the more you run multithreaded apps, the more performance gain you get, isn't it? On which linux apps should one see more imporvement? I guess servers like apache and mysql can gain a lot - relatively - from hyperthreading, for example.
> -----Original Message----- > From: Hetz Ben-Hamo [mailto:hetz@;witch.dyndns.org] > Sent: Sunday, November 10, 2002 1:04 PM > To: Boris Gorelik; Linux-IL mailing list > Subject: Re: I have 2 spare CPU's (maybe not) > > > Congratulations, > > You just bought Intel Hyperthreading processors. Don't expect > any earth breaking performance from this (maximum 20% gain > and even this is very rare).. > > Thanks, > Hetz > > > On Sun, 10 Nov 2002 10:48:50 +0200, Boris Gorelik wrote > > this is a VERY strange problem. My boss have bought a new computer > > with two Xeon CPUs (he loves dual machines, and we don't > comlain about > > it ;) ). Last wednesday I've noticed that the top command > showed 4 CPU's: > > [bgbg]$ top -bn1i | head > > 10:32am up 4 days, 1:03, 7 users, load average: 1.59, > 1.37, 0.84 > > 103 processes: 101 sleeping, 2 running, 0 zombie, 0 stopped > > CPU0 states: 89.0% user, 10.0% system, 0.0% nice, 0.0% idle > > CPU1 states: 0.1% user, 0.0% system, 0.0% nice, 99.0% idle > > CPU2 states: 0.0% user, 0.0% system, 0.0% nice, 100.0% idle > > CPU3 states: 0.0% user, 2.0% system, 0.0% nice, 97.0% idle > > Mem: 513400K av, 442124K used, 71276K free, 0K shrd, > > 20064K buff Swap: 1068240K av, 0K used, 1068240K > free > > 213524K cached > > > > I have even opened the box to verify the number of the CPU's. Does > > anyone know anything about this behaviour? How should I > treat the load > > fugures I get from top? > > > > System: RH7.3, kernel 2.4.18.3smp, top --version: top > (procps version > > 2.0.7) > > > > Have a nice life, > > -- > > Boris Gorelik > > Sun, 10/Nov/2002, 5 Kislev 5763 > > > > ================================================================= > > To unsubscribe, send mail to [EMAIL PROTECTED] with the > > word "unsubscribe" in the message body, e.g., run the command echo > > unsubscribe | mail [EMAIL PROTECTED] > > > > > ================================================================= > To unsubscribe, send mail to [EMAIL PROTECTED] > with the word "unsubscribe" in the message body, e.g., run > the command echo unsubscribe | mail [EMAIL PROTECTED] > > ================================================================To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
