PROBE::TCPMIB.CURR(3stap) SNMP Information Tapset PROBE::TCPMIB.CURR(3stap)NAME
probe::tcpmib.CurrEstab - Update the count of open sockets
pointer to the struct sock being acted on
value to be added to the counter (default value of 1)
The packet pointed to by skb is filtered by the function tcpmib_filter_key. If the packet passes the filter is is counted in the global
CurrEstab (equivalent to SNMP's MIB TCP_MIB_CURRESTAB)
SystemTap Tapset Reference June 2014 PROBE::TCPMIB.CURR(3stap)
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PROBE::IOBLOCK_TRACE(3stap) IO Scheduler and block IO Taps PROBE::IOBLOCK_TRACE(3stap)NAME
probe::ioblock_trace.request - Fires just as a generic block I/O request is created for a bio.
name - name of the probe point q - request queue on which this bio was queued. devname - block device name ino - i-node number of the
mapped file bytes_done - number of bytes transferred sector - beginning sector for the entire bio flags - see below BIO_UPTODATE 0 ok after
I/O completion BIO_RW_BLOCK 1 RW_AHEAD set, and read/write would block BIO_EOF 2 out-out-bounds error BIO_SEG_VALID 3 nr_hw_seg valid
BIO_CLONED 4 doesn't own data BIO_BOUNCED 5 bio is a bounce bio BIO_USER_MAPPED 6 contains user pages BIO_EOPNOTSUPP 7 not supported
rw - binary trace for read/write request vcnt - bio vector count which represents number of array element (page, offset, length) which make
up this I/O request idx - offset into the bio vector array phys_segments - number of segments in this bio after physical address coalescing
is performed. size - total size in bytes bdev - target block device bdev_contains - points to the device object which contains the
partition (when bio structure represents a partition) p_start_sect - points to the start sector of the partition structure of the device
The process makes block I/O request
SystemTap Tapset Reference June 2014 PROBE::IOBLOCK_TRACE(3stap)
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