Artem Kuchin <> wrote: > What value of HZ option would you recommend > for a hosting (web) server with a lot of processes > (about 900) and polling off (as decided from previous > discussion polling is useless in > this situation).
In that case, I would recommend not to override the default at all (which is 1000). > What parts of kernel does this option affect? What > depends on it? The value of HZ specifies the minimum timing quantum of the kernel. It affects the granularity of the scheduler and all timing-related functions (nanosleep(2) and others), and the accuracy of dummynet and polling. I'm sure there are more things. Basically, the kernel cannot handle time slices smaller than 1/HZ seconds, for any purpose. Best regards Oliver -- Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M. Handelsregister: Registergericht Muenchen, HRA 74606, Geschäftsfuehrung: secnetix Verwaltungsgesellsch. mbH, Handelsregister: Registergericht Mün- chen, HRB 125758, Geschäftsführer: Maik Bachmann, Olaf Erb, Ralf Gebhart FreeBSD-Dienstleistungen, -Produkte und mehr: http://www.secnetix.de/bsd One Unix to rule them all, One Resolver to find them, One IP to bring them all and in the zone to bind them. _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[EMAIL PROTECTED]"