Add some basic debug output for log compression

[fio.git] / iolog.c

diff --git a/iolog.c b/iolog.c
index 79c189b70af83e1e5d452ab08b1bff291222709a..100b5d79eb14001cdbdddda7cc17c337765f0b52 100644 (file)
--- a/iolog.c
+++ b/iolog.c
@@ -735,6 +735,11 @@ static void finish_chunk(z_stream *stream, FILE *f,
 static size_t inflate_chunk(struct iolog_compress *ic, int gz_hdr, FILE *f,
                            z_stream *stream, struct inflate_chunk_iter *iter)
 {
+       size_t ret;
+
+       dprint(FD_COMPRESS, "inflate chunk size=%lu, seq=%u",
+                               (unsigned long) ic->len, ic->seq);
+
        if (ic->seq != iter->seq) {
                if (iter->seq)
                        finish_chunk(stream, f, iter);
@@ -777,7 +782,11 @@ static size_t inflate_chunk(struct iolog_compress *ic, int gz_hdr, FILE *f,
                        break;
        }
 
-       return (void *) stream->next_in - ic->buf;
+       ret = (void *) stream->next_in - ic->buf;
+
+       dprint(FD_COMPRESS, "inflated to size=%lu\n", (unsigned long) ret);
+
+       return ret;
 }
 
 /*
@@ -798,6 +807,9 @@ static int inflate_gz_chunks(struct io_log *log, FILE *f)
                if (log->log_gz_store) {
                        size_t ret;
 
+                       dprint(FD_COMPRESS, "log write chunk size=%lu, "
+                               "seq=%u\n", (unsigned long) ic->len, ic->seq);
+
                        ret = fwrite(ic->buf, ic->len, 1, f);
                        if (ret != 1 || ferror(f)) {
                                iter.err = errno;
@@ -986,6 +998,8 @@ static int gz_work(struct tp_work *work)
        stream.next_in = (void *) data->samples;
        stream.avail_in = data->nr_samples * log_entry_sz(data->log);
 
+       dprint(FD_COMPRESS, "deflate input size=%lu, seq=%u\n",
+                               (unsigned long) stream.avail_in, seq);
        do {
                c = get_new_chunk(seq);
                stream.avail_out = GZ_CHUNK;
@@ -1015,10 +1029,13 @@ static int gz_work(struct tp_work *work)
                        stream.next_out = c->buf;
                        ret = deflate(&stream, Z_FINISH);
                        c->len = GZ_CHUNK - stream.avail_out;
+                       total += c->len;
                        flist_add_tail(&c->list, &list);
                } while (ret != Z_STREAM_END);
        }
 
+       dprint(FD_COMPRESS, "deflated to size=%lu\n", (unsigned long) total);
+
        ret = deflateEnd(&stream);
        if (ret != Z_OK)
                log_err("fio: deflateEnd %d\n", ret);