You're welcome AJ. Sar can be used in real time by typing something like "sar 1 100" (print every second for 100 seconds). Else it prints out the information from its database which it updates every 10 mins by default. This info can be viewed by typing "sar -q" for instance. You can also view historical data with The -f flag. The files are kept in /var/log/sa/sa<date>, ie, sar -q -f /var/log/sa/sa09 (for 09th). Regards, Geofrey Rainey Systems Engineer D. 64 9 916 7178 M. 64 21 563 106 geofrey.rainey@xxxxxxxxxx -----Original Message----- From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of Alexandre Vieira Sent: Wednesday, 11 February 2009 12:13 a.m. To: General Red Hat Linux discussion list Subject: Re: Kernel statistic counters Hi Geofrey, Thanks for the input. I've started using collecting data in real time with system tools such as sar and will process the data with a 2 week sample because there doesn't seem to exist kernel counters resembling solaris kstat ones. Regards, AJ On Sun, Feb 8, 2009 at 6:56 PM, Geofrey Rainey <Geofrey.Rainey@xxxxxxxxxx>wrote: > Try "sar" from the package sysstat. > > > -----Original Message----- > From: redhat-list-bounces@xxxxxxxxxx > [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of Alexandre Vieira > Sent: Friday, 6 February 2009 5:34 a.m. > To: redhat-list@xxxxxxxxxx > Subject: Kernel statistic counters > > Hi list, > > I'm auditing (dimensioning, security, stability, performance, etc) a > platform consisting of 4 RHEL machines and I'm having a hard time > finding some system statistics. > > I'm used to Solaris where you have the kstats counters with basically > everything. > > On linux I see that "ethtool -S ethX" gives me what I need for network > stats. How about history counters on CPU activity, memory activity, > disk activity? > > Imagine I want to see sd0 disk error statistic: > > #kstat sderr:0 > > module: sderr instance: 0 > name: sd0,err class: device_error > crtime 42.406513208 > Device Not Ready 0 > Hard Errors 0 > Illegal Request 0 > Media Error 0 > No Device 0 > Predictive Failure Analysis 0 > Product MAT3073N SUN72G > Recoverable 0 > Revision 0602 > Serial No 0530B093ML > Size 73400057856 > snaptime 59275843.5048492 > Soft Errors 0 > Transport Errors 0 > Vendor FUJITSU > > Or partition 0 (/) from sd0 disk activity: > > #kstat sd:0:sd0,a > module: sd instance: 0 > name: sd0,a class: partition > crtime 42.500566541 > nread 408078787784 > nwritten 770591441920 > rcnt 0 > reads 56436484 > rlastupdate 59275924.4385759 > rlentime 481828.942334242 > rtime 331623.611754405 > snaptime 59275924.4385759 > wcnt 0 > wlastupdate 59275924.4385759 > wlentime 990.922349888 > writes 35321509 > wtime 973.857852654 > > Much appreciated for your time. > > Regards > AJ > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list > ========================================================== > For more information on the Television New Zealand Group, visit us > online at tvnz.co.nz > ========================================================== > CAUTION: This e-mail and any attachment(s) contain information that > is intended to be read only by the named recipient(s). This > information is not to be used or stored by any other person and/or organisation. > > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list > -- Alexandre Vieira - nullpt@xxxxxxxxx -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list ========================================================== For more information on the Television New Zealand Group, visit us online at tvnz.co.nz ========================================================== CAUTION: This e-mail and any attachment(s) contain information that is intended to be read only by the named recipient(s). This information is not to be used or stored by any other person and/or organisation. -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
