Hello, I change printk.c as #if !defined(CONFIG_LOG_BUF_SHIFT) || (CONFIG_LOG_BUF_SHIFT == 0) #if defined(CONFIG_MULTIQUAD) || defined(CONFIG_IA64) #define LOG_BUF_LEN (65536) #elif defined(CONFIG_ARCH_S390) #define LOG_BUF_LEN (131072) #elif defined(CONFIG_SMP) #define LOG_BUF_LEN (32768) #else #define LOG_BUF_LEN (32768) /* This must be a power of two */ #endif #else /* CONFIG_LOG_BUF_SHIFT */ #define LOG_BUF_LEN (1 << CONFIG_LOG_BUF_SHIFT) #endif But still i am not getting 32kb output instead i am getting 16kb. I have recompiled properly and boot new image. regards, cranium --- anil dahiya <ak_ait@xxxxxxxxx> wrote: > > > Hello anil, > > > But what should be the max val i can > > > assign to LOG_BUF_LEN? I am using RH9 on Pentium > 4 > > > machine. > > > > Whatever. You will get at most LOG_BUF_LEN bytes > out > > of dmesg, so it > > must be larege enough that the messages you are > > interested in fit in. It > > is a static buffer that eats up your memory, so it > > should be reasonably > > small not to eat up too much of it. > > size can be anything but it shld be in power of 2 > but > keep the things in mind as explained by Mr. Jan > Hudec > ---Anil > > > Note: distro and cpu are irrelevant here -- memory > > and kernel version > > are relevant (kernel from RH package is different > > than kernel from > > kernel.org). > > > > > ------------------------------------------------------------------------------- > > Jan 'Bulb' Hudec <bulb@xxxxxx> > > > > > ATTACHMENT part 2 application/pgp-signature > name=signature.asc > > > > > > __________________________________ > Do you Yahoo!? > Yahoo! Mail - Easier than ever with enhanced search. > Learn more. > http://info.mail.yahoo.com/mail_250 > __________________________________ Do you Yahoo!? Yahoo! Mail - 250MB free storage. Do more. Manage less. http://info.mail.yahoo.com/mail_250 -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/