From 512499c8cab30684785c6b116abbb7c868ac5be9 Mon Sep 17 00:00:00 2001 From: Denis Vlasenko Date: Sun, 26 Aug 2007 18:23:13 +0000 Subject: ps: fix RSS parsing (rss field in /proc/PID/stat is in pages, not bytes) --- libbb/procps.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) (limited to 'libbb/procps.c') diff --git a/libbb/procps.c b/libbb/procps.c index aa207af6f..8d3aea332 100644 --- a/libbb/procps.c +++ b/libbb/procps.c @@ -95,8 +95,15 @@ static int read_to_buf(const char *filename, void *buf) procps_status_t *alloc_procps_scan(int flags) { + unsigned n = getpagesize(); procps_status_t* sp = xzalloc(sizeof(procps_status_t)); sp->dir = xopendir("/proc"); + while (1) { + n >>= 1; + if (!n) break; + sp->shift_pages_to_bytes++; + } + sp->shift_pages_to_kb = sp->shift_pages_to_bytes - 10; return sp; } @@ -229,8 +236,10 @@ procps_status_t *procps_scan(procps_status_t* sp, int flags) &rss); if (n != 10) break; - sp->vsz = vsz >> 10; /* vsize is in bytes and we want kb */ - sp->rss = rss >> 10; + /* vsz is in bytes and we want kb */ + sp->vsz = vsz >> 10; + /* vsz is in bytes but rss is in *PAGES*! Can you believe that? */ + sp->rss = rss << sp->shift_pages_to_kb; sp->tty_major = (tty >> 8) & 0xfff; sp->tty_minor = (tty & 0xff) | ((tty >> 12) & 0xfff00); #else @@ -250,8 +259,10 @@ procps_status_t *procps_scan(procps_status_t* sp, int flags) cp = skip_fields(cp, 3); /* cutime, cstime, priority */ tasknice = fast_strtoul_10(&cp); cp = skip_fields(cp, 3); /* timeout, it_real_value, start_time */ - sp->vsz = fast_strtoul_10(&cp) >> 10; /* vsize is in bytes and we want kb */ - sp->rss = fast_strtoul_10(&cp) >> 10; + /* vsz is in bytes and we want kb */ + sp->vsz = fast_strtoul_10(&cp) >> 10; + /* vsz is in bytes but rss is in *PAGES*! Can you believe that? */ + sp->rss = fast_strtoul_10(&cp) << sp->shift_pages_to_kb; #endif if (sp->vsz == 0 && sp->state[0] != 'Z') -- cgit v1.2.3